Hughes suggests this circuit in a 1968 documentation. The circuit uses old transistors that can be replaced with equivalents. MOSFET is the critical component of the circuit.
This servo circuit was found in 1969 Motorola documentation. Integrated circuits and transistors are...
This circuit was found in the March 1990 issue of Radio Electronics magazine. The circuit can be...
May 2017 - Mouser Electronics is already stocked with ECS SMD crystals for frequencies in the 16...