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 |

Digital Voltmeter (CB18145E)
To use the instrument for AC measurement, the tips are A and B. For CC use tips A or B for...
Tuned Colpitts Oscillator (CB25315E)
We found this conventional version of a single-transistor oscillator in the January 1996 issue of...
Regulated Power Supply (CB25641E)
This power supply was found in the December 1993 issue of Electronics Now magazine. Power...