SPEED_CONTROL_FOR_3_V_MOTOR

Published:2009/7/7 1:51:00 Author:May | From:SeekIC

Designed for use with hobby or toy motors running at about 10,000 rpm and powered by 3-V to 6-V batteries. Uses 4011 CMOS NAND gate with diodes and power transistor to provide variable duty cycle, so adjustment of 1-megohm speed control varies average voltage applied to motor without affecting peak voltage. Motor battery is connected between + terminal and ground of circuit.-J. A. Sandier, 11 Projects under $11, Modern Electronics, June 1978, p 54-58.



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