Institute Newton C. Braga

Circuit Bench

Comparator With Hysteresis LM324 (CB4004E)
This circuit is from the 1990 Motorola Linear Databook. The circuit can be applied to other...
Recording head amplifier (CB24226E)
The figure shows how to use an operational amplifier with a low impedance head. The gain is...
Polarity Indicator (CB17589E)
This circuit indicates the polarity of a voltage applied to the input. The circuit can make use of...