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.
Found in American documentation, this circuit for modulated infrared signals can be tuned to a...
This is one of the first solid state laser projects. It was found in the June 1972 issue of Radio...
This electronic siren circuit, found in a 1982 documentation, uses three oscillators mounted...