Varactor diodes are our varicaps of today. This circuit for switching signals in an RF circuit was found in a Radio Electronics magazine from July 1982.
This circuit was obtained in a Hands-On Electronics from the 90's. The circuit turns on one LED at...
This soft start circuit was found in a 1965 General Electric documentation. The SCR and bridge...
The LM320 is a negative voltage regulator up to 15 V with maximum current of 1 A. In this circuit we...