This circuit was found in a documentation of the time. It consists of a receiver with two RF stages for the medium wave band. The audio power is on the order of 2 W.
The critical point in this 2005 project is the adjustment of the optical system, mainly to avoid...
This simple SCR trigger was found in a 1965 General Electric SCR manual. The circuit makes use of a...
We found this circuit in a 1976 technical documentation, but it can be assembled with modern...