FM Oscillator with Varicap (CB21143E)

Found in an Electronic Design, this circuit is intended to produce signals in the VHF band. The transistor is of special high frequency type.

| Clique na imagem para ampliar |

Gas ignition (CB7075E)
This circuit for igniting gas flames was found in a 1967 Electronic Design. The SCR firing device is a...
Variable Capacitor with Transistors (CB6448E)
We found this circuit in a 1966 US documentation. It simulates a variable capacitor that can vary...
Automatic lamp control (CB6847E)
Found in Radio Electronics, this circuit is intended to activate the lighting system of garages...