6VDC Amplifier (T485E)

This drum amplifier was found in an American documentation from 1947. It makes use of a mechanical vibrator to generate high voltage for the tubes.

| Clique na imagem para ampliar |

Transformer Coupled AC Switch (CB25075E)
This triac circuit was found in the October 1987 Radio Electronics magazine. The triac is...
Temperature Sensitive Touch Switch (CB10236E)
This circuit was found in a 1987 edition of the United States' Hands-On Electronics magazine. The...
Precedence Detector (CB24358E)
We found this TTL circuit with the 7400 in the January 1975 Radio Electronics magazine. The power...