Patent ID: 8035940

Claim:
An over-voltage protection circuit structure for protecting a high power translation circuit comprising a rectification circuit, the over-voltage protection circuit structure being electrically connected to a alternating current input terminal to receive an alternating current input and comprising: a relay circuit, being coupled to the rectification circuit of the high power translation circuit and the alternating current input terminal, and configured to relay the alternating current input to the rectification circuit of the high power translation circuit; a voltage detection module, being coupled to the relay circuit and configured to continuously detect a voltage value corresponding to the alternating current input, being configured to generate an over-voltage signal when the voltage value is greater than or equal to a first reference value, the relay circuit being configured to open to cease delivering the alternating current input into the high power translation circuit in response to the over-voltage signal; and an energy supply circuit, being coupled to the relay circuit and the voltage detection module, being configured to provide a power to an auxiliary supply generation module in response to the alternating current input to power the voltage detection module, so that the voltage detection module operates normally; wherein a bulk capacitor is charged via the energy supply circuit to stabilize the bulk capacitor at a safe voltage value when the relay circuit is opened, and the bulk capacitor may supply the energy to the auxiliary power supply generation module.