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Power source characteristic testing insrument

A technology of power supply characteristics and testers, applied in the field of testers, can solve the problems that lithium-ion batteries cannot be charged, shorten the life cycle, and have no memory function, etc.

Inactive Publication Date: 2004-11-24
BENQ CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Lithium-ion battery is also a kind of battery with high energy density. It has no memory function and has a large storage capacity, but a special charger must be used, otherwise the lithium-ion battery may not be able to charge the battery or reduce the life cycle.

Method used

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  • Power source characteristic testing insrument
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  • Power source characteristic testing insrument

Examples

Experimental program
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Embodiment Construction

[0023] Please refer to figure 1 , figure 1 It is a schematic block diagram of the power supply characteristic tester 10 of the circuit of the present invention. The power characteristic tester 10 comprises a voltage test circuit 12, a current test circuit 14, a power management device (powermanagement) 16, a fuse (fuse) 18, a plurality of relays (relay) 20, a radiator (radiator) 22 and an adapter (adapter) twenty four. The voltage test circuit 12 and the current test circuit 14 are independent circuit systems, that is to say, the voltage test circuit 12 or the current test circuit 14 in the power characteristic tester 10 can be used alone, or both can be used simultaneously. Both the voltage test circuit 12 and the current test circuit 14 include an operational amplifier (operation amplifier). In this embodiment, the operational amplifier used in the voltage test circuit 12 is OP TDA2030, and the operational amplifier used in the current test circuit 14 is It is OP MC1741C....

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PUM

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Abstract

The power source characteristic measuring instrument includes voltage measuring circuit and current measuring circuit. The voltage measuring circuit includes the first operation amplifier with non-inversion input end connected to voltage source, the first relay, the second relay and the third relay for switching the voltage measuring circuit to simulate cell, charger or discharger. The current measuring circuit contains additional second operation amplifier and four resistors to constitute one differential amplifier and one other resistor connects between the two input ends of the differential amplifier.

Description

technical field [0001] The invention provides a tester, in particular a tester for a power supply characteristic of a circuit. Background technique [0002] In the modern society with advanced information, such as mobile phone (mobile phone), personal digital assistant (PDA, Personal Data Assistant), walkman (walkman), portable audio and video playback system, such as digital versatile disc player (Digital Versatile Disc Player) Portable electrical appliances such as hand-held computers, notebook computers, etc., are easy to carry, allowing users to exchange information, communicate with people, access data, and accumulate knowledge anytime, anywhere, further Improve the quality of life and work efficiency of users. Along with the volume of these portable electric appliances, weight dwindles further, it is common thing that same user carries more than two kinds of portable electric appliances with different functions. In order to be convenient for users to carry around, ge...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/36G01R31/40
CPCY02E60/12Y02E60/10
Inventor 蓝宗祥陈文暐
Owner BENQ CORP
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