This small signal amplifier circuit was found in Motorola's 1969 documentation. The FET and the transistor can be of any type and is battery powered since the consumption is very low.
This circuit was found in an American 1980s documentation. The components are current but most...
Found in a Popular Electronics from the 90s, this circuit applies to flashes with xenon lamps. The...
Found in old documentation for radio amateurs, this circuit is intended to excite a MOSFET on the...