Cutting-off type automatic power-on circuit, electronic equipment and automatic power-on method

Abstract

The invention relates to the technical field of electronic equipment startup, in particular to a cut-off type automatic startup circuit, electronic equipment and an automatic startup method. The power supply unit is used for supplying power to the main control unit; the shearing part can cut off the conductive path, the first end of the shearing part is connected to the detection pin of the main control unit, and the second end of the shearing part is connected to the ground; a pull-up unit; the first end of the pull-up unit is connected to the power supply unit, and the second end of the pull-up unit is connected to the first end of the shearing part and the detection pin of the main control unit; wherein the main control unit is configured to monitor the level of the detection pin in real time in a non-working state, and after the main control unit detects that the detection pin is changed from a low level to a high level or from the high level to the low level, the main control unit is switched from the non-working state to the working state. The electronic equipment has the advantages that thorough physical power failure of the electronic equipment is achieved, and ultra-low power consumption is achieved before triggering.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electronic device booting, and in particular to a cut-off type automatic booting circuit, an electronic device and an automatic booting method. BACKGROUND

[0002] Currently, the conventional technical means for realizing electronic device booting mainly include mechanical buttons, capacitive touch switches and software instruction booting. These methods are relatively mature in the field of general consumer electronics, but in some special application scenarios (such as disposable medical detection devices, sealed deployment sensor nodes, long-term storage emergency devices, etc.), they expose many inherent defects that are difficult to overcome, which are specifically as follows:

[0003] 1. Mechanical button switch, mechanical button as a classic booting method, relies on the on-off of physical structure to realize circuit control. However, it has the following significant shortcomings: poor reliability and limited service life: mechanical components have inherent wear and tear and aging problems, repeated pressing can cause contact oxidation or structural fatigue, affecting long-term reliability, and is not suitable for scenarios that require high reliability or one-time use. Impact on device packaging: the button needs to be opened on the shell, which destroys the overall sealing of the device and makes it difficult to achieve high-level dust and water resistance (IP protection), and affects product aesthetics. Space occupation: the button itself and its internal structure need to occupy valuable device space, which is not conducive to the miniaturization and thinness design of the device.

[0004] 2. Capacitive touch switch, capacitive touch switch triggers by detecting capacitance changes, although it does not require physical openings, but has the following problems: easy to trigger accidentally: during transportation, storage or installation, the device is prone to capacitance changes due to vibration, pressure or environmental static interference, resulting in accidental booting. This will continuously consume battery power, causing the device to run out of power before the user actually needs to use it, which is a fatal flaw in storage and transportation. Weak anti-interference ability: in complex electromagnetic environments or humid environments, the working stability may be affected.

[0005] 3. Software instruction booting, booting is controlled by software instructions (such as timed wake-up, remote signal triggering), although it is more flexible, but its fundamental shortcoming is: standby power consumption: in order to be able to respond to booting instructions at any time, the main control chip or part of the circuit of the device must be in a low-power standby state, continuously consuming standby current. For devices that need to be stored for months or even years, this continuous microamp or even milliamp current will slowly drain the battery power, making it impossible to achieve truly "zero power" storage. Unable to cope with complete power-off scenarios: this method requires the power management unit to be powered on at all times, and is not suitable for applications that require physical level complete power-off. SUMMARY

[0006] In order to realize thorough physical power-off of the electronic device, realize ultra-low power consumption before triggering, the application provides a cut-off type automatic start-up circuit, an electronic device and an automatic start-up method.

[0007] The first application purpose is realized by the following technical scheme:

[0008] A cut-off type automatic start-up circuit comprises:

[0009] A master control unit;

[0010] A power supply unit for supplying power to the master control unit;

[0011] A cutting part, which is a cut-off conductive path, has a first end connected to a detection pin of the master control unit and a second end connected to the ground;

[0012] A pull-up unit, which has a first end connected to the power supply unit and a second end connected to the first end of the cutting part and the detection pin of the master control unit;

[0013] The master control unit is configured to monitor the level of the detection pin in real time in a non-working state, and switch from the non-working state to a working state after detecting that the detection pin changes from low level to high level or from high level to low level.

[0014] In a preferred example, the master control unit is further configured to execute preset program instructions after detecting that the detection pin changes from low level to high level or from high level to low level.

