This 100 MHz bridge circuit was found in an American 1970s documentation. The supply voltages are not indicated, nor are the tubes.
This circuit is from a 1975 technical documentation on filters. The FET can be a BF245 and the...
This single-cell Li-Ion battery charger was found in a 2005 Linear Technology manual. The circuit...
This amplifier is from Motorola's 1990 Linear Databook. The circuit can be used with operating...