This circuit was featured in the March 1972 issue of Radio Electronics magazine. It adds automatic gain control to turntables by acting directly on the cartridge signal.
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...