Found in an Electronic Design of the 90's, this circuit provides an additional 12 V output to a 5 V regulator. The maximum current is 200 mA.
This small power amplifier makes use of an output transformer given its design time. In fact, the...
This circuit is from a 1993 Italian magazine, but it can be easily assembled today. For 110 V,...
This two-way switch or control shows how to control a lamp from two points. This version is from a...