Institute Newton C. Braga

Circuit Bench

Double limit test (CB9593E)
This precision circuit can be implemented with other operational ones. We found it in a...
Rhythmic LEDs (CB12357E)
The circuit shown can be connected in parallel with the speaker of a sound system. Its purpose is to...
2-Transistor Commercial Radio (CB18387E)
We found the circuit for this commercial radio in Japanese documentation from the 1960s. The...