Motor time division control circuit composed of transistor and NE555

Published:2011/6/30 21:06:00 Author:Lucas | Keyword: Motor , time division, control circuit , transistor | From:SeekIC

Figure 2-32 (a) shows the time control diagram, and the motor is operated by the switch S1. When Sl is turned to 1, the power driver circuit provides current to the motor for running; When S1 is turned to 2, the drive current is cut off, and the electric motor is used as a generator to hold out the back electromotive force by the sampling circuit. S1is turned to 2 by the sampling circuit, the back electromotive force is used as a sample to keep until the next on / off cycle of S1. Keeping the hold voltage and speed settings voltage be same can provide power for the motor control circuit.



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