Multi-voltage transformer circuit
A step-down circuit and circuit technology, applied in the field of circuits, can solve the problems of wasting cost, occupying space, complex circuit structure, etc., and achieve the effect of low cost and simple structure
Active Publication Date: 2017-05-17
SHENZHEN OCEANS KING LIGHTING ENG CO LTD +1
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Problems solved by technology
[0002] In the existing voltage transformation circuit, the drive circuit is relatively complicated in the load that needs to be transformed and stepped down. The products sold on the market are all aimed at the voltage value required by the load, and multiple independent voltage transformation circuits are used for multi-channel operation. The control of the output voltage requires more control components, resulting in a complex circuit structure, which wastes cost and takes up space
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[0015] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0016] see figure 1 The embodiment of the present invention provides a multi-voltage transformer circuit, which includes: a voltage source 11; a first step-down circuit 13 and a second step-down circuit 14 arranged in series between the voltage source 11 and the voltage output terminal 12 , and the third step-down circuit 15; the first input voltage control terminal 21, the first switch circuit 22, the second input voltage control terminal 23, and the second switch...
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The invention provides a multi-voltage transformation circuit. The multi-voltage transformation circuit comprises the following elements: a voltage source; a first voltage reduction circuit, a second voltage reduction circuit and a third voltage reduction circuit which are connected in series; a first input voltage control end; a first switch circuit which comprises a first PNP triode and a first NPN triode which are connected in series; a second input voltage control end; and a second switch circuit which comprises a second PNP triode and a second NPN triode which are connected in series. The multi-voltage transformation circuit, according to control level which is input by the first input voltage control end and the second input voltage control end and according to control of the first switch circuit and the second switch circuit, can transform voltages provided by the voltage source and respectively output multi-gear voltages to a voltage output end. The structure is simple and the cost is low.
Description
technical field [0001] The invention relates to the field of circuits, in particular to a multi-voltage transformer circuit. Background technique [0002] In the existing transformer circuit, the drive circuit is relatively complicated in the load that needs to be transformed and lowered. The control of the output voltage requires more control components, resulting in a complicated circuit structure, which wastes cost and takes up space. Contents of the invention [0003] In view of the above problems, the object of the present invention is to provide a multi-voltage transformer circuit with simple structure and low cost, which is suitable for various DC transformer loads. [0004] In order to solve the above technical problems, the present invention provides a multi-voltage transformer circuit, which includes: a voltage source; a first step-down circuit and a second step-down circuit arranged in series between the voltage source and the voltage output terminal, And a th...
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IPC IPC(8): H02M3/10
Inventor 周明杰黄世侠
Owner SHENZHEN OCEANS KING LIGHTING ENG CO LTD