PIR motion detector circuit electronic project


Posted on Feb 6, 2014

The op-amp IC1D shapes the frequency response to amplify those frequencies produced when motion is detected and rejects all others, such as those due to noise or slow temperature changes. When IC1D outputs a voltage higher than 1. 67V, it forces pin 8 and pin 2 of IC1 to go high. A high in with one of these cases causes the output to go low and all


PIR motion detector circuit electronic project
Click here to download the full size of the above Circuit.

ows C9 to discharge through IC1A. The discharging of C9 will pull pin 6 of IC2 low and trigger the sound generator.




Leave Comment

characters left:

New Circuits

.

 


Popular Circuits

AC Motor Speed Control circuit
Push-on-push-off electronic switch
Audio/Video Switcher
simple FSK/AFSK Modulator
Simple Audio Filter Analyzer Circuit
LED
working principles of motor control
Full-Wave Rectifier circuit
How to Measure Analog Distance Sensor
AFSK Modem
The TDA2003 10W Car Radio Audio Amplifier
Four crystal diode switching circuit diagram of the IF filter
Alarm interface circuit
A sequence of opening and closing the outlet circuit
Anti-jamming circuit



Top