12V x 1A power supply (CB21851E)

This stabilized power supply was found in the 1974 Ferranti transistor manual. The power transistor must be mounted on a heatsink.

| Clique na imagem para ampliar |

Temperature sensor shield (CB5093E)
This circuit was found in an old publication and can be adapted for use with modern...
Rectangular Oscillator LM2904 (CB15652E)
Rectangular signals up to a few hundred kilohertz can be generated with this circuit, which is...
Lie Detector (CB16354E)
The lie detector we presented was created by a professional detective and found in a 1982...