This circuit was found in an Electronics Now from the 90's. The integrated regulator circuit and the power transistor must be equipped with heat radiators.
This low pass filter has attenuation of 5.5 dB and the frequencies depend on the values of the...
This circuit is from an old 80's linear circuit manual. The configuration can be implemented with modern...
Found in an American 1980s documentation, this circuit makes use of a sensor of the era uncommon...