Over-under-voltage-monitor


Posted on May 1, 2012

Any potential from 1 to 15 V can be monitored with this circuit. Two lamps alert any undesirable variation. The voltage differential from lamp tum-on to tum-off is about 0.2 Vat any setting. High and low set points are independent of each other. The SCRs used in the circuit should be the sensitive gate type. R3 must be experimentally determined for the particular series of SCRs used.


Over-under-voltage-monitor
Click here to download the full size of the above Circuit.

This is done by adjusting R3 to the point where the undervoltage lamp turns on when no signal is present at the SCR2 gate. Any 15-V segment can be monitored by putting the zener diode, D1, in series with the positive input lead. The low set-point voltage will then be the zener voltage plus 0.8 V.




Leave Comment

characters left:

New Circuits

.

 


Popular Circuits

usb controlled rgb led
Simple Astable 555 Timer IC Flasher
Stepper Motor Circuits
latest touch alarm system circuit
TDA7541 AM/FM Car Radio Tuner IC With Stereo Decoder And Intelligent Selectivity System
Small TV Transmitter Circuit
R5000 Computer Interface
Simple Two-Transistor Motorcycle Alarm
Press light switch double circuit
KTM03 type of circuit for controlling the triac
Clamp meter circuit
The MAX4108 4109 4308 4309 large capacitive load drive circuit diagram to enlarge



Top