The circuit shown in the figure below is from the 1993 Linear Technology Applications. The operational ones used are uncommon and the use of equivalents can be analyzed.
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...