This circuit activates a relay when the supply voltage drops below the value set in the trimpot. The transistors can be the BC548 and BC558 and the 6 V relay. The circuit was found in a 1999 Poptronics.
This UHV generator circuit or ultra-high voltage was found in a 90s Electronic Engineering 90s. The triac...
This circuit is suggested by National Semiconductor and is based on a DAC1280A Digital Analog...
We found this circuit in the April 1996 issue of Electronics Now magazine. The circuit uses a...