Playback Amplifier (14W)

This 7-tube circuit was obtained from an American publication in 1947. The circuit has a push-pull output with a source using a transformer.

| Clique na imagem para ampliar |

Bicolor Sequential (CB16460E)
This circuit was obtained in a 1988 publication, but it can be assembled very easily today, as all...
Digital Christmas (CB16476E)
This simple LED effect is from a 1988 documentation, but it can be easily assembled today, despite...
Alternator Voltage Regulator (CB6331E)
This car alternator voltage regulator was found in a former General Electric publication. It maintains...