Using the name of varactor this circuit was found in the Radio Electronics magazine of July 1982. Varicaps of any type can be used and the components selected according to the component.
This variable frequency oscillator (VFO or OFV) was obtained in an old Motorola documentation. The integrated...
This electronic ignition circuit was found in Motorola's Linear Databook of 1990. The components are not...
Found in old documentation, this circuit uses components that are still common on the market. The...