Kelvin double bridge with zener diode failure circuit专利检索-雪崩二极管二极管真空电子管电子零件及设备专利检索查询-专利查询网

Kelvin double bridge with zener diode failure circuit

阅读：992发布：2022-10-19

专利汇可以提供Kelvin double bridge with zener diode failure circuit专利检索，专利查询，专利分析的服务。并且In a Kelvin four-terminal double bridge circuit with a detector, an avalanche or Zener diode or similar voltage responsive device is connected across a current terminal to an adjoining voltage terminal. The avalanche diode has a breakdown voltage sufficiently smaller than the bridge supply voltage to conduct and cause a definitive change in the detector if the current terminal fails to engage a resistance under test.，下面是Kelvin double bridge with zener diode failure circuit专利的具体信息内容。

权利要求

1. A Kelvin four-terminal double bridge circuit comprising: first, second, third and fourth terminals for engaging a resistance under test; first, second and third resistance arms serially connected between the first and third terminals; fourth and fifth resistance arms serially connected between the first and second terminals; a detector connected between the junctions of the fourth and fifth resistance arms and the junction between the second and third resistance arms; a voltage source connected between the junction of the first and second resistance arms and the fourth terminal; and a voltage responsive device connected between the third and fourth terminals, said voltage responsive device having a first resistance greater than 10,000 times the contact resistance between the third and fourth terminals at voltages less than 1 volt and a second resistance less 100 times the contact resistance between the third and fourth terminals at a voltage less than the supply voltage but greater than 1 volt. 1

2. A Kelvin four-terminal double bridge as defined in claim 1 wherein voltage responsive device is an avalanche diode.

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Kelvin double bridge with zener diode failure circuit

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