This 1969 Mullar circuit appears elsewhere on this site. The circuit uses germanium diodes and the indicator is microammeter with zero in the center of the scale.
This circuit, which has a power of a few tens of microwatts, is suggested by Maxim. The circuit has a...
July 2017 - Texas Instruments' new 3 A bq25601 single cell battery charger can be found on Mouser...
The purpose of this circuit is to monitor the output voltage of a power supply. The under and over...