High value resistor, voltage divider based on the same

A technology of resistors and resistors, applied in the direction of resistors, resistor electrostatic/electromagnetic shielding devices, electrical components, etc., can solve problems such as shielding layer leakage current

Inactive Publication Date: 2008-10-08
北京航天河科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In order to solve the problem of leakage current between the high-value resistor and its shielding layer...

Method used

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  • High value resistor, voltage divider based on the same
  • High value resistor, voltage divider based on the same
  • High value resistor, voltage divider based on the same

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Embodiment Construction

[0031] The technical solution of the present invention will be described in detail below in conjunction with the accompanying drawings, and the technical effect of the present invention will be demonstrated and described theoretically.

[0032] figure 2 The structural principle of one embodiment of the high-value resistor of the present invention is shown. The resistor 20 is arranged in a glass tube 21 as an insulating layer, the inside of the glass tube 21 is evacuated, and the resistor 20 is coated with an insulating material. The shielding layer 22 is wrapped on the outer surface of the glass tube 21, and the material of the shielding layer 22 is a resistive film. The preferred scheme is that the shielding layer 22 is arranged on the lateral outer surface of the glass tube 21, and along the long axis direction of the columnar resistor 20, the length of the shielding layer 22 is equal to the length of the resistor 20, and this scheme makes the leakage of the resistor mini...

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Abstract

The present invention provides a high-value resistor that can implement complete equal-potential shielding and a voltage divider based on the high-value resistor, in order to solve the problem that leakage current still exists between the high-value resistor and the shielding layer in the prior art. The high-value resistor comprises a resistor and an insulating layer and a shielding layer that are arranged orderly from interior to exterior around the resistor; wherein, the same voltage is applied between the ends of the resistor and the ends of the shielding layer. With the technical scheme of the present invention, the voltage drop on the high-value resistor is identical to the voltage drop on the shielding layer, and therefore leakage current exists between the high-voltage resistor and the shielding layer. In that way, the problem described above in the prior art is solved. A plurality of high-value resistors provided in the present invention can form voltage dividers with different ratios.

Description

technical field [0001] The invention relates to a resistor, especially a resistor with high resistance value. Background technique [0002] High-value resistors are greatly affected by environmental factors such as humidity and electromagnetics, that is, environmental factors cause large fluctuations in the resistance of high-value resistors in working conditions, and the magnitude of this fluctuation is proportional to the resistance of the resistor. Therefore, eliminating the influence of environmental factors on high-value resistors is a problem that must be solved in high-value resistor applications. [0003] In order to eliminate the influence of moisture and electromagnetic on high-value resistors, a technical solution of setting a shielding layer on the periphery of high-value resistors is often adopted. However, the solution of simply setting the shielding layer has the following problems: because there is a potential difference between the shielding layer and the r...

Claims

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Application Information

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IPC IPC(8): H01C1/06H01C13/00
Inventor 桑琳王斌严明屠治国
Owner 北京航天河科技发展有限公司
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