2 kW Control (CB21374E)

This power control was found in a 1968 power circuit manual. The SCRs are according to the power of the controlled load.

| Clique na imagem para ampliar |

110 V Lamp Shift Register (CB14710E)
The circuit shown is from the 1977 GE semiconductor manual. The circuit uses a controlled silicon...
Voice Over Music (CB14852E)
When a voice signal enters this circuit, the volume of the music being played automatically...
Metal Detector (CB18341E)
This interesting circuit was found in a 1967 Japanese documentation. Transistors are types of...