Subwoofer Simulator (CB25130E)

This circuit consists of a bass filter that can be used as a subwoofer in a sound system. The circuit is from a Radio Electronics from May 1988.

| Clique na imagem para ampliar |

Traffic light (CB12071E)
We found this automatic traffic light circuit with 6 LEDs in a 1983 publication. The circuit can...
Two Transformers DC to DC inverter (CB14779E)
This circuit of dozens of watts uses germanium transistors and the critical components are...
TTL Counter Modulus (CB895E)
This one-digit TTL modulus for 7-segment display can be parto f digital projects. Many of them can be...