51 results about "Resistance capacitance" patented technology

A signal acquisition system and amplifier for resisting high-frequency interference include a signal terminal; a first filter circuit includes a first access point, a second access point, resistors R1, R2, and R3, and capacitors C1, C2, and C3; one end of resistor R1 is connected to the first access point, and the other end is connected to one end of resistor R2, the other end of resistor R2 is connected to the second access point, the end of resistor R1 connected to resistor R2 is also connected to one end of capacitor C3, and the other end of capacitor C3 is grounded; one end of capacitor C1 is connected to the first access point, and the other end is connected to one end of capacitor C2, the other end of capacitor C2 is connected to the second access point, the end of capacitor C1 connected to capacitor C2 is also connected to one end of resistor R3, and the other end of resistor R3 is grounded; the first filter circuit is connected in series with the first access point and the second access point to the signal terminal. Compared with traditional anti-interference filter structures, this invention can achieve better high-frequency interference resistance with a smaller on-chip cost.

The utility model relates to the technical field of electrical components, and specifically relates to a large current filter, and the auxiliary device comprises a circuit board, a circular magnet, a rotating coil, a fixing block, a resistor and a capacitor. After the rotating coil is wound on the circular magnet, the contact area on the circuit board is connected, and then the appropriate resistor and capacitor are installed, so that the device can be used normally. The device assembles the capacitor, the resistor and the common mode inductance on one circuit board, reduces the space of the filter, reduces the loss, reduces the cost, effectively reduces the manufacturing difficulty by using the modular installation mode, has good practicability and economy, and is beneficial to the promotion and use of the device.

FIELD: electrical engineering.SUBSTANCE: development of pulsed electrical energy converters as a driver for controlling a power transistor. The invention aims to solve is to expand the scope of application of the driver and increase its reliability. Unipolar power supply of the driver is achieved by replacing the comparator with a Darlington transistor circuit, connected to the input through a series resistive-capacitive circuit to the point where the amplified control signal is supplied, and to the common point of the circuit via a resistor and a diode parallel to it. The amplification of the input control pulse is achieved by connecting a field-effect transistor between the control signal supply point, the common point of the circuit, and the terminal of the primary winding of the gate transformer, opposite to the one connected to the power supply point through a current-limiting resistor, which amplifies the input control signal.EFFECT: expansion of the driver's application area in push-pull circuits due to the presence of active locking, simplification of the driver's power supply circuit, and simplification of the control circuits due to the inclusion of an amplifier in the driver.1 cl, 1 dwg

This utility model discloses a touch signal conversion and reading circuit, including an MCU. The PWM signal output terminal of the MCU is connected to the MCU's ADC signal detection terminal via resistor R1, capacitor C1, and resistor R2 in sequence. A touch electrode A1 is also connected between capacitor C1 and resistor R2. The MCU's ADC signal detection terminal is equipped with a signal processing module, which includes a resistor R3 and a capacitor C2 connected in parallel. One end of each resistor R3 and capacitor C2 is connected to the MCU's ADC signal detection terminal, and the other end is connected and grounded. This utility model replaces a dedicated chip with "capacitive coupling waveform distortion detection" and combines a hardware hardening design of "diode reverse protection + voltage divider filtering," reducing hardware costs and improving reliability and compatibility.

The present invention provides a clock signal generator and a frequency trimming method that can trim the clock frequency with high resolution. [Solution] The clock signal generator includes an oscillator circuit and a charge transfer capacitor. The oscillator circuit is configured to generate a clock signal and includes a comparator and a resistor-capacitor (RC) circuit, the RC circuit including a capacitor. The charge transfer capacitor is connected to the RC circuit. The frequency of the clock signal is trimmed by injecting or extracting charge associated with the RC circuit through the charge transfer capacitor.

Disclosed is an H-bridge control circuit for an electro-stimulation therapeutic instrument for neuromodulation. The H-bridge control circuit includes an H-bridge circuit and a constant current source, where the H-bridge circuit includes a first positive channel metal oxide semiconductor (PMOS) transistor, a second PMOS transistor, a first negative channel metal oxide semiconductor (NMOS) transistor and a second NMOS transistor. Corresponding switching diodes are additionally arranged between the first PMOS transistor and a load and between the second PMOS transistor and the load to avoid an influence of safety of the therapeutic instrument by discharging charges during an interval of stimulation; and moreover, a resistance-capacitance (RC) circuit is additionally arranged between the first PMOS transistor, the second PMOS transistor and a control device such that connection and disconnection of the PMOS transistor can be controlled.

