This circuit uses an unusual sensor nowadays, but the configuration can be adapted to more modern types, as well as the operational amplifier. The circuit is from an 80's documentation.
This circuit was used to regulate the speed of small DC motors of cassette recorders. However, if the...
This circuit was found in Harris' 90s documentation. The used component is uncommon today. |...
This simple power reducer, based on capacitive reactance, was found in a 1995 documentation. The...