Based on the Linear Technology LTC2054, this -48 V circuit was found in a 2005 manual. The circuit is powered with 5 V and can be used as a shield.
This is one of many possible touch switch configurations using CMOS integrated circuits. The...
This circuit was found in documentation from the 1980s requiring a variable power supply from 0 to...
The integrated circuit used in this project is unusual and it includes internal transistors that...