PWM signal generator

Details PWM signal generator PWM signal generator

2006-10-17

2009-12-29

Cox, Cassandra (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Rectangular or pulse waveform width control

C327S175000

Reexamination Certificate

active

07639055

ABSTRACT:
After an output signal S4is level-inverted, first and second shorting FETs55, 56as a level-inversion inhibiting circuit inhibit level-inversion so that the signal is maintained to the inverted state. Thereafter the inhibition of level-inversion is released, when the signal is subsequently level-inverted at a proper time according to a desired duty ratio of a PWM signal S1. Thus chattering can be prevented and thereby a PWM signal S1of a stable duty ratio can be generated, even if the level of a reference signal S3fluctuates due to a noise or the like during vehicle acceleration, for example.

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