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Power supply method for electric apparatus

A technology for electronic equipment and charging circuits, applied in battery circuit devices, secondary battery charging/discharging, arrangement of multiple synchronous batteries, etc.

Inactive Publication Date: 2008-07-30
FUJITSU LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, there is a problem that the power supply line acts as an antenna to radiate electromagnetic waves into the air

Method used

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  • Power supply method for electric apparatus
  • Power supply method for electric apparatus
  • Power supply method for electric apparatus

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Embodiment Construction

[0010] Reference will now be made in detail to embodiments of the invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals are used to refer to like parts throughout.

[0011] The best mode for carrying out the present invention is described with reference to the accompanying drawings. The following embodiments are described with reference to the drawings. The following embodiments are merely illustrations, and the present invention is not limited to these embodiments.

[0012] FIG. 2 is a structural block diagram of an electronic device 1200 according to the first embodiment of the present invention. Electronic device 1200 internally has a plurality of circuit blocks 10-1, 10-2, and 10-3 constituted by large scale integration (LSI) or the like. The circuit block is connected to a signal line (not shown in the drawing), and performs processing determined based on the content of a signal transmitted through the signal line.

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Abstract

The invention relates to a power supply method for electronic equipment. The electronic device includes a plurality of circuit blocks, a plurality of power sources; and a plurality of power input parts that receive power in one-to-one correspondence with the plurality of circuit blocks, wherein the power source is located near the power input part and is connected to the power input part. The power input is connected.

Description

technical field [0001] The present invention relates to a method for suppressing electromagnetic wave noise radiation in portable electronic equipment. Background technique [0002] FIG. 1 is a block diagram showing the structure of a conventional electronic device. The electronic device includes a plurality of circuit blocks 10-1 to 10-3. The plurality of circuit blocks 10 - 1 to 10 - 3 receive power from the power supply circuit 300 through the power supply line 320 . The power supply circuit 300 is a constant voltage power supply that regulates the voltage supplied to the circuit blocks 10-1 to 10-3 to a constant voltage. A large current supplied to the circuit block from the power supply circuit flows to the power supply line. As a result, the power supply lines require a large amount of wiring space in order to reduce line impedance. And this large amount of wiring space becomes an obstacle to the miniaturization of portable devices. In addition, a high-frequency c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/44H02J7/00
CPCH02J7/0013H02J7/0068H02J7/345
Inventor 中尾友幸
Owner FUJITSU LTD