Adjustable reference (CB21539E)

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

Alarm (CB196E)
When the sensor X1 is opened, the relay is energized. When waiting, the current drained is very...
AC Inverter Amplifier with 5 V MC33171 (CB15270E)
This circuit can also use other series operational amplifiers such as MC33172, MC33174, MC35171,...
Symmetrical 9 V Power Supply (CB18699E)
This circuit was originally designed to power the CB18698's MSX interface, but it is suitable for...