30results about How to "Simple application circuit" patented technology

The invention discloses an energy saver for an AC contactor, which comprises a half-wave rectification circuit, a square-wave generation circuit, a DC voltage-regulated power supply circuit, a signal converter and a charge / discharge circuit. The half-wave rectification circuit is used for half-wave rectification of mains power, the square-wave generation circuit is used for providing square-wave input for the signal converter, the DC voltage-regulated power supply circuit is used for providing a stable DC power supply for the signal converter, the signal output end of the signal converter is used for providing a control signal for the charge / discharge circuit, and the load of the charge / discharge circuit is an AC contactor. The current of the coil of the AC contactor can be changed through changing the pulse width of the output end of the signal converter, thereby realizing that the high current can flow through the coil of the AC contactor when the contacts of the AC contactor are closed, and the low current can flow through the coil of the AC contactor when the closed state of the contacts of the AC contactor is maintained. Therefore, the invention realizes the energy-saving operation of the AC contactor, reduces the noise and the temperature rise of the coil of the AC contactor, and prolongs the service life of the AC contactor.

The present invention relates to a projecting capacitive touch sensing device, a display panel, and an image display system. The projecting capacitive touch sensing comprises an array of a plurality of sensing units, each sensing unit including: a first electrode made of a sensing material, at least one second electrode made of a sensing material and being disposed around the peripheral of the first electrode, at least one first sensing axis electrically connected to the first electrode, and at least one second sensing axis electrically connected to the second electrodes. The first electrode is quadrangle, while the second electrodes are triangular-shaped. The first electrode and the plurality of second electrodes are arranged to form a rectangular, and a non-sensing area is defined between the first electrode and the second electrodes.

A capacitive touchpad comprises two traces with a plurality of first and second sensors coupled thereto respectively, and the first and second sensors are arranged interlaced and uneven spaced to each other. By detecting the capacitance variances produced by the sensors from the traces, phase leading or lagging Z-axis signals are generated to determine the moving direction of a finger sliding on the capacitive touchpad.

The invention discloses an acceleration card based on CPLD, comprising: a CPLD chip arranged on the acceleration card; One end of the CPLD chip is connected with the BMC chip of the host terminal, andthe other end is connected with each data acquisition device on the acceleration card, which is used for sending the data of each data acquisition device to the BMC chip. Therefore, in this scheme, through the CPLD chip set in the accelerator card to collect the data of each data acquisition equipment, on the basis of the data collection, the acceleration function of the accelerator card is not affected, upgrading and maintenance are facilitated; Moreover, if the CPLD chip is set on the acceleration card, the size of the card, the difficulty of development and the power consumption do not have a great impact on the acceleration card. The invention also discloses an acceleration card data acquisition method and a device, which can also realize the technical effect.

The invention discloses a touch device and a touch method thereof used for providing an input signal to a computer device. The computer device executes an application program according to the input signal. The touch device comprises a touch pad and a processing module. The touch pad is molded along a trace in general. The section area of the touch pad is increased gradually from a first end of the trace to a second end thereof. The processing module is used for providing the input signal to the computer device. When a finger moves on the touch pad, the processing module generates the input signal related to the finger according to the variable quantity of the capacitance value of the touch pad. The invention uses a capacitor type touch pad with the appearance of gradually increased section area as a single trace line to lessen the quantity of the trace line of the prior capacitor type touch pad so as to reduce the cost and simplify the application circuit.

The invention discloses a static magnetic characteristic measuring apparatus, comprising a detection module, a control module and an operation module, wherein the detection module comprises an N-shaped magnet, an excitation coil wound on the magnet and a Hall element placed at one end of the magnet; the control module comprises a programmable logic controller (PLC), an A / D converter, an excitation power supply, a relay and a switching power supply; the PLC is electrically connected with the A / D converter; the coil of the relay is electrically connected with the PLC; the ports of the relay arerespectively electrically connected with the excitation coil and the excitation power supply; the output end of the Hall element is electrically connected with the input end of the A / D converter; thepower supply end of the Hall element is electrically connected with the switching power supply; and the operation module comprises an industrial computer electrically connected with the control module. The measuring apparatus dispenses with demagnetization during measuring, thus realizing continuous measurement of the magnetic characteristic parameters and improving the efficiency of measurement.

