Monostable photocell circuit


Posted on Jul 5, 2012

A photocell circuit provides automatic threshold adjustment. Monostable action prevents undesired retriggering of the output. With only one op amp IC, the circuit offers: Automatic adjustment of its trigger level to accommodate various light sources, changes in ambient light and misalignments; A built-in monostable action to provide only a single output pulse during a preset time; Feedback action to raise the threshold level after triggering and to speed switching.


Monostable photocell circuit
Click here to download the full size of the above Circuit.

The feedback also eliminates the circuit's tendency to oscillate during switching.




Leave Comment

characters left:

New Circuits

.

 


Popular Circuits

12 Volt 30 Amp PSU
50Mhz-vhf-crystal-oscillator
Visible-red-continuous-laser-gun
Op-Amp Based PWM Circuit
2-Line Intercom-Cum-Telephone Line Changeover Circuit
Fastest Finger First Indicator
emergency lamp circuit problem
Blochead Diamond Buffer
RFID Readers for the HDX Protocol
Lantern controller circuit diagram of a two-dimensional



Top