Arvin Model 444 (T1083E)

This is a 1946 post-war model radio. The 3-tube receiver has a long-known tube configuration.

| Clique na imagem para ampliar |

Transmitter modulator (CB7492E)
This modulator circuit for AM transmitters was found in a 1960 Sylvania transistor manual. Modern...
Electronic Relay (CB504)
circuit is used to increase the sensivity of a relay. A 50 to 100 mA relay can be triggered with...
Logic Proof (CB21193E)
We find this circuit in an Electronics Now. The indication of the logic level is done on a...