The invention provides a microelectronic phase-sensitive receiver. The microelectronic phase-sensitive receiver is simple in structure, can accurately and reliably trigger a relay to work and achieves the abnormity alarm function and the like. According to the microelectronic phase-sensitive receiver, two measurement circuits with an MCU1 and an MCU2 as cores are the same in structure, local voltage and track voltage are connected to A / D input pins of the MCUs through miniature mutual inductors, the MCUs collect two paths of voltage waveforms of a period, the initial phase angles and the effective values of the two paths of signals are calculated through a Fourier transform algorithm, a phase difference is solved, logic judgment is carried out, square signals are output when the condition is met, amplification, isolation transmission and rectification filter are carried out on the square signals, and the square signals wait for selection and output. An MCU3 collects and calculates four paths of voltage, a result is compared with a processing result of the MCU1 and a processing result of the MCU2 respectively, whether the voltage is normal or not is judged, one path of voltage is selected according to a set strategy, an output voltage amphenol connector outputs direct current voltage to enable a 1700 relay to work, and an alarm signal is given out if necessary.

The invention discloses a pneumatic control valve and a gas-liquid pressure conversion control device. The gas-liquid pressure conversion control device drives two oil cylinders to alternately act through one air cylinder and implements oil suction and oil outlet simultaneously. The gas-liquid pressure conversion control device controls air intake through the pneumatic control valve to push a piston rod to move and controls the oil cylinders to output oil alternately to provide pressure. The oil outlet pressure of a hydraulic cylinder composed of the oil cylinders is controlled through the pneumatic control valve to regulate the air intake pressure. A hydraulic energy accumulator buffers pressure pulsation, caused discontinuous oil supply occurring at the reversing moment of the air cylinder, of the gas-liquid boosting control device. Moving components such as a piston of the gas-liquid pressure conversion control device are made of aluminum alloy materials. The weight of reciprocating motion components is reduced as far as possible while the strength is ensured, the reversing sensitivity is improved, and energy consumption and pressure pulsation are both reduced.

A capacitive touchpad comprises two traces with a plurality of first and second sensors coupled thereto respectively, and the first and second sensors are arranged interlaced and uneven spaced to each other. By detecting the capacitance variances produced by the sensors from the traces, phase leading or lagging Z-axis signals are generated to determine the moving direction of a finger sliding on the capacitive touchpad.

The invention relates to a constant current and constant voltage control circuit based on a sampling resistor in a chip. By arranging a routing resistor or a Poly resistor which can be formed in the chip as a sampling resistor, peripheral elements of the IC can be reduced, for example, the external sampling resistor of the IC is not needed, the precision of output current can be improved or stabilized, and the cost saving and efficiency improvement are facilitated. The constant current and constant voltage control circuit comprises a chip packaging body which is provided with a switch control pin, the outer side of the switch control pin is connected with one end of an inductor, the other end of the inductor is a constant current output end, and the sampling resistor in the chip is arranged between the other end of the inductor and the output voltage node of a dual-power tube.

The invention is applicable in the field of integrated circuits, and provides a cycle control white light-emitting diode (WLED) driving chip and a driving method. The cycle control WLED driving chip comprises six package pins including a state control pin, an input pin, a boost control pin, an output pin, a feedback pin and a grounding pin, a logic control unit used for performing logic judgment on state control signals and outputting corresponding logic state signals, and a boosting unit used for generating boost control signals according to the logic state signals and outputting boost direct current voltage which enables a WLED to realize corresponding state changes. The cycle control WLED driving chip adopts the logic control unit and the boosting unit to replace a logic control chip and a boost chip, integrates the two chips into an independent chip, deletes repeated reference units, reduces the package area of the driving chip, optimizes a package process, reduces the manufacturing cost, and simplifies application circuits of the driving chip.

