This wired control circuit serves both volume and balance between channels. We found it in Radio Electronics magazine from August 1968. Transistors are common general-purpose types
This isolated solid state relay can function as a shield directly controlling 10 A loads. The...
This oscillator was found in Radio Electronics from the 90s. C1 and C2 have 2,700 pF and the...
This circuit uses a current regulator from the 90's. This component is uncommon nowadays. The...