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 water level control circuit was found in a 1980s documentation. The circuit uses a capacity...
This circuit was obtained in an English publication from 1980 but can still be assembled with...
This circuit is from an American cookbook from 1977. The circuit generates a voltage of...