The invention provides a clamping circuit which is integrated inside a low-voltage MCU chip. The clamping circuit comprises a low-voltage NMOS pipe and a low-voltage PMOS pipe. A source electrode of the low-voltage NMOS pipe is connected with a low-voltage power source in the chip, and a substrate of the low-voltage NMOS pipe is connected with ground. A source electrode of the low-voltage PMOS pipe is connected with the ground, a substrate of the low-voltage PMOS pipe is connected with the low-voltage power source, and a drain electrode of the low-voltage PMOS pipe is connected with a drain electrode of the low-voltage NMOS pipe. A voltage leading-out point is formed on the connecting point of the drain electrode of the low-voltage PMOS pipe and the drain electrode of the low-voltage NMOS pipe, and the voltage leading-out point is connected with a high-voltage alternating-current level outside the chip. According to the clamping circuit, high-voltage alternating current signals which are excessive in amplitude are clamped within the largest withstand-voltage range which the low-voltage MCU chip can bear, and therefore an over-zero comparison function is integrated in a CMOS low-voltage technology, external elements are reduced, and cost is lowered.

The invention discloses an analog-digital converter. The analog-digital converter comprises a hardware adder and a proportional amplifier; the hardware adder comprises two DAC chips; a digital signalis converted into a current signal through the DAC chips, the current signal is introduced to be externally connected with a linear operational amplifier and then is converted into a corresponding analog voltage signal, and the analog voltage signal is converted into a voltage required for actual control after passing through the proportional amplifier; and the proportional amplifier is used for carrying out proportional amplification on the voltage generated by the hardware adder to achieve the voltage required for actual control. The analog-digital converter has the following beneficial effects: 1, the system noise is reduced to a certain extent, the effective digit number of measurement is increased, and the effective digit number of the DAC is increased to 32 bits in reality; and 2, the new 32-bit high-resolution DAC is relatively easy in the wiring aspect of a PCB.

The invention provides an integrated chip for detecting human body oxyhemoglobin saturation. The integrated chip comprises a red light diode driving circuit, a red light photoelectric transducer, a first current-voltage conversion circuit, an infrared light diode driving circuit, an infrared light photoelectric transducer, a second current-voltage conversion circuit, an analog-digital conversion circuit and a digital signal processing circuit. The red light diode driving circuit is connected with a red light diode. The output end of the red light photoelectric transducer is connected with the first current-voltage conversion circuit. The output end of the first current-voltage conversion circuit is connected with the analog-digital conversion circuit. The infrared light diode driving circuit is connected with an infrared light diode. The output end of the infrared light photoelectric transducer is connected with the second current-voltage conversion circuit. The integrated chip has the advantages that an application circuit is simplified, the equipment for measuring human body oxyhemoglobin saturation is greatly miniaturized, and the cost is reduced.

The invention discloses a flammable gas detection system based on NB-IOT Internet of Things, which comprises a CPU module, a communication module, a SIM card module, a power module, a combustible gasdetection module, a clock module, a communication module, and a flammable gas detection module. The clock module is connected to the CPU module, and the communication module is connected to the SIM card module. The power module supplies power to each module. The invention has the following advantages: having a gas intelligent alarm system based on the Internet of Things; the trinity of an indoor gas detection system, a small-scale gas information convergence point and a server fully conforms to the current concept of intelligent integration in the field of science and technology, and is suitable for most residential buildings. The design is closely integrated with the knowledge of the Internet of Things based on the concept of providing protection for people lives and property, which has the characteristics of low cost, no pollution, high versatility and high security.

An air-liquid pressure conversion control device. The device uses a combination of a large-diameter air cylinder and a small-diameter hydraulic cylinder, and drives a piston of the hydraulic cylinder to reciprocate by utilizing the push-pull reciprocating movement of the air cylinder, so as to complete oil suction and oil output functions of the device. A pneumatic control valve (10) is further disclosed. Air intake is controlled by the pneumatic control valve and then a piston rod (8) is pushed to move, oil cylinders are controlled to output oil alternately to provide pressure, and the oil output pressure of a hydraulic system composed of the oil cylinders is controlled by regulating an air intake pressure by the pneumatic control valve. A hydraulic energy accumulator buffers pressure pulsation, caused by discontinuous oil supply occurring at the reversing moment of the air cylinder, of the air-liquid pressure conversion control device. Moving components such as the piston of the device are made of aluminum alloy materials. The weight of reciprocating movement components is reduced as much as possible while the strength is ensured, the reversing sensitivity is improved, and the pressure pulsation is also reduced while the energy consumption of reversing is reduced.

