The figure shows how to use an LM3914 with a variable range moving point. The circuit has an operating point adjustment.
This high-power amplifier with Japanese transistors from the 70s provides an output power of 150 W...
Using the four amplifiers of an LM324 this circuit was found in the June 1996 issue of Electronics Now...
We found this control circuit for three-phase motors used in the control of doors and gates in a...