The utility model discloses a frequency converter, including the box, be equipped with the heat dissipation air duct in the box, the box is installed along the air flow direction of heat dissipation air duct's resistance, capacitor, radiator and electric reactor are arranged, install drive board on the radiator, integrate IGBT module on drive board, install the lamination female row of connection with drive board on capacitor, be connected with the alternating current input wiring terminal of the box of IGBT module to stretch out, be connected with the alternating current output wiring terminal of the box of lamination female row to stretch out, direct current output terminal and brake output terminal, be equipped with the positioning groove for placing radiator in the box, be equipped with screw perforated part and mounting strip in the box, be equipped with fastening hole on mounting strip, and the fastener is locked on the radiator through fastening hole, be equipped with the filter structure of the air inlet of heat dissipation air duct on the box, install fan subassembly in the box, can steady installation after the hemming structure of radiator size reduction avoids the opening place of the box, and avoid the condition of producing the shake.

This invention discloses an automatic exposure control method suitable for X-ray machines, comprising the following steps: receiving a pulse signal and converting it into a square wave voltage signal; converting the square wave voltage signal into a current signal; and charging a capacitor according to the current signal to obtain a ramp voltage for exposure. According to some preferred embodiments of the invention, the pulse signal is a dose signal fed back from the ionization chamber of the automatic exposure control system. This automatic exposure control method for X-ray machines can be implemented based on basic components such as resistors, capacitors, diodes, and operational amplifiers. It requires simple components, has significant cost advantages, and is a purely analog circuit with fast response speed, low delay, and low power consumption.

This utility model discloses a highly reliable silicon carbide MOSFET half-bridge drive circuit, relating to the field of industrial and automotive drive circuit technology. It includes: an isolation circuit and a dual-channel VGS positive / negative voltage generation circuit. The isolation circuit is electrically connected to the dual-channel VGS positive / negative voltage generation circuit. The isolation circuit includes high-speed optocouplers PHT1 and PHT2. Pin 1 of the high-speed optocoupler PHT1 is electrically connected to resistor R12, capacitor C17, and one end of resistor R1. Pin 3 of the high-speed optocoupler PHT1 is electrically connected to one end of resistor R10. The technical problem this utility model aims to solve is to provide a highly reliable silicon carbide MOSFET half-bridge drive circuit, mainly addressing the issue of adjustable VGS control voltage for silicon carbide MOSFETs. It utilizes discrete components, resulting in a smaller size and better heat dissipation.

The utility model provides a high-power LED light source driving circuit, which comprises a direct-current power supply, an LED driver, a charging control circuit, a current sampling resistor, a capacitor bank and a discharging control circuit, a direct-current power supply is input to the LED driver, and the LED driver is connected with the current sampling resistor and the capacitor bank in series. The capacitor bank is connected with the anode of the LED light source; the charging control circuit comprises a voltage division circuit I and a voltage comparator I, and the voltage division circuit I samples the voltage output by the LED driver; the voltage comparator I is connected with the LED driver; the LED driver judges whether the capacitor bank is charged or not; the discharge control circuit comprises a controller and a switching device, the switching device is connected to the controller, and the controller controls on and off of the switching device; when the switching device is switched on, the capacitor bank releases electricity to the light source, and the light source is turned on; large current is provided for the light source through energy storage of the capacitor bank, smooth starting of the large-power light source is guaranteed, and the problems of power consumption increase and transmission cable heating are avoided.

The application discloses a boost circuit capable of realizing adjustable charging and discharging frequency, comprising a charging and discharging circuit main body, three groups of optional passive RC filter circuits, a secondary passive filter and source follower circuit, a combination logic and differential pulse generation circuit and a negative feedback circuit. The charging and discharging circuit main body comprises two sub-circuits, the three groups of optional filter circuits are combined by switches and resistors and capacitors, and the negative feedback circuit controls the differential pulse signal by a comparator to adjust the charging and discharging. The circuit can realize the switching of three charging and discharging frequencies of 30 MHz, 100 MHz and 400 MHz, is stably boosted to 1.6 V-2.2 V, effectively controls dynamic noise and is suitable for application scenarios of low power supply voltage.

