Suggested by National Semiconductor in documentation from the 90s, this circuit makes use of an operational of the time. The configuration can be applied to modern equivalent components
The purpose of this circuit is to monitor the output voltage of a power supply. The under and over...
This circuit, from an old publication from the 70s, uses neon lamps as indicators and can work on...
This high input impedance circuit was found in a Popular Electronics of the 90s. The circuit...