Electric Voltage Comparator Circuit Diagram

This is simple Electric Voltage Comparator Circuit Diagram. An op amp is used as a comparator and a sink for LED current.

 Electric Voltage Comparator Circuit Diagram

Electric Voltage Comparator Circuit Diagram

 The output voltage of the amplifier changes about 1.4 V depending on the direction of the current. Only one transistor is on at any time. Maximum LED current is limited to 25 mA by over current protection of the uA741.

If LEDs are not capable of carrying such a current or an alternative op amp is used and an additional resistor R^ is necessary.


Post a Comment

All updates in Your Inbox

Enter your email address:

Delivered by FeedBurner



Copyright @ 2013 Electronic Circuit Diagrams & Schematics.

Designed by AS & AS