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PWM Input [
In the positive period]
PWM Input [In the negative period]
L × 2
L × 2
PWM Input Wave
(Motor Power)
The motor current in positive period of PWM drive is
flows as follows.
VM1→ Q2→ L→ Q3→ R
PWM Input Wave
(Motor Power)
The motor current in negative period of PWM drive
is flows as follows by the reverse electromotive force.
D1→ L→ Q3→ R
53
form
at Q2-b
form
at Q2-b
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