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

A DC power supply can be controlled through an optical fiber. The circuit includes a small DC motor (1/12 hp) that offers an isolated speed control channel. The control logic operates as an independent module, consuming 300 mW of power at 12V, and can be powered by a battery. The control module is capable of providing an infrared pulse duty cycle and determining the speed based on the position of a speed control potentiometer at a frequency of 160 Hz. A programmable unijunction multivibrator is utilized to adjust the duty cycle within a range of 1% to 99%, generating a pulse of approximately 10 mA, identified as GFOE1A1.

The described circuit integrates a DC power supply with optical fiber control capabilities, enhancing the versatility of motor speed regulation. The small DC motor, rated at 1/12 horsepower, serves as the actuator, while the optical fiber communication allows for remote operation, minimizing electrical noise and interference typically associated with traditional wiring methods.

The independent control module operates at a nominal voltage of 12V and consumes 300 mW, making it suitable for battery operation. This characteristic is essential for applications requiring portability or in environments where conventional power sources are unavailable. The inclusion of an infrared pulse duty cycle feature enables precise control over the motor's speed, with the frequency set at 160 Hz, which allows for rapid adjustments in response to varying operational demands.

The speed control is facilitated through a potentiometer, which alters the input to the control module, thereby adjusting the motor's performance. The programmable unijunction multivibrator (GFOE1A1) is a key component in this system, capable of generating pulses with a duty cycle adjustable from 1% to 99%. This flexibility allows for fine-tuning of the motor speed, catering to specific application requirements.

In summary, this circuit design presents a robust solution for controlling a DC motor via optical fiber, emphasizing efficiency, modularity, and programmability. The combination of these elements positions this system as an effective choice for modern applications requiring reliable and precise motor control.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.