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Circuit board

A circuit board and circuit technology, applied in the direction of printed circuit components, etc., can solve the problems of circuit board burning, product thermal shutdown, and high branch current, and achieve the effect of avoiding thermal shutdown.

Inactive Publication Date: 2012-10-31
HONG FU JIN PRECISION IND (SHENZHEN) CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0003] Generally, the heat-generating components on the circuit board mainly include wires, copper foils, and through holes for connecting the upper and lower layers. The unbalanced circuit design of the circuit board causes the current of some branches to be too high. Excessive current will often cause the local temperature of the circuit board to rise, resulting in thermal shutdown of the product and even the burning of the circuit board.

Method used

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  • Circuit board

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Embodiment Construction

[0012] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0013] See figure 1 , the circuit board provided by the embodiment of the present invention, which includes a plurality of branch circuits Rpcb (Rpcb1, Rpcb2, Rpcb3...), a connector Rconj provided on each branch circuit Rpcb, and a branch current regulation module 100 , wherein each branch circuit Rpcb is electrically connected to the external load Rload through the connector Rconj.

[0014] The circuit board branch current control module 100 includes a plurality of variable resistors R ( R1 , R2 , R3 . . . ) and a decision-making control unit 110 . The multiple variable resistors R (R1, R2, R3...) are respectively connected in series in the multiple branch circuits Rpcb (Rpcb1, Rpcb2, Rpcb3...), in this embodiment, the variable resistors R are connected in series in the branch circuits between the road circuit Rpcb and the connector Rconj, and the initial ...

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Abstract

The invention relates to a circuit board, which comprises a plurality of branch circuits and a branch circuit regulating and controlling module, wherein the branch circuit regulating and controlling module is used for monitoring the current of each branch circuit to determine the minimum branch current and regulating and controlling the current of each branch circuit having the current greater than the minimum branch current, so as to enable the current to be approximate to or equal to the minimum branch current.

Description

technical field [0001] The invention relates to a circuit board. Background technique [0002] Circuit board, as an important electronic component, is the support of electronic components and the provider of circuit connections for electronic components. With the continuous refinement of electronic products, the circuits carried by circuit boards are becoming more and more complex, and the heat emitted by these complex circuits during work is also constantly testing the thermal tolerance of circuit boards. [0003] Generally, the heat-generating components on the circuit board mainly include wires, copper foils, and through holes for connecting the upper and lower layers. The unbalanced circuit design of the circuit board causes the current of some branches to be too high. Excessive current will often cause the local temperature of the circuit board to rise, resulting in thermal shutdown of the product and even the burning of the circuit board. [0004] Therefore, when the...

Claims

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Application Information

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IPC IPC(8): H05K1/02
Inventor XU SHOUGUOCHEN YONGJIELIANG XIANQUANLI SHENGJUNZENG WENLIANGBAI JIANAN
Owner HONG FU JIN PRECISION IND (SHENZHEN) CO LTD
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