[0015] In a preferred example, the preset program instructions comprise any one or more of the following:

[0016] Initializing a system clock, a peripheral unit, sensor data acquisition, and wireless data transmission.

[0017] In a preferred example, the detection pin of the master control unit is a high-level effective enable signal pin.

[0018] In a preferred example, the non-working state is a zero-power consumption sleep state or a power-off state.

[0019] The second application purpose is realized by the following technical scheme:

[0020] An electronic device comprising the cut-off type automatic start-up circuit as described in any one of the above.

[0021] The third application purpose is realized by the following technical scheme:

[0022] An electronic device automatic start-up method of a cut-off type automatic start-up circuit, wherein the cut-off part is in an unbroken state when the electronic device is shipped, a detection pin of a master control unit is forced to be pulled low, and the master control unit is in a non-working state; the method comprises:

[0023] The master control unit monitors the level of the detection pin in real time when in the non-working state;

[0024] After the cut-off part is broken, the level of the detection pin is pulled high by the power supply unit through a pull-up resistor;

[0025] The master control unit switches from the non-working state to the working state after detecting that the detection pin changes from low to high or from high to low.

[0026] In summary, the present application comprises at least one of the following beneficial technical effects:

[0027] 1. When the cut-off part is not cut off, the detection pin is pulled to low, and the master control unit is in the non-working state; when the cut-off part is cut off, the power supply unit pulls the detection pin to high through the pull-up unit, and the master control unit switches from the non-working state to the working state after detecting the high level signal;

[0028] 2. Before the user cuts off, the core circuit of the device should be in a physically disconnected or completely disconnected state, consuming almost no energy. The physical cut-off is ingeniously used to switch the current path, thereby generating an irreversible level jump as a start-up signal to trigger the first start-up, the triggering mode is clear and requires human intention to participate, and any accidental activation during transportation and storage can be completely avoided; no additional mechanical elements, complex circuits or influence on the sealing of the device are needed; the circuit structure is simple, the cost is low, and it is easy to integrate into various PCB designs. BRIEF DESCRIPTION OF DRAWINGS

[0029] Fig. 1 is a schematic diagram of a master control unit chip in an embodiment of the present application;

[0030] Fig. 2 is a schematic diagram of a cut-off type automatic start-up circuit in an embodiment of the present application;

[0031] Fig. 3 is a schematic diagram of a temperature sensing circuit in an embodiment of the present application.

[0032] BRIEF DESCRIPTION OF DRAWINGS: VDDIOP, power supply unit; BT, cut-off part; BUTTON_2, detection pin; R4, pull-up resistor. DETAILED DESCRIPTION

[0033] Exemplary embodiments of the present application are described herein with reference to the accompanying drawings, which are cited by way of example only. The various details of the application are presented in order to provide an understanding of the application, and the application should be considered in its broader aspects and not just the details of the application. Therefore, it will be appreciated that the application can be practiced in a variety of ways, and that the application should be understood to include any combination of the features described herein and / or any features of the prior art. Likewise, the description and drawings should not be construed as limiting the application and should be understood to cover all alternatives, modifications, and equivalents. The following detailed description is provided to provide better understanding of certain embodiments of the application, and is not intended to be limiting.

[0034] It should be noted that the terms "first", "second", and the like, are used herein to distinguish one element from another, and do not necessarily have an ordinal or chronological significance. It is to be understood that the use of such terms is merely for distinguishing between two or more elements or steps of the present disclosure. The terms "first", "second", and the like, are used herein merely to identify one element from another, and do not necessarily have to be used in a chronological manner, unless otherwise specified. The embodiments described in the following examples do not represent all of the embodiments consistent with the present disclosure.

[0035] In addition, the term "and / or", as used herein, merely describes associated objects, and can represent three relationships, for example, A and / or B, which can represent three cases: A exists alone, A and B exist together, and B exists alone. In addition, the character " / " in this paper, unless otherwise specified, generally represents an "or" relationship between the front and rear associated objects.

