This circuit is from old American documentation, using a regulator integrated circuit that is uncommon today. The diodes can be 1N4002 and the transformer has a 500mA secondary.
This circuit was found in a 1999 documentation, but it can still be easily assembled today, as the...
This interesting circuit provides an output proportional to the input voltage, regardless of its...
This circuit is based on the Linear Technology LT1495 and was found in a 2005 manual. The circuit...