This voltage inverter uses a small transformer. The circuit was found in the April 1995 issue of Electronics Now magazine. The output current is very low.
This portable transceiver circuit for the 11 meter or 27 MHz band was found in a 1991...
This circuit was found in an American 1980s documentation. It makes use of an unusual MOSFET today...
This circuit was found in an old Linear Technology documentation. The working principle can be...