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AC/DC power circuit

A power supply circuit and voltage source technology, applied in the direction of converting irreversible AC power input into DC power output, adjusting electrical variables, instruments, etc., can solve the problems of power loss, loss, high power, etc., to improve efficiency and reduce power loss , the effect of saving power

Inactive Publication Date: 2015-05-20
SYST GEN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this type of power supply has the disadvantage of high power loss, especially under light load and no load conditions
The above-mentioned resistor 12 and Zener diode 16 will produce significant power loss, so in order to save power, the power loss must be reduced

Method used

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Embodiment Construction

[0050] In order to enable the examiner to have a better understanding and understanding of the structural features and achieved effects of the present invention, a diagram of a preferred embodiment and a detailed description are attached, as follows.

[0051] see figure 2 , which is a circuit diagram of the power supply of the present invention. As shown in the figure, the rectifier circuit 10 is coupled to an input terminal IN of a supply circuit 20 and receives the line voltage V AC , to generate the input voltage V IN . Input voltage V IN is a voltage source and is rectified by the rectifier circuit 10 . The supply circuit 20 will generate a supply voltage V at a first output terminal SW C , and generate an output voltage V at a second output terminal OUT 0 . A ground terminal GND of the supply circuit 20 is coupled to the ground. A capacitor 50 is coupled to the first output terminal SW. In addition, there is a capacitor 55 coupled to the second output terminal O...

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PUM

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Abstract

The related high-efficient power circuit comprises: an input electric crystal with negative critical value coupled with a voltage source to supply power to the output end of power circuit, an input detection circuit coupled with voltage source to generate a control signal when source voltage over the critical value, a second electric crystal coupled with detection circuit to stop the former crystal according to control signal, an output detection circuit coupled with the power to generate the first enable signal to stop the input crystal when the supply power over the high-output threshold and the second enable signal to stop the power circuit output when the voltage less than the low threshold.

Description

technical field [0001] The present invention relates to a power converter, in particular to a power circuit of the power converter. Background technique [0002] see figure 1 , which is a circuit diagram of a conventional power supply. As shown in the figure, the power supply is used to convert the line voltage (line voltage) V AC converted to a regulated voltage V Z . A rectifier circuit 10, which is coupled to the line voltage V AC and rectified to generate an input voltage V IN . A capacitor 11, which is coupled to the rectifier circuit 10 and receives the input voltage V IN And coupled with a capacitor 15 to generate the adjustment voltage V Z . A zener diode 16 is coupled to the capacitor 15 and the ground for adjustment. A resistor 12 is used to discharge the capacitor 11 . This type of power supply has been widely used in household devices, such as coffee machines, cooling fans, and remote controls. However, this type of power supply has the disadvantage o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05F1/56H02M7/04
Inventor 杨大勇
Owner SYST GEN