Capacitance meter circuit diagram design based on LM2917
Source: InternetPublisher:3228 Keywords: Circuit diagram design LM2917 Updated: 2020/01/06
describe
The circuit diagram of a simple capacitor using IC LM2917 is shown in the figure. The LM2917 is a high gain monolithic frequency to voltage converter IC from National Semiconductor. The main application of LM2917 is even in tachometer and it can be used in a variety of such applications. Capacitance values from 0.01uF to 0.1uF can be measured using this circuit. The capacitance to be measured is connected between pin 2 of the IC and ground. The output voltage available through resistor R2 will be proportional to CX, which will be displayed by the meter. Resistor R1 can be used to calibrate the circuit.
Circuit diagram
Precautions
This circuit can be assembled on a VERO board.
Resistor R1 can be used for calibration.
Meter M1 should have a 10V voltmeter at the fire department.
The IC holder must be installed.
- Lightweight and practical multi-core cable detection circuit
- Simple and easy to make zero degree detector
- Multimeter with small capacitor test circuit
- Electromagnetic radiation monitor
- Simple and practical motor short circuit tester
- Design of wireless meter reading system based on DSP
- AC ammeter circuit
- Light Detection 4 to 20mA Current Transmitter Circuit
- DS8 type 100V, 5A mutual inductance three-phase three-wire electric meter wiring
- Differential amplifier circuit
- Three-phase alternating current detection circuit
- Combustible gas detection circuit
- Light detection circuit with current output
- HW200 telephone tester detection circuit
- ADM690~ADM695 constitute a detection circuit (3)
- Hot spot sensor infrared detection circuit
- Human body detection circuit within mechanical action range
- Multi-light sensor Brinell hardness detection circuit
- Direct heating gas-sensitive bridge detection circuit
- Contact combustion type CO detection circuit
京公网安备 11010802033920号