This version is one of many that can be found on our website. We found it in Radio Electronics from the 90s. Transistors support modern equivalents.
This circuit was obtained in a 1980 publication, but it can be easily assembled today, as all...
This circuit recognizes a tone by its frequency triggering a relay. The LC circuit determines the...
This simple SCR trigger was found in a 1965 General Electric SCR manual. The circuit makes use of a...