Institute Newton C. Braga

Circuit Bench

Variable Frequency Reject Filter II (CB19693E)
This circuit is from 80s documentation and makes use of common operational amplifiers. The...
Modulated Siren 4001 (CB15445E)
A modulated (intermittent) siren, using the four gates of integrated circuit 4001 is shown in...
Pulse Generator I (CB18967E)
This circuit produces a pulse train controlled by the output of a logic circuit or a...