The utility model discloses a kind of low-power single lithium battery boost circuit, including single lithium ion battery V1, resistance R1, capacitor C1, capacitor C2, capacitor C3, capacitor C4, capacitor C5, diode D1, diode D2, diode D3, diode D4, 555 chip U1, the utility model has adopted low-power 555 chip and constitutes minimalistic oscillation circuit, realize the square wave output of 50% duty cycle of micro-power consumption, output square wave is boosted to 9-10V by multistage charge pump, there is no inductive element in circuit, and work in low-frequency state, will not produce electromagnetic interference, it is adopted 555 chip of micro-power consumption, oscillation circuit and charge pump boost circuit are also micro-power consumption, overall power consumption is very small, less than 0.1mA, ensure that battery power consumption is also very small when long time storage, the cost of entire boost circuit is very low, only a few cents, with high cost performance.

Techniques to verify the connectivity between standard cell pins and via ladder structures can include obtaining a mapping of standard cell pins to respective via ladders' characteristics, and determining a sufficient number of connections for connecting a standard cell pin to a corresponding via ladder in an integrated circuit design based on the via ladder characteristics of the standard cell pin. A data structure that models the integrated circuit design as a resistance-capacitance network is used to verify that the standard cell pin has the sufficient number of connections to the corresponding via ladder.

The application relates to the technical field of radio frequency integrated circuits, and discloses a low-noise voltage-controlled oscillator circuit which comprises a source follower low-noise bias circuit with digital calibration, a cross-coupled amplifier array composed of multiple units, a stable DC bias switch capacitor unit array, a wide linear variable capacitor array driven by a ladder bias voltage, and an amplitude self-calibration loop composed of digital logic and a peak detector.

This application provides a pressure detection module, a bionic finger device, and a smart device. The pressure detection device includes a substrate, a capacitance detection module, a resistance detection module, and a pressure detection module. The capacitance detection module includes a detection capacitor, and the resistance detection module includes a detection resistor. The capacitance detection module outputs a first electrical signal under pressure, and the resistance detection module outputs a second electrical signal under pressure. The pressure detection module is electrically connected to both the capacitance detection module and the resistance detection module. Based on the first and second electrical signals, the pressure detection module outputs a pressure signal characterizing the pressure applied to the pressure detection module. The pressure detection module described in this application avoids the limitation of detection scenarios inherent in single pressure detection methods, broadens the detection scenarios of the pressure detection module, and improves the accuracy of pressure detection.

This utility model discloses a relay disconnection delay circuit, belonging to the technical field of new energy vehicle control circuits. The relay disconnection delay circuit includes a first circuit, a second circuit, and a third circuit. The delay circuit is composed of common components such as resistors, capacitors, transistors, and MOSFETs, eliminating the need for dedicated chips to achieve the relay delay disconnection function, thus reducing design costs. Furthermore, the delay time can be controlled based on the values ​​of resistor R6 and capacitor C1.

This invention relates to the field of bioelectrical impedance analysis (BIA) technology, and more particularly to a calibration device and method for a BIA. The technical solution is as follows: A calibration device for a BIA, the device being connected to a BIA host via a communication interface and a calibration port. The device includes: a main control unit for communicating with the host and parsing instructions from the host; a high-speed multiplexer, the control terminal of which is connected to the main control unit, and the output terminal connected to the calibration port; and a standard impedance network composed of multiple high-precision passive components, including resistors, capacitors, inductors, and their series-parallel combinations, wherein each impedance component is connected to a different input channel of the high-speed multiplexer. Through a highly integrated standard impedance network and an automatic switching mechanism, the calibration process is fully automated, completely eliminating human error and greatly improving calibration efficiency and consistency.

The application relates to a liquid crystal display-based circuit for eliminating sharp peak voltage. The liquid crystal display-based circuit for eliminating sharp peak voltage comprises an input module, an absorption module and an output module. The absorption module comprises a resistor R2, a capacitor C2, a switch tube Q1 and a transformer T1. The first end of the resistor R2 is electrically connected with the input module and the first end of the capacitor C2 respectively, the second end of the resistor R2 is electrically connected with the second end of the capacitor C2, the first end of the capacitor C2 is electrically connected with the transformer T1, the first end of the switch tube Q1 is electrically connected with the transformer T1, and the second end of the switch tube Q1 is grounded. The output module is electrically connected with the transformer T1. The scheme provided by the application can eliminate high-frequency interference voltage and sharp peak voltage in input voltage, reduce overvoltage burnout damage to a switch MOS tube, and prolong the service life of a product.

