Adjustable reference (CB21539E)

This circuit was obtained from an old American publication. The uA702 is a differential amplifier and the diode is a zener.

Astable Duty Cycle (CB25655E)
This variable duty cycle circuit was found in the December 1993 issue of Electronics Now magazine. The...
AC Power Switch with Optocoupler (CB12416E)
This solid-state relay circuit (SSR) or shield is from a 1995 Electronics Now. With it we can...
Low Impedance Preamp 2 (CB21895E)
This configuration was found in Raytheon's circuit manual from the 1960s. The circuit has an...