Found in the July 1970 Radio Electronics magazine, this circuit has an adjustable activation time that depends on capacitor C1. The SCR may be a 106 series equivalent.
The circuit presented was obtained from a 1976 Italian Radio Elettronica but can be easily...
Using the well-known CK722 and also the CK721, this signal follower or tracer was found in Radio...
This circuit was found in General Electric documentation from 1964. It makes use of a PUT, called the...