Optical schmitt trigger


Posted on Sep 2, 2012

This circuit shows a 555 with its trigger and threshold inputs connected together used to energize a relay when the light level on a photoconductive cell falls below a preset value


Optical schmitt trigger
Click here to download the full size of the above Circuit.

Circuit can be used in other applications where a high input impedance and low output impedance are required with the minimum component count.




Leave Comment

characters left:

New Circuits

.

 


Popular Circuits

Mic Phantom Supply
10 Mhz fiberoptic receiver
Lighted-display-brightness-control
Light circuit diagram: Electromagnetic Sensor Circuit Using 741 IC
lighting leds
colpitts crystal oscillator circuit
demystifying use of table pointer in
Three transistor audio amplifier
Multiplication circuit in broadband video band used
Voltage-controlled voltage source second order band-pass filter circuit



Top