This utility model belongs to the technical field of access control data acquisition circuits, specifically disclosing a data acquisition circuit supporting mixed inputs. It mainly consists of transistor Q27, field-effect transistor Q3, voltage follower U2A, resistors R139, R7, R8, R1, R2, R12, R9, R114, and R83, capacitors RC1, C2, C5, and R15, and a Schottky diode Q1. This utility model has an 8-channel data acquisition circuit, meaning it has 8 inputs on a single terminal device. Each channel supports mixed input measurement of digital quantities, analog current, and analog voltage, significantly reducing the number of field devices and lowering equipment costs. The input signal types can be flexibly configured.

This invention discloses a MEMS inertial device based on a BGA ceramic substrate. Using a BGA ceramic circuit substrate as a carrier, a bare MEMS inertial information processing integrated circuit chip, a bare MEMS inertial sensing structure chip, and several passive devices are integrated in a three-dimensional high-density hybrid manner. The bare MEMS inertial information processing integrated circuit chip and the bare MEMS inertial sensing structure chip are integrated on the upper surface of the BGA ceramic circuit substrate by gold wire bonding, forming a three-dimensional stacked structure. Resistors and capacitors are integrated on the lower surface of the BGA ceramic circuit substrate by reflow soldering. This invention achieves a small-volume, lightweight MEMS inertial device through the three-dimensional stacking integration of bare chips and passive devices.

The present application belongs to the technical field of analog circuit, and particularly relates to a programmable gain amplifier suitable for a high-precision ADC front end. The programmable gain amplifier of the present application adopts a whole differential structure, and comprises a whole differential amplifier. The amplifier completes the function of signal amplification, and has the characteristics of high gain and high linearity. The switches of the network of the switching feedback resistance and capacitance all adopt transmission gate switches, so as to reduce the channel charge injection effect of the switches and the nonlinearity of the on-resistance of the switches. The feedback network of the programmable gain amplifier changes the size of the feedback resistance and capacitance through the transmission gate and the resistance-capacitance combination, so as to realize the control of the gain. The input signal is amplified by the accurate amplification multiple, and meanwhile the size of the feedback resistance and capacitance is impedance-matched, so as to ensure that the-3dB bandwidth of the whole programmable gain amplifier remains basically unchanged, so that the working speed of the programmable gain amplifier under different gain conditions remains consistent, and the linearity is greatly improved.

This invention provides a joint prediction method for state of charge (SOC) and state of power (SOP) of a battery, comprising: collecting voltage, current, temperature, and capacity data of a lithium-ion battery under different operating conditions and temperatures; constructing multi-temperature SOC-open-circuit voltage relationship curves; extracting health features characterizing the degree of battery aging; establishing battery health status characterization quantities; establishing a second-order resistive-capacitive equivalent circuit model of the lithium-ion battery to achieve battery SOC prediction; co-optimizing the FFRLS forgetting factor and MIAUKF key parameters; comprehensively considering temperature constraints, voltage constraints, and SOC constraints in SOP prediction, and coupling the health status characterization quantities into the power prediction process to construct a two-layer network model to achieve high-precision prediction of battery SOP. This invention can effectively improve the accuracy, convergence, and robustness of SOC prediction under complex operating conditions, noise variations, and temperature fluctuations.

Systems, devices, and methods for optimization of conducting interconnects are described. A method includes receiving an integrated circuit layout including a plurality of terminals and an interconnect, wherein the interconnect represents a conductive coupling between the plurality of terminals. The method includes receiving terminal information describing operating parameters of the plurality of terminals. The method includes receiving layer information describing material composition and material property information for the plurality of terminals and the interconnect. The method includes generating a three-dimensional representation of an integrated circuit using the integrated circuit layout and the layer information. The method includes determining an individual contribution of a cell included in the three-dimensional representation to a resistance-capacitance (RC) value of the interconnect using the three-dimensional representation and the terminal information. The method also includes generating an updated integrated circuit layout based at least in part on the individual contribution.

The application relates to a dynamic clock monitoring circuit and belongs to the field of integrated circuit design. The circuit comprises a first part, a second part, a third part for indefinite state setting, and resistance R, capacitor Cc, third NMOS tube N3, Schmidt trigger S1, first inverter INV1, first two-input AND gate AND1, fourth inverter INV4 and fifth inverter INV5; the first part comprises third inverter INV3, second two-input NAND gate NAND2 and first switch S1; the second part comprises first two-input NAND gate NAND1, second inverter INV2 and second switch S2; and the third part 12 comprises two PMOS tubes and two NMOS tubes. The circuit monitors the condition of the system clock through the circuit monitoring system, and outputs two kinds of monitoring signals to provide effective clock monitoring signals for the system.

