Power supply system for electronic device
AssigneeHon Hai Precision Industry Co., Ltd.
InventorKUANG-LIANG TANG
Life of this patent
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Abstract
A power supply system includes an AC power source, a converter, a relay switch, and a waveform monitoring circuit. The AC power source provides an AC voltage. The converter is capable of converting the AC voltage into a DC voltage. The relay switch is connected between the AC power source and the converter. The waveform monitoring circuit is connected to the AC power source, and monitors a waveform of the AC voltage provided by the AC power source. The waveform monitoring circuit is connected to the relay switch, and turns on the relay switch when an absolute value of an instantaneous voltage of the AC voltage is not bigger than a threshold voltage.
Claims16
A power supply system, comprising:
- an AC power source which provides an AC voltage;
- a converter capable of converting the AC voltage into a DC voltage;
- a relay switch connected between the AC power source and the converter;
- and
- a waveform monitoring circuit, connected to the AC power source, capable of monitoring a waveform of the AC voltage provided by the AC power source;
- wherein the waveform monitoring circuit is connected to the relay switch and is capable of turning on the relay switch when an absolute value of an instantaneous voltage of the AC voltage is not bigger than a threshold voltage.
A power supply system, comprising:
- an AC power source which provides an AC voltage;
- a converter connected to the AC power source via a relay switch;
- a waveform monitoring circuit connected to the relay switch to control on or off of the relay switch;
- wherein the waveform monitoring circuit is capable of monitoring a waveform of the AC voltage, and turning on the relay switch when an instantaneous value of the AC voltage is zero.
A waveform monitoring circuit comprising:
- a circuit connected to a AC power source, capable of monitoring a waveform of an AC voltage provided by the AC power source;
- wherein the circuit is connected to a relay switch and is capable of turning on the relay switch when an absolute value of an instantaneous voltage of the AC voltage is not bigger than a threshold voltage.
Dependencies are inferred from the claim text.