This circuit filters low frequency noise from the turntable motor. We found it in a 1989 documentation. The font doesn't have to be symmetrical, but it should have excellent filtering.
This circuit is from an American publication from 1974. It, at the same time, limits the intensity of...
Found in a 1995 documentation, this circuit is an alternative output to the previous circuits. The MOSFETs...
This circuit divides the voltage of a 6 to 15 V source by 2 in order to obtain a symmetrical...