Capacitive switch circuit diagram

Posted on Mar 28, 2007

As illustrated, the switch circuit by capacitive oscillator, the integration network, and a comparator circuit relay control circuit. When the body close to the induction metal

Capacitive switch circuit diagram
Click here to download the full size of the above Circuit.

plate, inductive capacitance to ground increases, the composition of the 555 astable multivibrator start-up or change in the oscillation frequency, alternating square wave output of the network after the three points, added to IC2 (LM324) with the phase of the comparator, and the set reference voltage, and outputs a negative pulse jump change, VT1 conduction, K pull, load circuit switched on. Conversely, disconnected. Induction plate size selection, should not be lower than the oscillation frequency of several thousand kHz.

Leave Comment

characters left:

New Circuits



Popular Circuits

Small circuit forms programmable 4- to 20-mA transmitter
Audio Mixer with 2N3819
Sound-Operated Switch
Window Generator
87C51 Selling Leads
Radiation Sensor Circuit
Simple Circuit Interfaces 1-Wire Temperature Sensor To A Microcontroller
honda motorcycle cb750f ciruit diagram
Ultra-Simple Microphone Preamplifier
I2C Bus I2C Interface description
Hard Disk Switch
Simple dimming lights circuit diagram
Consumers spark a resistor-capacitor circuit