12 V Power Supply (CB24505E)

To power small projects, we found this circuit in the Radio Electronics magazine of May 1977. The transistor must be equipped with a heat sink.

| Clique na imagem para ampliar |

Oscillator with tunnel diode (CB8052E)
This circuit was found in a 1967 General Electric documentation. Tunnel diodes can oscillate at very...
TTL Oscillator (CB12678E)
The circuit shown in the figure has basically the same configuration as any TTL oscillator, with...
Magnetic Levitation Circuit (CB23792E)
This levitation circuit keeps a small globe floating in space under the action of a magnetic...