Raystor is a component of the 1960s Raytheon. It consists of a light coupler that allows you to use the circuit as a DC control for signals as shown.
In the figure we have the way to use a single control voltage to act on two varicaps...
This oscillator provides a 1 MHz rectangular signal determined by the capacitors used. The circuit...
This shield circuit with an optical coupler was found in an 90s EDN. The circuit can be used with...