The invention relates to a constant current and constant voltage control circuit based on a sampling resistor in a chip. By arranging a routing resistor or a Poly resistor which can be formed in the chip as a sampling resistor, peripheral elements of the IC can be reduced, for example, the external sampling resistor of the IC is not needed, the precision of output current can be improved or stabilized, and the cost saving and efficiency improvement are facilitated. The constant current and constant voltage control circuit comprises a chip packaging body which is provided with a switch control pin, the outer side of the switch control pin is connected with one end of an inductor, the other end of the inductor is a constant current output end, and the sampling resistor in the chip is arranged between the other end of the inductor and the output voltage node of a dual-power tube.

The present invention relates to a method for setting the working mode of a chip, which includes the following steps: Step S1, which is realized in any of the following ways: (1) A resistor is connected to a constant voltage source or ground on the setting pin of the chip, and Connect an external capacitor to the ground or to the constant voltage source; (2) Connect a resistor to the constant voltage source or to the ground on the setting pin of the chip, and a built-in capacitor to the ground or to the constant voltage source; (3) Connect to the chip’s setting pin Set an external capacitor to the ground or to a constant voltage source on the setting pin, and a built-in resistor to the constant voltage source or to the ground; (4) Connect a capacitor to the ground or to the constant voltage source on the setting pin of the chip, and a built-in The constant current source charges or discharges the capacitor; step S2, detects and obtains the corresponding working mode code according to the rising rate or falling rate of the voltage of the capacitor, so as to determine the working mode corresponding to the working mode code. The invention saves the total number of pins of the chip, reduces the cost, improves the integration degree of the chip, and simplifies the application circuit.

The invention discloses a static magnetic characteristic measuring apparatus, comprising a detection module, a control module and an operation module, wherein the detection module comprises an N-shaped magnet, an excitation coil wound on the magnet and a Hall element placed at one end of the magnet; the control module comprises a programmable logic controller (PLC), an A / D converter, an excitation power supply, a relay and a switching power supply; the PLC is electrically connected with the A / D converter; the coil of the relay is electrically connected with the PLC; the ports of the relay arerespectively electrically connected with the excitation coil and the excitation power supply; the output end of the Hall element is electrically connected with the input end of the A / D converter; thepower supply end of the Hall element is electrically connected with the switching power supply; and the operation module comprises an industrial computer electrically connected with the control module. The measuring apparatus dispenses with demagnetization during measuring, thus realizing continuous measurement of the magnetic characteristic parameters and improving the efficiency of measurement.

The invention provides a microelectronic phase-sensitive receiver, which has a simple structure, can accurately and reliably trigger a relay to work, and realize functions such as an abnormal alarm. In this microelectronic phase-sensitive receiver, the two sets of measurement circuits with MCU1 and MCU2 as the core have the same structure. The local voltage and track voltage are connected to the A / D input pin of the MCU through a micro-transformer, and the MCU collects two voltage waveforms in one cycle. , Calculate the initial phase angle and effective value of the two signals through the Fourier transform algorithm, find the phase difference, and make a logical judgment. When the conditions are met, output a square wave signal, which is amplified, isolated and transmitted, rectified and filtered, and output to be selected . MCU3 collects and calculates all four voltages, compares the results with the processing results of MCU1 and MCU2 to judge whether it is normal, selects one of them according to the set strategy, and outputs DC voltage through the output voltage terminal to make the 1700 relay work, if necessary Send an alarm signal.

