Institute Newton C. Braga

Circuit Bench

DC Motor Control (CB5376E)
This PWM control circuit was found in an old documentation, but appears elsewhere on this site...
Modulator for rectangular signals (CB21630E)
Based on TTL logic this circuit can vary both the frequency and the pulse width of a rectangular signal....
Electronic Cricket (CB12622E)
The critical components of this project from a 1978 publication are the transformers, which can be...