Institute Newton C. Braga

Circuit Bench

Simple FM tuner (CB18577E)
This FM receiver tuning step circuit was found in a 1960 documentation. No information about the...
Supersensitive microammeter (CB22306E)
Found in American documentation, this circuit is more sensitive than the previous one, as it uses...
Notch filter LM3900 (CB15259E)
Other amplifiers of the series like the MC3301, MC3401 and LM2900 can be used in this circuit. We found...