[0036] In conjunction with Figs. 1 to 3 The automatic start-up circuit includes a main control unit, a power supply unit VDDIOP for supplying power to the main control unit, a cutting part BT, the first end of which is connected to the detection pin of the main control unit, and the second end of which is connected to the ground, and a pull-up unit, the first end of which is connected to the power supply unit, and the second end of which is connected to the first end of the cutting part BT and the detection pin BUTTON_2 of the main control unit. The main control unit is configured to monitor the level of the detection pin BUTTON_2 in real time in a non-working state, and switch from the non-working state to a working state after detecting that the detection pin BUTTON_2 changes from low to high or from high to low. The non-working state is a zero-power sleep state or a power-off state.

[0037] The detection pin of the main control unit is configured as an enable signal pin with high level effective. The internal firmware of the chip continuously or at the moment of power-on detects the level of the pin. When the cutting point BT is not cut, the detection pin BUTTON_2 is forced to be pulled low to ground level (low level) through the cutting point. The main control chip detects the low level and judges that it is in the "disabled" state, so it remains in the shutdown or deep sleep state and does not perform the main function. When the cutting point BT is cut, the short circuit path to the ground is physically cut off. The power supply unit VDDIOP pulls the level of the detection pin BUTTON_2 high (high level) through the pull-up resistor R4. The main control chip detects the high level and judges that it is an "enable" signal, and then triggers the boot process to start the system and perform the scheduled function.

[0038] The main control unit can be a microcontroller (MCU), a system on chip (SoC), an application specific integrated circuit (ASIC), a programmable logic device, a discrete logic circuit, etc. The microcontroller (MCU) internally integrates a central processing unit (CPU), a memory (such as Flash, RAM), and various input / output peripherals. The SoC integrates all the functions of the MCU on a single chip and further integrates special functional units, such as a Bluetooth low energy (BLE) wireless communication module, a Wi-Fi module, a sensor signal processing unit (DSP), etc. The function of the main control unit can be designed as an application specific integrated circuit (ASIC). At this time, the level detection and boot control logic are fixed as hardware circuits, which have extremely high execution efficiency and extremely low power consumption. For example, a simple state machine circuit can be designed, whose output directly controls the enable end of the device power management chip. The main control unit can also be implemented by a programmable logic device, such as a complex programmable logic device (CPLD) or a field programmable gate array (FPGA). The developer can program the level detection and boot control logic in the device by using a hardware description language (such as VHDL or Verilog), which is suitable for scenarios that require rapid prototype verification or complex logic. In an embodiment, the main control unit is designed as a discrete logic circuit. For example, a D flip-flop or a Schmitt trigger can be used to detect the level transition, and its output signal is directly used to control a MOSFET switch to supply power to the subsequent circuit.

[0039] In summary, the core function of the main control unit is to "detect the level state of a specific pin and make a decision on whether to boot or not". As long as the processing unit or logic circuit that can realize this basic function, regardless of its integration level or architecture, should fall within the protection scope of the "main control unit" described in the present application. The detection pin of the main control unit can be configured as high level effective, low level effective, or set to edge triggered interrupt mode. These specific configuration changes are common equivalent substitutions of the present application.

[0040] The power supply unit can be a disposable battery (primary cell), such as an alkaline battery, a lithium-manganese dioxide battery, or a lithium-thionyl chloride battery, which is suitable for devices that need to be used for a long time (e.g., several years) and are used only once, such as medical detection devices, emergency beacons, and the like. It can also be a rechargeable battery (secondary cell), such as a lithium polymer battery, a nickel-hydrogen battery, and the like, which is suitable for devices that need to be used repeatedly but still need to be physically triggered for the first time. The device can be charged through a USB interface or other means in subsequent use.

[0041] The power supply unit can also be an environmental energy harvesting unit, which is suitable for applications such as the Internet of Things and wireless sensor networks. The power supply unit can be an environmental energy harvesting device that converts energy in the environment into electrical energy. A solar cell converts light energy into electrical energy, which is suitable for outdoor or lighted environments.

[0042] The power supply unit can also be a thermal energy harvester that uses temperature difference to generate electricity, which is suitable for scenarios where there is a temperature difference, such as when a device is worn on the human body or when an industrial device is monitored. A vibration energy harvester converts mechanical vibration energy into electrical energy, which is suitable for environments with vibrations, such as industrial equipment and vehicles. A radio frequency energy harvester captures radio wave energy in the environment. In such applications, the device is powered by the energy harvesting unit during storage, but the main system remains powered off through the cut point circuit of the present application, and the main system is activated only after the user cuts the cut point.

