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 |

Triac start for AC motor (CB7241E)
This circuit is suggested by General Electric in 1966 documentation. The Triac must match the...
Darlington Push Pull Stage (CB6971E)
This circuit was suggested by Popular Elecronics from the 90's. The circuit has high input...
LED Robot (CB4728E)
This circuit is nothing more than a turn signal for two alternating LEDs that can decorate a robot...