Power circuit capable of automatically converting voltage
A power supply circuit and automatic conversion technology, applied in the direction of conversion equipment without intermediate conversion to AC, can solve problems such as electrical product or equipment damage, user loss, adjustment errors, etc., to simplify design, reduce manufacturing difficulty and cost, The effect of fewer components
Active Publication Date: 2012-08-08
TEN PAO ELECTRONICS HUIZHOU
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Problems solved by technology
With these adjustment methods, adjustment errors often occur, and the output voltage of the power supply may not be the required voltage. If the switching power supply is connected to electrical products or equipment at this time, expensive electrical products or equipment may be damaged and cause serious harm to users. cause great loss
Method used
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[0038] In order to facilitate the understanding of those skilled in the art, the present invention will be further described in detail below in conjunction with specific embodiments and accompanying drawings.
[0039] like figure 1 As shown, the circuit of the present invention includes a DC output connector unit and a control unit connected to the connector unit through a plug socket, and the control unit includes a decoding circuit for identifying the internal signal line code of the connector, for The stabilized power supply circuit that provides working power to the decoding circuit, the output voltage adjustment circuit that is connected to the photocoupler to adjust the output voltage of the switching power supply through the photocoupler, and the output voltage adjustment circuit that is triggered by the signal of the decoding circuit to control the output A switch control circuit for output strength of the voltage adjustment circuit.
[0040] Figure 2-Figure 4 , which...
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The invention discloses a switch power supply circuit with adjustable output voltage, comprising a DC output connector unit and a control unit, wherein the control unit is connected with the DC output connector unit through a patchplug socket positioned among DC output lines of a switch power supply; and the control unit comprises a decoding circuit, a voltage-stabilizing power supply circuit, anoutput voltage regulation circuit and a switch control circuit, wherein the decoding circuit is used for identifying the codes of an inner signal wire of a connector; the voltage-stabilizing power supply circuit is connected with the decoding circuit and is used for providing a working power supply for the decoding circuit; the output voltage regulation circuit is connected with a photoelectric coupler and regulates the output voltage of the switch power supply through the photoelectric coupler; and the switch control circuit is connected with the output voltage regulation circuit and controls the output intensity of the output voltage regulation circuit by being triggered by a signal of the decoding circuit; and the DC output connector unit adopts a three-state coding system. The invention programs through connectors which has different specifications and are connected to the output end to change output voltage, realizes that the output voltage of the switch power supply is completely accurate and adjustable within a preset voltage range and has simple circuit and low cost.
Description
technical field [0001] The invention relates to the field of switching power supply, in particular to a power supply circuit in which the output voltage is changed by programming through connectors of different specifications connected to the output end in the switching power supply. Background technique [0002] In some application fields, users hope that electrical products and equipment with similar functions but different models or types can be powered by the same power supply, but different products or equipment have different rated operating voltages and require different power supply voltages. The connectors used together are not exactly the same, so the output voltage of the switching power supply and the connectors need to be changed according to the replacement of the product or equipment to achieve a completely matching power supply. [0003] At present, in the field of switching power supplies, in order to realize a single-output independent power supply that can...
Claims
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IPC IPC(8): H02M3/04
Inventor 洪光岱
Owner TEN PAO ELECTRONICS HUIZHOU