[0043] For some non-portable devices, the power supply unit can be designed to obtain power from the outside. That is, the power supply unit is configured as an external power supply adapter; for example, an AC-DC converter: that is, a common "power adapter" that converts mains electricity (e.g., 220V AC) into low-voltage DC power (e.g., 5V DC) required by the device. For example, USB interface power supply: 5V power supply is obtained from a computer, charger or mobile power supply through a Micro-USB, USB-C or other standard interface. For example, a PoE power supply module: receives data signals through a network cable and extracts the DC power contained therein, which is suitable for network devices.

[0044] The power supply unit can also be a combination of the above-mentioned multiple ways to form a hybrid power supply system to improve the reliability and adaptability of the system. For example, "main battery + backup supercapacitor": the supercapacitor provides backup support when the main battery runs out of power or needs a large current instantaneously. "Solar panel + rechargeable battery": the solar panel provides power during the day and charges the battery, and the battery provides power at night or when there is insufficient light. "Environmental energy harvesting + small capacity battery": the energy harvester is the main source of energy, and the small capacity battery is used to maintain the system for a short time when there is no environmental energy or to save data.

[0045] In summary, the core function of the power supply unit is to "provide power for the circuit of the invention". Its specific form can be a direct battery, or a complex system including energy conversion, voltage regulation, management, etc. Any power supply device or circuit combination that can achieve this function shall fall within the protection scope of the "power supply unit" of the invention. The specific selection of the power supply unit should be determined comprehensively according to the application scene, size, cost and service life of the target device, etc.

[0046] The pull-up unit can be a discrete pull-up resistor. The pull-up resistor R4 is a direct embodiment of this embodiment. Its resistance value can be selected according to the system power consumption and speed requirement, for example, between 100kΩ and 10MΩ. The greater the resistance value, the lower the standby power consumption, but the level rising speed may be slower; vice versa.

[0047] In an embodiment, the pull-up resistor R4 is configured inside the master chip, such as an input / output (GPIO) pin integrated with a software-enabled or disabled pull-up resistor. This scheme does not require an external discrete resistor, saving PCB space and material cost, and simplifying circuit layout.

[0048] The pull-up unit is not limited to a fixed resistor: for example, in applications with special requirements for level rising speed, driving capability or level accuracy, the pull-up unit can be composed of active circuits. Embodiment one (constant current source): a simple constant current source circuit is used instead of a resistor. This can provide a more stable pull-up current, which is not affected by power supply voltage fluctuations. Embodiment two (triode or MOSFET switch circuit): a switch tube (such as a triode or MOSFET) controlled by a master or other control signal is used to switch the pull-up path. This can achieve dynamic management of the pull-up function, such as cutting off the pull-up after system startup to save microampere-level power consumption. Any element that can provide a positive current path to the detection pin after the cut-off point is disconnected can be considered as an equivalent "pull-up unit".

[0049] The core function of the pull-up unit is to "provide a deterministic current path to the power supply for the detection pin when the cut-off point is disconnected, thereby pulling up its potential". Whether it is a simple discrete resistor, internal resources of a chip, or a complex active circuit, as long as it achieves this basic function, it shall fall within the protection scope of the "pull-up unit" of the invention. Preferably, a discrete resistor with a fixed resistance value is used to achieve the best cost performance and reliability.

[0050] The shear point BT can have various physical implementations to suit different product requirements, such as making a row of micro-holes on the PCB trace to form a fragile structure similar to the edge of a stamp, along which the user can easily tear off. For example, a "V" or "U" shaped notch is milled at the PCB trace, leaving a long copper foil connection, which the user can cut off or break off with a tool. Also, a pair of pins can be provided on the PCB, which are short-circuited by a conductive jumper cap when shipped. The user can achieve "cutting off" by pulling off the jumper cap. This way is reversible and suitable for scenarios that need to be reset.

