13W Amplifier (T486E)

This 5-tube hi-fi amplifier was found in an American publication from 1947; The output is in class B and the circuit uses a source with transformer.

| Clique na imagem para ampliar |

Self-biasing JFET stage (CB25566E)
This circuit was found in Electronics Now magazine and can be applied to any JFET. The circuit has high...
Operational Constant Current Source (CB13407E)
This circuit is from a 1977 National Semiconductor integrated circuits manual. The circuit admits...
Commercial 4-Transistor Radio (CB18321E)
This is a commercial radio circuit for 1967 AM. It was found in Japanese documentation. The...