This high-impedance headphone circuit was found in a 1990s William Sheets. The power is low, but the high input impedance makes it useful for radio applications.
This circuit is a high voltage source for a gas LASER. We found it in a documentation from the...
With this circuit it is possible to control a current of several amps, depending on Q1, from a low...
Datasheet of We found this circuit in the 1982 SGS Linear Integrated Circuits manual. A | table...