The invention relates to the technical field of electronic engineering, in particular to a PDP power integration module and a method for manufacturing the same; the PDP power integration module is characterized in that a copper-clad layer of a ceramic substrate is provided with a signal lead pin, a power lead pin and a power control circuit, which are welded and fixed by soldering tin; the power control circuit consists of two IGBT power topological circuits; one of the power topological circuits consists of two IGBT semi-bridge circuits with unconnected C electrodes and E electrodes and is driven by a high-pressure drive IG; the E electrode of the upper arm IGBT and the C electrode of the lower arm IGBT are connected in series with an FRD respectively; the other power topological circuitconsists of two IGBT standard semi-bridge circuits with connected C electrodes and E electrodes and is driven by another high-pressure drive IC; the upper arm IGBT and the lower arm IGBT consist of two chips connected in parallel respectively; each IGBT is connected in parallel with a subsequent flow FRD; and the PDP power integration module has the advantages of simple operation, timely information feedback and the like.

The invention is applicable in the field of integrated circuits, and provides a cycle control white light-emitting diode (WLED) driving chip and a driving method. The cycle control WLED driving chip comprises six package pins including a state control pin, an input pin, a boost control pin, an output pin, a feedback pin and a grounding pin, a logic control unit used for performing logic judgment on state control signals and outputting corresponding logic state signals, and a boosting unit used for generating boost control signals according to the logic state signals and outputting boost direct current voltage which enables a WLED to realize corresponding state changes. The cycle control WLED driving chip adopts the logic control unit and the boosting unit to replace a logic control chip and a boost chip, integrates the two chips into an independent chip, deletes repeated reference units, reduces the package area of the driving chip, optimizes a package process, reduces the manufacturing cost, and simplifies application circuits of the driving chip.

The invention relates to a clock driving method for the single-ended input differential output of ATE testing. According to the method, a differential amplifier THS4503 and peripheral circuits thereof are adopted to convert single-ended digital signals generated by a MicroFLEX into differential digital signals required by an AD6645. The method includes the following steps that: the gain and bandwidth of a required differential amplifier are determined according to the amplitude range and bandwidth of single-ended digital signals generated by ATE; step 2, the values of feedback resistance and gain resistance are calculated, if a signal source has impedance, impedance matching is performed; step 3, peripheral circuit design is performed according to the working principle of the differential amplifier; and step 4, signals are generated and controlled through the IG-XL software programming of the MicroFLEX.

The invention discloses a novel methane sensor which comprises a supporting base, an outer protective shell, a metal filter screen, an air inlet hole, a first filter, a double-layer organic filter screen, a second filter, a welding base, shaft bases, a ceramic electrode chip and a lead column, the second filter is arranged at the bottom end of the double-layer organic filter screen, and the welding base is fixedly connected to the top end of the supporting base; four shaft bases are fixedly mounted in the welding base; the methane sensor is simple in structure, the preparation process is simple, the heating resistor of the ceramic electrode plate applied to the methane sensor can be accurately controlled, the working voltage and current of the ceramic electrode plate can be designed and manufactured in batches according to application scene requirements, the ceramic electrode adopts semi-mechanical welding, the welding efficiency is high, the welding cost is low, meanwhile, a rapid standard packaging process is adopted, and the detection part of the sensor is accommodated in a standard TO-5 metal package, so that the sensor is small in size, low in power consumption, high in use sensitivity, long in service life, low in cost and simple in application circuit.

The invention provides a direct current-direct current voltage converter which comprises an inductor, a switch device, a first voltage feedback control circuit, a first rectification branch, at least one second rectification branch and at least one second feedback control circuit. The first voltage feedback control circuit is used for acquiring the output voltage of the first rectification branch output end to the first output end of a first load and using the output voltage as first feedback voltage, and controlling the first switch end and the second switch end of the switch device to switch on and off according to the first feedback voltage. The second feedback control circuit is used for acquiring the output voltage of the second rectification branch output end to the second output end of a second load and using the output voltage as second feedback voltage, and controlling the resistance of a controlled resistance circuit of the second rectification branch according to the second feedback voltage. According to the invention, the output end of each rectification branch is provided with an independent voltage feedback control circuit, so as to ensure the constant voltage performance of the output end of each rectification branch.

