This vibrato circuit was found in Motorola's 1966 documentation. The circuit uses transistors of the time that can be replaced with current common types. Power is done with 3 9V batteries.
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...