[0051] In an embodiment, the master control unit is further configured to execute preset program instructions after detecting that the detection pin (BUTTON_2) changes from low to high or from high to low or from high to low. The preset program instructions include one or more of the following: initializing system clock, peripheral unit, sensor data acquisition, and wireless data transmission. The master control unit is configured to determine that the user triggers the start-up after detecting that the level of the detection pin (BUTTON_2) jumps from low to high, and then start executing the program instructions preset in the internal memory. The preset program instructions are an ordered operation sequence, which aims to smoothly and reliably transition the device from a completely powered-off or deep sleep state to a fully functional working state. The specific content includes but is not limited to the following multiple levels of embodiments:

[0052] 1. System-level initialization instructions (bottom-layer hardware preparation), which are the first batch of instructions executed by the master control unit after wake-up, laying the foundation for the operation of the entire system.

[0053] Generally includes: initializing system clock: starting an internal or external high-speed crystal oscillator (such as a 16MHz crystal oscillator) to provide an accurate clock source for the CPU and peripherals; at the same time, configuring a low-power low-speed clock (such as a 32.768kHz crystal oscillator) to prepare for sleep timing and other functions.

[0054] Initializing the power management unit: configuring the internal voltage regulator, adjusting the core voltage, or providing power to other chip modules through the PMIC (power management integrated circuit) to ensure that each unit of the system obtains stable and reliable energy.

[0055] Initializing the memory: initializing the internal RAM to prepare the data storage space for program execution; it may read configuration parameters or calibration data from non-volatile memory (such as Flash).

[0056] Initializing the watchdog timer: starting the watchdog to improve the anti-interference ability and reliability of the system in complex environments and prevent program runaway.

[0057] 2. Peripheral unit initialization instructions (function module enablement), after the system is ready, the main control unit starts to start its integrated or externally connected various functional peripherals.

[0058] Generally includes:

[0059] Communication interface initialization:

[0060] Initialize the I2C bus to prepare for communication with I2C slave devices such as temperature and humidity sensors.

[0061] Initialize the SPI bus for connecting high-speed peripherals such as flash memory or high-definition displays.

[0062] Initialize the UART serial port for printing debug logs or communicating with wired modules.

[0063] Wireless function start:

[0064] Start the Bluetooth radio unit, load the protocol stack, start broadcasting or try to connect, start the Wi-Fi module, scan and connect to the specified wireless network. Start LoRa, Zigbee or other proprietary wireless communication modules.

[0065] Analog function initialization:

[0066] Enable ADC (Analog-to-Digital Converter) to prepare to collect signals from analog sensors (such as light, pressure, etc.). Enable DAC (Digital-to-Analog Converter) for outputting analog signals.

[0067] 3. Application instructions (core business logic execution), after the main control unit and peripherals are ready.

[0068] Sensor data collection: read sensor data through the initialized interface (such as I2C). For example, read the measurement value of the SHT40 temperature and humidity sensor.

[0069] Data processing and calculation: filter, calibrate, unit convert or more complex algorithm processing (such as FFT analysis, data fusion) on the collected raw data.

[0070] Data storage: write processed data to non-volatile memory (such as Flash) or through the SDIO interface to the SD card for historical records or subsequent analysis.

[0071] Wireless data transmission: send data through the started wireless function. For example, broadcast temperature and humidity data through Bluetooth Low Energy (BLE), or upload to a cloud server through Wi-Fi.

[0072] User interaction: control LED indicator light to flash to show status; drive vibration motor to provide tactile feedback; or drive display screen to display information.

[0073] 4. Communication and network protocol instructions (networking device), for IoT devices, the preset program instructions further include complex network interactions.

[0074] Perform network registration procedures: for example, for cellular IoT devices (such as NB-IoT, 4G Cat.1), perform SIM card authentication and network attachment procedures.

[0075] Handshake authentication with the cloud: Establish a secure connection with a specified cloud service platform (such as the MQTT protocol) and perform device identity authentication.

[0076] Receive and execute cloud instructions: Enter command listening state, respond to instructions from the cloud, such as remote upgrade (OTA), parameter configuration, etc.

[0077] 5. Security and maintenance instructions, which can include:

[0078] Self-checking program: Memory check, sensor self-check, communication link test, etc. at startup to ensure system health and report errors when abnormal.

[0079] Power consumption management: After completing the task, automatically control the peripheral circuit to power off, and control the main control itself to enter a low-power sleep mode, waiting for the next scheduled or external event to wake up, thereby achieving long-term endurance.

