This circuit for controlling a model of an elevator via wire was found in the December 1997 issue of Electronics Now magazine. DC motors must be rated at the voltage of the transformers.
We found this circuit in a 1975 publication. The circuit can be made with more modern equivalent...
August 2016 - It can be obtained from Mouser Electronics the power factor controller NCP1602 from...
This is a traditional circuit in which a 741 operational amplifier is used as an audio amplifier with...