LOGIC_DRIVE_FOR_INDUCTIVE_LOAD

Published:2009/7/13 5:04:00 Author:May | From:SeekIC

When output of NAND gate goes high and furnishes 10 mA to LED of Motorola M0C3011 optically coupled triac driver, output of optoisolator provides necessary trigger for triac controlling inductive load.C1 is 0.22 μF for load power factor of 0.75 and 0.33 μF for 0.5 power factor. Omit C1 for resistive load. R1, R2, and C1 serve as snubber that limits rate of rise in voltage applied to triac.-P. O'Neil, Applications of the MOC3011 Triac Driver, Motorola, Phoenix, AZ, 1978, AN-780 p 2.



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