[0080] The "preset program instructions" are a full-stack operation set from bottom to top and from hardware to software. Its specific content depends entirely on the final application target of the electronic device. For different products, the preset program instructions can be any combination or subset of the above-mentioned embodiment instructions. Any operation sequence triggered by the cutting action should fall within the protection scope of the "execution of preset program instructions" of the present application.

[0081] The present application also provides an electronic device using the cut-off type automatic start-up circuit of any of the above embodiments.

[0082] According to the embodiments of the present application, the present application also provides an electronic device automatic start-up method, wherein the cutting part (BT) of the electronic device is in an unbroken state when it leaves the factory, the detection pin of the main control unit is forced to be pulled low, and the main control unit is in a non-working state; the method comprises:

[0083] S1, the main control unit monitors the level of the detection pin (BUTTON_2) in real time when it is in a non-working state;

[0084] S2, after the cutting part (BT) is disconnected, the level of the detection pin is pulled high by the power supply unit through the pull-up resistor;

[0085] S3, the master control unit switches from the non-working state to the working state after detecting that the detection pin (BUTTON_2) changes from low level to high level or from high level to low level.

[0086] Thus, before the user cuts off, the device core circuit should be in a physically disconnected or completely powered-off state, consuming almost no energy. Ingeniously use physical cutting to switch the current path, thus generating an irreversible level jump as a boot signal to trigger the first boot, the triggering method is clear and requires human intention to participate, which can completely avoid any accidental activation during transportation and storage; without introducing additional mechanical elements, complex circuits or affecting the sealing of the device; the circuit structure is simple, low in cost and easy to integrate into various PCB designs.

[0087] The specific limitations of the electronic device and the automatic boot method of the electronic device can be referred to the limitations of the cut-off automatic boot circuit described above, which will not be repeated here. Each step of the above-mentioned automatic boot method of the electronic device can be realized by software, hardware and their combinations.

[0088] Various embodiments of the systems and techniques described here can be realized in digital electronic circuitry, integrated circuitry, specially designed ASICs (application specific integrated circuits), computer hardware, firmware, software, and / or combinations thereof. These various embodiments can include implementation in one or more computer programs that are executable and / or interpretable on a programmable system including at least one programmable processor, which can be special or general purpose, coupled to receive data and instructions from, and to transmit data and instructions to, a storage system, at least one input device, and at least one output device.

[0089] These computer programs (also known as programs, software, software applications or code) include machine instructions for a programmable processor, and can be implemented in a high-level procedural and / or object-oriented programming language, and / or in assembly / machine language. As used herein, the terms "machine-readable medium" and "computer-readable medium" refer to any computer program product, apparatus and / or device (e.g., magnetic discs, optical disks, memory, Programmable Logic Devices (PLDs)) used to provide machine instructions and / or data to a programmable processor, including a machine-readable medium that receives machine instructions as a machine-readable signal. The term "machine-readable signal" refers to any signal used to provide machine instructions and / or data to a programmable processor.

[0090] To provide for interaction with a user, the systems and techniques described here can be implemented on a computer having a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to the user and a keyboard and a pointing device (e.g., a mouse or a trackball) by which the user can provide input to the computer. Other kinds of devices can be used to provide for interaction with a user as well; for example, feedback provided to the user can be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user can be received in any form, including acoustic, speech, or tactile input.

[0091] The systems and techniques described here can be implemented in a computing system that includes a back end component (e.g., as a data server), or that includes a middleware component (e.g., an application server), or that includes a front end component (e.g., a user computer having a graphical user interface or a Web browser through which a user can interact with an implementation of the systems and techniques described here), or any combination of such back end, middleware, or front end components. The components of the system can be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include a local area network (LAN), a wide area network (WAN), and the Internet.

[0092] It should be understood that the various forms of flow shown above can be re-ordered, added to, or deleted from without departing from the spirit and scope of the technology disclosed herein. For example, the steps recited in the present application can be executed in parallel, in series, or in a different order, as long as the desired results of the technology disclosed herein are achieved, and the present application is not limited in this regard.

