This switched filter was found in the 1969 documentation. The FET should be current-matched and eventually equipped with a heat sink.
This circuit is from a current regulator up to 1 A, ie a constant current source. The LM320...
August 2017 - STMicroelectronics' new T850 switches with triacs up to 8 A can be obtained from...
The purpose of this circuit is to eliminate RF picked up by a turntable. The circuit is from a...