Found in a 1968 Motorola publication, this circuit generates a high-powered audio tone when triggered. Equivalent transistors can be used.
This circuit was found in an Electronic Design from the 80's. It shows how to use a MOSFET driver with...
This sophisticated NiCad battery charger was found in a 1990s Elektor. The components used are...
This simple general-purpose transistor mixer was taken from an article in Electronics Now magazine in...