We found this circuit with JFETs in a Radio Electronics magazine from June 1969. The circuit has its assembly described in a complete article. Equivalent transistors can be used.
This variable duty cycle circuit was found in the December 1993 issue of Electronics Now magazine. The...
This solid-state relay circuit (SSR) or shield is from a 1995 Electronics Now. With it we can...
This configuration was found in Raytheon's circuit manual from the 1960s. The circuit has an...