Institute Newton C. Braga

Circuit Bench

Variable Filter (CB6239E)
This filter was found in an 80's English publication. However, it can be implemented with modern...
Single Shot Timer 4001 (CB25744E)
The time of this timer depends on C1. The circuit was found in the July 1994 Electronics Now...
1 W Stereo Mini Amplifier (CB8508E)
Suggested in a 90s European documentation, this amplifier is based on the TEA2025, presenting a...