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Commutating device

A technology of a rectifier device and a rectifier circuit, applied in the field of circuits, can solve the problem of not being able to obtain two output voltages, etc., and achieve the effect of good cross adjustment rate

Inactive Publication Date: 2008-05-21
东莞市东准电子科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In the existing rectifier device that can provide two output voltages, the transformer T1 needs to have two secondary windings.

Method used

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Embodiment Construction

[0019] In order to make the object, technical solution, and advantages of the present invention clearer, the embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0020] Please refer to FIG. 2 , which shows the rectification device provided by the first embodiment of the present invention, which includes: a transformer T2 , four diodes D1 , D2 , D3 , D4 , and two filter capacitors C1 and C2 .

[0021] Among them, the primary side of the transformer T2 is connected to the AC voltage, the secondary side of the transformer T2 is a secondary winding with a center tap, and four diodes D1, D2, D3, D4 form a full-bridge rectifier circuit, which is connected to The two ends of the secondary winding with a center tap, the specific connection relationship is as follows:

[0022] The anode of diode D3 and the cathode of diode D1 are connected to one end of the secondary winding of transformer T2, the cathode of diode D3 is c...

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Abstract

The invention discloses a rectifier, comprising: a transformer, a rectifier, a first filter capacitor (C1), a second filter capacitor (C2); the rectifier is connected to both ends of the transformer, and the first filter capacitor ( The anode of C1) is connected to the middle tap of the secondary winding of the transformer device, the anode of the second filter capacitor (C2) is connected to the first output end of the rectifier circuit, the cathode of the first filter capacitor (C1) and the second filter capacitor ( The cathode of C2) is connected to the second output end of the rectification circuit, the second output end of the rectification circuit is grounded, the output voltage of the first output end of the rectification circuit is the first output voltage of the rectification device, and the middle tap of the secondary winding of the transformer The output voltage is the second output voltage of the rectifying device. The rectifying device provided by the embodiment of the present invention can provide output voltages in which the two outputs have a voltage doubling relationship, the withstand voltage of the diode is reduced by half compared with the full-wave rectifying circuit, and the cross adjustment rate of the two outputs is very good.

Description

technical field [0001] The invention relates to the field of circuits, in particular to a rectifying device. Background technique [0002] Please refer to FIG. 1 , which is an existing rectifying device capable of providing two output voltages. The rectifying device includes: a transformer T1, four diodes D1, D2, D3, D4, and two filter capacitors C1 and C2. It can be seen from Figure 1 that the primary winding of the transformer T1 is connected to the AC voltage, and the first secondary winding and the second secondary winding of the transformer T1 share a middle tap, wherein the first secondary winding and the diodes D3 and D4 constitute the first full circuit Wave rectification circuit, one end of the filter capacitor C1 is connected to the voltage output end of the first full-wave rectification circuit, and the other end is grounded, the output voltage of the first full-wave rectification circuit after filtering is V1; the second secondary winding of the transformer T1, t...

Claims

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Application Information

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IPC IPC(8): H02M7/06H02M1/14
Inventor 杨东平
Owner 东莞市东准电子科技有限公司
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