RADIO_CONTROL_FOR_MOTOR

Published:2009/7/20 1:42:00 Author:Jessie | From:SeekIC

Proportional control system produces control pulses every 20 ms, with length of each adjustable between 1 and 2 ms. Circuit removes first 1 ms of pulse and expands remainder to produce 0-20 ms pulses for driving motor. Pulsing of motor gives smoother control than resistors, particularly at very low speeds. Transistor types are not critical. Tr5 can be OC28. Optional dashed connection of 8.2K resistor provides foldback current/voltage protection.-M. Weston, Variable-Speed Radio Control Motor, Wireless World, Feb. 1978, p 59.



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