Institute Newton C. Braga

Circuit Bench

Water Pump Control (CB18770E)
This circuit uses common components activating a control relay for the water pumps. The sensors are...
DC servo amplifier (CB20793E)
This circuit is from a publication from the 70s. The operational amplifier is from the period. Modern...
10 V Voltage Reference LM121 (CB14252E)
The LM121 integrated circuit is no longer common in our market, with more modern equivalent...