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Programmable resistor card

A technology of resistors and relays, applied in the direction of resistance elements including multiple resistance elements, can solve the problems of increased output error, reduced resistance output range, and affecting the accuracy of test and simulation results, so as to prevent damage and reduce linearity effect of error

Active Publication Date: 2013-09-18
NAT INSTR CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As the range of output resistance increases, the actual output error also increases, resulting in a decrease in the effective resistance output range of the programmable resistance card, which in turn affects the accuracy of the test and simulation results achieved by using the programmable resistance card

Method used

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  • Programmable resistor card
  • Programmable resistor card

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Embodiment Construction

[0030] Hereinafter, embodiments of the present invention will be described with reference to the drawings. The elements and features described in one drawing or one embodiment of the present invention may be combined with the elements and features shown in one or more other drawings or embodiments. It should be noted that, for the purpose of clarity, representations and descriptions of components and processes that are not related to the present invention and known to those of ordinary skill in the art are omitted from the drawings and descriptions.

[0031] See figure 1 Shown is a structural diagram of an embodiment of the programmable resistance card of the present invention.

[0032] In this embodiment, the programmable resistance card includes a control module 10, a resistance output module 20, and a storage module 30. The resistance output module includes a compensation circuit 21 and multiple sets of programming resistors 22. The control module 10 is used to control the tur...

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Abstract

The invention relates to a programmable resistor card, comprising a control module, a resistance output module and a memory module. The programmable resistor card provided by the invention can reduce linear errors caused by wiring resistors and the like and nonlinear errors caused by factors like thermal noise of a resistor itself and can also prevent possible damage to the control module when the resistance output module undergoes overcurrent or overvoltage.

Description

Technical field [0001] This application relates to a programmable resistance card. Background technique [0002] Programmable resistance card is a kind of electrical device that can control each resistance and circuit in the resistance array to be connected or disconnected through the controller, so as to realize a variety of different resistance values. It is widely used in sensor simulation, reference bridge resistance, Low-frequency signal loads, low-power power loads and other test and simulation systems that require precision resistance simulation. [0003] The programmable resistance card in the prior art can only guarantee a small output error within a small range of the output resistance. As the range of output resistance increases, the actual output error also increases, resulting in a reduction in the effective resistance output range of the programmable resistance card, which in turn affects the accuracy of the test and simulation results achieved by the programmable re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01C10/16
Inventor 王雪峰李璐阳徐世昌孙娴许文靓
Owner NAT INSTR CORP
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