Institute Newton C. Braga

Circuit Bench

Two Transistors Schmitt Trigger (CB19895E)
This Schmitt trigger was found in old documentation. The transistors can be of the general-purpose type like...
1 kHz Pass Through Filter (CB19098E)
Capacitors determine the frequency range together with resistors, and these components can be...
Balanced Telephone Transmitter (CB24500E)
This circuit is from Radio Electronics from April 1977. The circuit is for analog lines using...