[0093] The specific embodiments described above have been disclosed by way of example and that other embodiments, individually or in combination, are also within the scope of the application. Thus, it is intended that the application protect all changes and modifications to the application as there shown and as there envisioned, by one with average skill in the art to which the application pertains.

Claims

1. An automatic start-up circuit of the cut-off type, characterized in that, The application relates to an automatic start-up circuit with a cut-off function. The application relates to an automatic start-up circuit with a cut-off function. The application relates to an automatic start-up circuit with a cut-off function. The application relates to an automatic start-up circuit with a cut-off function. The application relates to an automatic start-up circuit with a cut-off function. The application relates to an automatic start-up circuit with a cut-off function.

2. The cut-off automatic turn-on circuit according to claim 1, wherein The application relates to an automatic start-up circuit with a cut-off function.

3. The cut-off automatic turn-on circuit according to claim 1, wherein The application relates to an automatic start-up circuit with a cut-off function. The application relates to an automatic start-up circuit with a cut-off function. The application relates to an automatic start-up circuit with a cut-off function.

4. The cut-off automatic turn-on circuit according to claim 1, wherein The application relates to an automatic start-up circuit with a cut-off function.

5. The cut-off automatic turn-on circuit according to claim 1, wherein The application relates to an automatic start-up circuit with a cut-off function. The application relates to an automatic start-up circuit with a cut-off function. The application relates to an automatic start-up circuit with a cut-off function. The application relates to an automatic start-up circuit with a cut-off function. The application relates to an automatic start-up circuit with a cut-off function. The application relates to an automatic start-up circuit with a cut-off function. The application relates to an automatic start-up circuit with a cut-off function. The application relates to an automatic start-up circuit with a cut-off function. The application relates to an automatic start-up circuit with a cut-off function. The application relates to an automatic start-up circuit with a cut-off function. The application relates to an automatic start-up circuit with a cut-off function. The application relates to an automatic start-up circuit with a cut-off function. The application relates to an automatic start-up circuit with a cut-off function. The application relates to an automatic start-up circuit with a cut-off function. The application relates to an automatic start-up circuit with a cut-off function. The application relates to an automatic start-up circuit with a cut-off function. The application relates to an automatic start-up circuit with a cut-off function. The application relates to an automatic start-up circuit with a cut-off function. The application relates to an automatic start-up circuit with a cut-off function. The application relates to an automatic start-up circuit with a cut-off function. The application relates to an automatic start-up circuit with a cut-off function. The application relates to an automatic start-up circuit with a cut-off function. The application relates to an automatic start-up circuit with a cut-off function. The application relates to an automatic start-up circuit with a cut-off function. The application relates to an automatic start-up circuit with a cut-off function. The application relates to an automatic start-up circuit with a cut-off function. The application relates to an automatic start-up circuit with a cut-off function. The application relates to an automatic start-up circuit with a cut-off function. The application relates to an automatic start-up circuit with a cut-off function. The application relates to an automatic start-up circuit with a cut-off function. The application relates to an automatic start-up circuit with a cut-off function. The application relates to an automatic start-up circuit with a cut-off function. The application relates to an automatic start-up circuit with a cut-off function. The application relates to an automatic start-up circuit with a cut-off function. The application relates to an automatic start-up circuit with a cut-off function. The application relates to an automatic start-up circuit with a cut-off function. The application relates to an automatic start-up circuit with a cut-off function. The application relates to an automatic start-up circuit with a cut-off function. The application relates to an automatic start-up circuit with a cut-off function. The application relates to an automatic start-up circuit with a cut-off function. The application relates to an automatic start-up circuit with a cut-off function. The application relates to an automatic start-up circuit with a cut-off function. The application relates to an automatic start-up circuit with a cut-off function. The application relates to an automatic start-up circuit with a cut-off function. The application relates to an automatic start-up circuit with a cut-off function. The application relates to an automatic start-up circuit with a cut-off function. The application relates to an automatic start-up circuit with a cut-off function. The application relates to an automatic start-up circuit with a cut-off function. The application relates to an automatic start-up circuit with a cut-off function. The application relates to an automatic start-up circuit with a cut-off function. The application relates to an automatic start-up circuit with a cut-off function. The application relates to an automatic start-up circuit with a cut-off function. The application relates to an automatic start-up circuit with a cut-off