A circuit for eliminating internal resistance of a toggle switch

Abstract

The utility model relates to the field of circuit technology, and in particular to a circuit for eliminating the internal resistance of a toggle switch, comprising a power supply JP2, a power output terminal, a toggle switch SP2, a transistor QP9, MOS tubes QP8 and QP7, and a plurality of resistors RP17, RP28, RP29, RP30, RP31 and RP32NC. The utility model effectively eliminates the internal resistance of the toggle switch by optimizing the circuit design, improves the stability and efficiency of the circuit, and has broad application prospects. The technical solution is not only applicable to ordinary electronic devices, such as smart wearable devices, but also can play an important role in high-precision and high-stability control systems, communication equipment and other fields, and provide support for technological progress in these fields.

Description

Technical Field

[0001] The utility model relates to the technical field of circuits, in particular to a circuit for eliminating the internal resistance of a toggle switch. Background Art

[0002] Toggle switches are widely used in smart wearable devices. They are used to control various functions of smart wearable devices, such as power on and off, volume adjustment, screen brightness adjustment, mode switching, etc. Toggle switches are usually small and compact in design to adapt to the limited space of smart wearable devices, and they are easy to operate, allowing users to conveniently control the device. Toggle switches play an important role in smart wearable devices, because the overall performance, signal quality and overheat protection of smart wearable devices are directly related to toggle switches, especially the existing toggle switches generally have internal resistance problems, especially in high current application scenarios, the existence of internal resistance causes the switch to heat up, which may damage the switch in severe cases and even cause a fire. At the same time, the internal resistance affects the current transmission efficiency and generates a voltage difference between the two ends of the switch, affecting the accuracy of the voltage. Therefore, eliminating its internal resistance is of great significance for improving device performance, ensuring signal quality, improving user experience and protecting the device. Therefore, in the design of electronic circuits, especially in the circuit technology of smart wearable devices, in order to avoid the existence of internal resistance in the circuit affecting the performance and efficiency of the circuit, it is necessary to fully consider the performance and reliability of the toggle switch, and take appropriate measures to eliminate or minimize its internal resistance. Utility Model Content

[0003] In view of the above problems, the utility model aims to provide a toggle switch internal resistance elimination circuit, which can effectively eliminate the internal resistance of the toggle switch, prevent the switch from heating up, and optimize the current transmission efficiency and voltage accuracy.

[0004] In order to solve the technical problem, the technical solution adopted by the utility model is: a circuit for eliminating the internal resistance of a toggle switch, including a power supply JP2, a power output end, a toggle switch SP2, a transistor QP9, MOS tubes QP8 and QP7, and multiple resistors RP17, RP28, RP29, RP30, RP31 and RP32 NC.

[0005] The power supply JP2 is connected to the gates of the MOS transistors QP7 and QP8 through the resistor RP28 to provide a stable gate voltage.

[0006] The base of the transistor QP9 is connected to the transistor LMBT3904 through the resistor RP29 to control the conduction state of the transistor QP9, thereby controlling the gate voltages of the MOS transistors QP7 and QP8.

[0007] The toggle switch SP2 is used as a power switch and is grounded through resistors RP17 and RP30 to control the on and off of the power supply.

[0008] The resistors RP31 and RP29 are used as base voltage-dividing resistors of the transistor QP9 to stabilize the working point of the transistor QP9.

[0009] The resistors RP30 and RP17 are used as ground terminals of the swing switch to provide a stable grounding environment and reduce noise interference in the circuit.

[0010] The resistor RP32 NC is an optional component, and its presence or absence does not affect the basic function of the circuit and the effect of eliminating the internal resistance of the toggle switch.

[0011] The beneficial effects of the utility model are as follows: the utility model effectively eliminates the internal resistance of the toggle switch by optimizing the circuit design, improves the stability and efficiency of the circuit, and has broad application prospects. The technical solution is not only applicable to ordinary electronic devices, such as smart wearable devices, but also can play an important role in the fields of high-precision and high-stability control systems, communication equipment, etc., and provides support for technological progress in these fields. More specific effects are as follows:

[0012] Firstly, the internal resistance can be effectively eliminated and the circuit efficiency can be improved. The circuit design and component configuration of the utility model can effectively eliminate the internal resistance of the toggle switch, thereby reducing energy loss and improving the overall efficiency of the circuit.

[0013] Secondly, the circuit stability can be enhanced. The elimination of internal resistance means that the circuit can transition more smoothly when switching the toggle switch, reducing voltage fluctuations and noise interference caused by internal resistance, thereby enhancing the stability of the circuit.

[0014] Thirdly, the flexibility of the circuit is improved because the circuit design takes into account the actual application needs, such as the optionality of the resistor RP32NC, which makes the circuit more flexible and can be customized and optimized according to different scenarios.

[0015] Most importantly, the performance and life of the equipment can be effectively improved. Since the circuit reduces the negative impact of internal resistance, the performance of related electronic equipment is improved, while reducing the heat accumulation and component aging caused by internal resistance, thereby extending the service life of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The utility model is a schematic diagram of the internal resistance elimination circuit of the toggle switch. DETAILED DESCRIPTION

[0017] Since the drawings in the specification show in detail the connection mode of each component in the circuit of the utility model, the specific implementation mode of the utility model is described in detail below in conjunction with the drawings in the specification.

