| CPC H02M 7/2195 (2021.05) [H02M 1/4208 (2013.01); H02M 7/2176 (2013.01); H02M 7/08 (2013.01); H02M 7/23 (2013.01)] | 10 Claims |
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1. A control circuit for a circuit that includes:
a first line and a second line having an alternating current (AC) voltage applied thereto;
a first full-wave rectifier circuit including:
a first diode configured to cause a first current to flow from the first line,
a second diode configured to cause a second current to flow from the second line,
a third diode configured to cause a third current to flow to the first line,
a fourth diode configured to cause a fourth current to flow to the second line, and
a first switch to a fourth switch respectively connected in parallel with the first diode to the fourth diode, and being configured to rectify the AC voltage, to thereby obtain a first rectified voltage; and
a capacitor to which the first rectified voltage is applied,
the control circuit being configured to control the first to fourth switches, and comprising:
a determination unit configured to determine an off period in which, in a state where the AC voltage is applied to the first line and the second line, the first diode, the second diode, the third diode, and the fourth diode turn off, the off period including
a first period in which the first diode and the fourth diode turn off when the second diode and the third diode are off, and
a second period in which the second diode and the third diode turn off when the first diode and the fourth diode are off; and
a control unit configured to
turn on the first switch and the fourth switch in the first period,
turn on the second switch and the third switch in the second period.
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