We found this circuit in a 1967 RCA SCR manual. The circuit uses components from the era. The bridge diodes must withstand the current of the controlled load.
In the figure we have a Texas Instruments circuit for TTL interfacing using discrete transistors. The two...
This circuit was found in Radio Electronics magazine from June 1963. The range is small and the...
The project presented in a 2009 documentation is intended for radio amateurs operating in the...