The invention provides a clamping circuit which is integrated inside a low-voltage MCU chip. The clamping circuit comprises a low-voltage NMOS pipe and a low-voltage PMOS pipe. A source electrode of the low-voltage NMOS pipe is connected with a low-voltage power source in the chip, and a substrate of the low-voltage NMOS pipe is connected with ground. A source electrode of the low-voltage PMOS pipe is connected with the ground, a substrate of the low-voltage PMOS pipe is connected with the low-voltage power source, and a drain electrode of the low-voltage PMOS pipe is connected with a drain electrode of the low-voltage NMOS pipe. A voltage leading-out point is formed on the connecting point of the drain electrode of the low-voltage PMOS pipe and the drain electrode of the low-voltage NMOS pipe, and the voltage leading-out point is connected with a high-voltage alternating-current level outside the chip. According to the clamping circuit, high-voltage alternating current signals which are excessive in amplitude are clamped within the largest withstand-voltage range which the low-voltage MCU chip can bear, and therefore an over-zero comparison function is integrated in a CMOS low-voltage technology, external elements are reduced, and cost is lowered.

The invention discloses a touch device and a touch method thereof used for providing an input signal to a computer device. The computer device executes an application program according to the input signal. The touch device comprises a touch pad and a processing module. The touch pad is molded along a trace in general. The section area of the touch pad is increased gradually from a first end of the trace to a second end thereof. The processing module is used for providing the input signal to the computer device. When a finger moves on the touch pad, the processing module generates the input signal related to the finger according to the variable quantity of the capacitance value of the touch pad. The invention uses a capacitor type touch pad with the appearance of gradually increased section area as a single trace line to lessen the quantity of the trace line of the prior capacitor type touch pad so as to reduce the cost and simplify the application circuit.

The invention discloses an alarm sound chip, an internal circuit and an application circuit thereof. The chip comprises: a matrix, a mode input pin, a grounding pin and an output pin. The mode input pin, the grounding pin and the output pin are respectively arranged on the matrix and are electrically connected with a corresponding circuit in the matrix. A built-in reset unit, a voltage stabilization unit, a clock unit, an input mode selection unit, a tone control unit, a rhythm control unit, a state control unit, a memory cell, an output logic unit and the like are integrated in the chip. The application circuit comprises: the alarm sound chip, a loudspeaker and an electronic control switch. An alarm trigger signal is input into the mode input pin of the alarm sound chip. The grounding pin of the alarm sound chip is grounding. The output pin of the alarm sound chip makes the loudspeaker sound through the electronic control switch. By using the alarm sound chip, the internal circuit and the application circuit, pin quantities and packaging costs can be substantially reduced. Few periphery components are needed so as to realize alarm. The application circuit is simple and is easy to be realized.

The present invention relates to a projecting capacitive touch sensing device, a display panel, and an image display system. The projecting capacitive touch sensing comprises an array of a plurality of sensing units, each sensing unit including: a first electrode made of a sensing material, at least one second electrode made of a sensing material and being disposed around the peripheral of the first electrode, at least one first sensing axis electrically connected to the first electrode, and at least one second sensing axis electrically connected to the second electrodes. The first electrode is a parallelogram, while the second electrodes are triangular-shaped. The first electrode and the plurality of second electrodes are arranged to form a rectangular, and a non-sensing area is defined between the first electrode and the second electrodes.

The invention discloses an MCU type intelligent PIR sensor signal processing device which comprises an ultrahigh input impedance interface circuit, a Sigma-Delta type ADC, a digital bandpass filter, a microprocessor, an I2C interface circuit, a band gap reference circuit, a high-speed oscillator and a low-speed oscillator. A signal of a PIR sensor is sequentially processed through the ultrahigh input impedance interface circuit, the Sigma-Delta type ADC, the digital bandpass filter and the microprocessor; the microprocessor processes output data of the digital bandpass filter, and advanced filtering and functional control are achieved in a software mode. The I2C interface circuit is connected with and communicated with other peripheral hosts, and intelligent processing and control are achieved. By means of the MCU type intelligent PIR sensor signal processing device, an application circuit can be simplified, systems stability can be improved, and intelligentization and microminiaturization of equipment in the smart home field in the Internet of Things are achieved.