[0018] like Figure 1 As shown, a circuit for eliminating the internal resistance of a toggle switch includes a power supply JP2, a power output terminal, a toggle switch SP2, a transistor QP9, MOS tubes QP8 and QP7, and a plurality of resistors RP17, RP28, RP29, RP30, RP31 and RP32. NC; the power supply JP2 is connected to the gates of the MOS tubes QP7 and QP8 through the resistor RP28 to provide a stable gate voltage; the base of the transistor QP9 is connected to the transistor LMBT3904 through the resistor RP29 to control the conduction state of the transistor QP9, thereby controlling the gate voltage of the MOS tubes QP7 and QP8; the toggle switch SP2 is used as a power switch and is grounded through the resistors RP17 and RP30 to control the on and off of the power supply; the resistors RP31 and RP29 are used as the base voltage divider resistors of the transistor QP9 to stabilize the working point of the transistor QP9; the resistors RP30 and RP17 are used as the grounding terminals of the fluctuation switch to provide a stable grounding environment and reduce noise interference in the circuit; it should be particularly noted that in the specific embodiment, the resistor RP32 NC is an optional component, and its presence or absence does not affect the basic function of the circuit and the effect of eliminating the internal resistance of the toggle switch.

[0019] Example: Applying the circuit to smart wearable devices

[0020] This embodiment provides an application of a circuit for eliminating the internal resistance of a toggle switch in a smart wearable device. The circuit is specially designed to improve the power supply stability and efficiency of the device, thereby extending the use time of the wearable device and improving the user experience. A circuit for eliminating the internal resistance of a toggle switch applied to a smart wearable device mainly includes the following components:

[0021] Power supply JP2: provides stable operating voltage for the entire circuit.

[0022] Power output terminal: outputs the processed stable power to other parts of the smart wearable device.

[0023] Toggle switch SP2: As a user-controlled power switch, used to manually control the on and off of the power supply.

[0024] MOS tubes QP7 and QP8: their function is to control the conduction of the power supply.

[0025] Transistor QP9: Its function is to control the voltage on the gate of the other two MOS tubes, thereby controlling whether the MOS tubes can be turned on.

[0026] Resistors RP17, RP28, RP29, RP30, RP31 and RP32 NC: used to adjust the current and voltage in the circuit to ensure stable operation of the circuit.

[0027] Circuit connection and working principle in the embodiment: the power supply JP2 is connected to the gates of the MOS tubes QP7 and QP8 through the resistor RP28. This connection mode ensures that the MOS tubes can obtain stable gate voltages, thereby achieving stable power output; the base of the transistor QP9 is connected to the transistor LMBT3904 through the resistor RP29. This design allows the conduction state of transistor QP9 to be precisely controlled, and then the gate voltage of MOS tubes QP7 and QP8 to be precisely controlled to ensure the stable output of the power supply; the toggle switch SP2 is used as a power switch and is grounded through resistors RP17 and RP30; when the user operates the toggle switch, the power supply can be easily controlled to turn on and off, and the device can be turned on and off; the resistors RP31 and RP29 are used as base voltage divider resistors of transistor QP9, and their existence can stabilize the working point of transistor QP9 and prevent circuit instability caused by voltage fluctuations; the resistors RP30 and RP17 not only serve as the grounding terminal of the toggle switch, but also provide a stable grounding environment for the entire circuit, effectively reducing noise interference in the circuit and improving the stability of the power supply; it should also be noted that the resistor RP32 NC is an optional component, and its existence or not does not affect the basic function of the circuit and the effect of eliminating the internal resistance of the toggle switch. This design makes the circuit more flexible and can be adjusted according to actual needs.

[0028] In smart wearable devices, toggle switches are often used to control sensor readings and device communications. If the internal resistance of the switch is too large, noise or interference may be introduced, resulting in a decrease in signal quality and affecting the accuracy and reliability of the device. At the same time, at the user level, smart wearable devices usually require smooth operation and quick response. If the internal resistance of the toggle switch is too large, it may cause the device to respond slowly or misoperate, affecting the user's experience. In this embodiment, by applying this circuit that eliminates the internal resistance of the toggle switch to the smart wearable device, the power stability and efficiency of the device can be significantly improved, which means that when the user uses the device for a long time, there is no need to charge frequently, and the performance of the device will be more stable and reliable. At the same time, since the elimination of noise interference is considered in the circuit design, the device will be quieter and more stable during operation, improving the user's experience. More importantly, the internal resistance may cause the switch to overheat, which may cause the switch to be damaged or fail in the long run, or even cause more serious equipment failures. The utility model can eliminate the internal resistance to protect the device from damage and extend its service life.

[0029] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A circuit for eliminating the internal resistance of a toggle switch, characterized in that: It includes a power supply JP2, a power output terminal, a toggle switch SP2, a transistor QP9, MOS tubes QP7 and QP8, and a plurality of resistors RP17, RP28, RP29, RP30, RP31 and RP32 NC; wherein, The power supply JP2 is connected to the gates of the MOS tubes QP7 and QP8 through the resistor RP28 to provide a stable gate voltage; The base of transistor QP9 is connected to transistor LMBT3904 through resistor RP29 to control the conduction state of transistor QP9, thereby controlling the gate voltage of MOS transistors QP7 and QP8; The toggle switch SP2 is used as a power switch and is grounded through resistors RP17 and RP30 to control the on and off of the power supply.

2. A circuit for eliminating internal resistance of a toggle switch according to claim 1, characterized in that: The resistors RP31 and RP29 are used as base voltage-dividing resistors of the transistor QP9 to stabilize the working point of the transistor QP9.

3. A circuit for eliminating internal resistance of a toggle switch according to claim 1, characterized in that: The resistors RP30 and RP17 serve as the grounding terminal of the toggle switch SP2.

4. A circuit for eliminating internal resistance of a toggle switch according to any one of claims 1 to 3, characterized in that: The circuit also includes a resistor RP32 NC.

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