1. The name of the design product: multimeter (DMT-A100). 2. The use of the design product: for measuring voltage, current, resistance, capacitance and other electrical parameters. 3. The design points of the design product: in the combination of shape and pattern. 4. The picture or photo that best indicates the design points: perspective view 1.

The application discloses a multi-cyclone double-cavity online water content rapid detection system and belongs to the technical field of material water content online detection. The system comprises a bypass sampling and winnowing module and a multi-cyclone parallel collection module. The multi-cyclone parallel collection module and the double-test cavity module are used in cooperation, the multi-cyclone separator cone is collected in parallel and staggered, and double-cavity alternate testing is performed, so that the time waste caused by waiting for discharging in the traditional single-channel method is eliminated, the whole detection process can continuously and uninterruptedly run, near real-time high-frequency water content output is realized on low-cost hardware, the equivalent sampling interval is compressed to sub-second level, fast process control is met, the testing accuracy is ensured, the water content probe is used, the traditional resistance / capacitance probe is adopted, the cost is greatly reduced compared with an infrared / microwave moisture meter, and the water content probe can be quickly replaced.

A clock signal generator includes an oscillation circuit and a charge transfer capacitor. The oscillation circuit is configured to generate a clock signal and includes a comparator and a resistor-capacitor circuit, wherein the resistor-capacitor circuit includes a capacitor. The charge transfer capacitor is connected to the resistor-capacitor circuit. The frequency of the clock signal is adjusted by injecting or extracting charge associated with the resistor-capacitor circuit through the charge transfer capacitor.

The utility model relates to the technical field of inversion units, in particular to an inversion brick for a motor controller of a new energy automobile, which comprises a main body frame, a current sensor, an IGBT (Insulated Gate Bipolar Translator) module, a discharge resistor, a Y capacitor, a direct current support capacitor and a PCBA (Printed Circuit Board Assembly) module, and is characterized in that the main body frame comprises a switch mounting part at the left half part and a capacitor mounting part at the right half part; one side of the switch installation part is also provided with a current sensor, and the IGBT module is installed in the switch installation part. A direct-current supporting capacitor is mounted in the capacitor mounting part, a discharge resistor is mounted on one side of the capacitor mounting part, and a Y capacitor is mounted on the other side of the capacitor mounting part; the PCBA module covers the main body frame and is used for collecting current signals of the current sensor, and PWM signals are obtained through gate-level driving to control the IGBT module to generate current used for driving the motor. The overall structure is a modular brick-shaped structure, the precision of the installation position is higher, and the overall vibration resistance and reliability of the inversion unit are improved.

The utility model provides a kind of oil tank switching valve control circuit with overcurrent, overload protection function, and control circuit includes sliding switch K, resistance R1~R9, capacitor C1~C3, diode D1~D4, triode Q1, Q2, switch tube G1, G2, motor M;Sliding switch K includes static contact piece A, B, C;Motor M is connected electric brush P.The utility model control circuit has overcurrent and short-circuit protection function, if motor M short-circuit fault occurs, then switch tube G1 or G2 will immediately shut down, avoid circuit board burn and power supply line overheating fire.The utility model control circuit has overload protection function, if because of impurity jamming etc. during the conversion of switching valve, the working current of motor M is larger and cannot be completed conversion in certain time, then switch tube G1 or G2 is closed, avoid motor overheating burn.

The utility model provides an eliminate starting noise circuit and sound, wherein eliminate starting noise circuit includes power supply end, and PNP triode Q2 who is connected with power supply end, and load end C who is connected with the collector of PNP triode Q2, and NPN triode Q1 who is connected with the base of PNP triode Q2, and delay circuit module who is connected with the base of NPN triode, and signal control end STANDBY who is connected with delay circuit module, wherein the emitter of PNP triode Q2 is connected with power supply end, and the collector of NPN triode Q1 is connected with PNP triode Q2, and the emitter of NPN triode Q1 is grounded, and delay circuit module is grounded, and delay circuit module is resistance - capacitance delay circuit module, the utility model discloses beneficial effect lies in: utilize delay circuit module to jump over voltage unstable stage, prevents the noise of voltage unstable generation when starting.