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Method for digital multi-purpose meter on-line measurement for loop resistance value and the converter

A technology of digital multimeter and loop resistance, applied in the direction of measuring resistance/reactance/impedance, measuring electrical variables, multi-tester circuits, etc., to achieve the effect of simple and reliable device and method

Active Publication Date: 2009-12-16
SHENZHEN ZHENHUA MICROELECTRONICS
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Problems solved by technology

This solution also cannot easily complete the measurement of the loop resistance in the manufacturing process of the thick film hybrid integrated circuit, and realize the adjustment of the resistance value accuracy

Method used

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  • Method for digital multi-purpose meter on-line measurement for loop resistance value and the converter
  • Method for digital multi-purpose meter on-line measurement for loop resistance value and the converter
  • Method for digital multi-purpose meter on-line measurement for loop resistance value and the converter

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Embodiment Construction

[0042] Below in conjunction with accompanying drawing, the present invention is described in further detail:

[0043] see Figure 4 , Figure 5 and Figure 6 A method for implementing a digital multimeter online measurement of a resistance value in a loop resistance, said method comprising the steps of:

[0044] A. First set the measured resistance of the resistance to be measured in the resistance loop as R2, and set the detected point B and the detected point C of the digital multimeter at both ends of the resistor R2;

[0045] B. Then set a resistance connected to the measured resistance R2 as the protective resistance R1, and the detected point B is also the connection point between the protective resistance R1 and the measured resistance R2;

[0046] C. Set the other end of the connection between the protection resistor R1 and the resistors in other loops as the detected point A;

[0047] D. Then the detection terminal A68, the detection terminal B67, and the detectio...

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Abstract

A method and a converter for online measurement of a resistance value in a loop resistance with a digital multimeter include: determining a detected point B and a detected point C at both ends of the resistance to be measured, and then setting a resistance connected to the measured resistance as Protect the resistance, and then set the other end of the protection resistance R1 connected with the resistance in other loops as the detected point A, and connect the detection terminal A, detection terminal B, and detection terminal C of the loop resistance measurement converter to the detected point A. The detected point B and the detected point C are connected, and then connect the positive and negative test leads of the digital multimeter when measuring the resistance, and then measure the resistance value of the measured resistance R2. The resistance value measured by the invention without disconnecting the circuit has the same precision as the resistance value directly measured by a digital multimeter after disconnecting the circuit. Moreover, the device and method of the present invention are simple and reliable.

Description

technical field [0001] The invention relates to the measurement of resistance value, in particular to a method and equipment for accurately measuring the resistance value of one of the resistances online without disconnecting any connected resistance. Background technique [0002] In the manufacturing process of thick-film hybrid integrated circuits, it is often necessary to adjust the accuracy of the loop resistance. The resistance adjustment equipment can complete the adjustment of the loop resistance, but the digital multimeter cannot be used to measure the loop resistance. In practice, it can only be as follows: figure 1 As shown, a gap 33 is disconnected in the loop 32, and the gap 33 is connected after the resistance is adjusted to restore the original loop circuit form. Such a process method will lead to the complexity of the manufacturing process and also reduce the reliability of the product. [0003] Although the digital multimeter can accurately measure the resis...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R27/02G01R15/12G01R15/00
Inventor 孙元鹏
Owner SHENZHEN ZHENHUA MICROELECTRONICS
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