Institute Newton C. Braga

Circuit Bench

Precision High Voltage Regulator (CB5878E)
This circuit is from the LM317's own manual obtained from an old documentation. The IC should be...
Capacitor Tester (CB4391E)
This tester from a 1960 magazine is only for capacitors with insulation voltages above 200 V (110...
TTL PWM (CB13578E)
This circuit generates a PWM control signal using TTL logic. We found this configuration in a 1976...