| 摘要 |
A level-determining device of pulse width modulation (PWM) signal includes a PWM signal generating circuit, a reference voltage generating circuit and a determining circuit. The PWM signal generating circuit generates a first PWM signal. The reference voltage generating circuit generates a reference voltage signal. The determining circuit is respectively electrically connected to the PWM signal generating circuit and the reference voltage generating circuit for determining high level or low level of the first PWM signal in accordance with the reference voltage signal for generating a second PWM signal.
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