| 摘要 |
<p>PURPOSE: A reference bias voltage decision method of an AC-DC converter is provided to improve reliability of a AC-DC converter by converting an input alternating current signal into a direct current signal of the reference bias voltage. CONSTITUTION: An input bias voltage is converted to a direct current bias voltage(S100). The direct current bias voltage is detected(S200) consecutively on a constant cycle. A change whether or not of a direct current bias voltage is determined(S300). The direct current bias voltage is determined as a reference bias voltage(S400) based on a decision result. Motor driving is determined(S500) based on whether a motor driving signal is exist or not. If the motor driving signal exists(S600), the direct current bias voltage detection is suspended.</p> |