function. The application relates to an automatic start-up circuit with a cut-off function. The application relates to an automatic start-up circuit with a cut-off function. The application relates to an automatic start-up circuit with a cut-off function. The application relates to an automatic start-up circuit with a cut-off function. The application relates to an automatic start-up circuit with a cut-off function. The application relates to an automatic start-up circuit with a cut-off function. The application relates to an automatic start-up circuit with a cut-off function. The application relates to an automatic start-up circuit with a cut-off function. The application relates to an automatic start-up circuit with a cut-off function. The application relates to an automatic start-up circuit with a cut-off function. The application relates to an automatic start-up circuit with a cut-off function. The application relates to an automatic start-up circuit with a cut-off function. The application relates to an automatic start-up circuit with a cut-off function. The application relates to an automatic start-up circuit with a cut-off function. The application relates to an automatic start-up circuit with a cut-off function. The application relates to an automatic start-up circuit with a cut-off function. The application relates to an automatic start-up circuit with a cut-off function. The application relates to an automatic start-up circuit with a cut-off function. The application relates to an automatic start-up circuit with a cut-off function. The application relates to an automatic start-up circuit with a cut-off function. The application relates to an automatic start-up circuit with a cut-off function. The application relates to an automatic start-up circuit with a cut-off function. The application relates to an automatic start-up circuit with a cut-off function. The application relates to an automatic start-up circuit with a cut-off function. The application relates to an automatic start-up circuit with a cut-off function. The application relates to an automatic start-up circuit with a cut-off function. The application relates to an automatic start-up circuit with a cut-off function. The application relates to an automatic start-up circuit with a cut-off function. The application relates to an automatic start-up circuit with a cut-off function. The application relates to an automatic start-up circuit with a cut-off function. The application relates to an automatic start-up circuit with a cut-off function. The application relates to an automatic start-up circuit with a cut-off function. The application relates to an automatic start-up circuit with a cut-off function. The application relates to an automatic start-up circuit with a cut-off function. The application relates to an automatic start-up circuit with a cut-off function. The application relates to an automatic start-up circuit with a cut-off function. The application relates to an automatic start-up circuit with a cut-off function. The application relates to an automatic start-up circuit with a cut-off function. The application relates to an automatic start-up circuit with a cut-off function. The application relates to an automatic start-up circuit with a cut-off function. The application relates to an automatic start-up circuit with a cut-off function. The application relates to an automatic start-up circuit with a cut-off function. The application relates to an automatic start-up circuit with a cut-off function. The application relates to an automatic start-up circuit with a cut-off function. The application relates to an automatic start-up circuit with a cut-off function. The application relates to an automatic start-up circuit with a cut-off function. The application relates to an automatic start-up circuit with a cut-off function. The application relates to an automatic start-up circuit with a cut-off function. The application relates to an automatic start-up circuit with a cut-off function. The application relates to an automatic start-up circuit with a cut-off function. The application relates to an automatic start-up circuit with a cut-off function. The application relates to an automatic start-up circuit with a cut-off function. The application relates to an automatic start-up circuit with a cut-off function. The application relates to an automatic start-up circuit with a cut-off function. The application relates to an automatic start-up circuit with a cut-off function. The application relates to an automatic start-up circuit with a cut-off function. The application relates to an automatic start-up circuit with a cut-off function. The application relates to an automatic start-up circuit with a cut-off function. The application relates to an automatic start-up circuit with a cut-off function. The application relates to an automatic start-up circuit with a cut-off function. The application relates to an automatic start-up circuit with a cut-off function. The application relates to an automatic start-up circuit with a cut-off function. The application relates to an automatic start-up circuit with a cut-off function. The application relates to an automatic start-up circuit with a cut-off function. The application relates to an automatic start-up circuit with a cut-off function. The application relates to an automatic start-up circuit with a cut-off function. The application relates to an automatic start-up circuit with a cut-off function. The application relates to an automatic start-up circuit with a cut-off function. The application relates to an automatic start-up circuit with a cut-off function. The application relates to an automatic start-up circuit with a cut-off function. The application relates to an automatic start-up circuit with a cut-off function. The application relates to an automatic start-up circuit with a cut-off function. The application relates to an automatic start-up

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