Patent ID: 7684219
Filing Date: 2010-03-23
Classification: H02J,H02M

Abstract:
1. A multiplexed DC voltage regulation output circuit, comprising: a first output circuit configured for outputting low voltage; a second output circuit configured for outputting high voltage; a transformer configured for outputting voltages to the first output circuit and the second output circuit; a power control chip; a feedback circuit configured for feeding composite signals of the first output circuit and the second output circuit to the power control chip, the power control chip configured for adjusting the output voltages of the transformer by changing an impulse width of voltages transmitted from the power control chip into the transformer in accordance with the composite signals; and a control circuit configured for controlling the output voltage of the second output circuit down to a normal high voltage when the output voltage of the second output circuit is higher than the normal high voltage; wherein the control circuit comprises: