This National Semiconductor circuit uses an operational amplifier that is uncommon today. The power supply must be symmetrical.
This circuit, in addition to providing an output that corresponds to the absolute value of the...
Found in American documentation, this circuit uses an automotive ignition coil to generate 20 kV. The...
This power supply was found in a 2000 documentation. It can supply currents from 2 A to 15 V and 1...