By DC variable speed motor control circuit diagram of an optical fiber

DC power supply can also be controlled via an optical fiber. The circuit is a small DC motor ( 1/12hp) providing an insulating speed control channel. The control logic is an in

dependent module, at the time of 12V consumes 300mW of power, it can be powered by a battery. The control module can provide infrared pulse duty cycle and speed of the speed control potentiometer location 160Hz decision. Programmable unijunction multivibrator duty cycle in the range of 1% to 99% to provide a pulse of about 10mA is GFOE1A1.

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