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Resistor having increasing resistance due to increasing voltage

A resistance element, resistance value technology, applied in the direction of electrical components, varistors, resistors, etc., can solve the problems of slow start, large load current, burnout, etc., to prevent excessive power, simple structure, and fast conduction Effect

Inactive Publication Date: 2018-10-09
王中林
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, when using this constant resistance element, it is necessary to select one with a suitable resistance value in response to the working environment voltage and current conditions.
Otherwise, if you choose a resistance element with too small resistance value, although it is easy to turn on, it is also easy to cause the load current to be too large as the voltage rises, and it will eventually burn out and cannot be used.
If the resistance element with too large resistance value is selected, it will start slowly or even fail to open
Therefore, this kind of resistance element will have its rated condition limit for voltage and current, and if it exceeds the specified value, it will fail or cause irreversible damage due to excessive power

Method used

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  • Resistor having increasing resistance due to increasing voltage
  • Resistor having increasing resistance due to increasing voltage
  • Resistor having increasing resistance due to increasing voltage

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Embodiment Construction

[0051] based on the following Figure 2 to Figure 11 , and the embodiment of the present invention will be described. This description is not intended to limit the embodiment of the present invention, but is one of examples of the present invention.

[0052] like figure 2 As shown, the resistor element 100 according to an embodiment of the present invention includes: a base layer 1 , an upper ohmic region 2 , an upper metal connection layer 3 , a lower ohmic region 4 and a lower metal connection layer 5 .

[0053] In this embodiment, the base layer 1 , the upper ohmic region 2 and the lower ohmic region 4 are semiconductors of the same conductivity type. The base layer 1 is doped with a low concentration, and the upper ohmic region 2 and the lower ohmic region 4 are doped with a high concentration. The substrate of the semiconductor can be any semiconductor material, such as Si, SiC, GaN / Si, GaAs and other materials. The upper ohmic region 2 is a well-shaped high-concentr...

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Abstract

A resistor related in the invention comprises a substrate, an upper ohmic region disposed on a selective one of an upper surface and a lower surface of the substrate, an upper metal conducting layer overlies on the substrate and the upper ohmic region, and a lower metal conducting layer overlies on the lower ohmic region. When the upper and lower metal conducting layers are electrified, the upperohmic region and the lower ohmic region are electrically connected, as a result, a resistance value of the resistor is increased when an applied voltage on the resistor is increased.

Description

technical field [0001] The present invention relates to a resistance element, in particular to a resistance element whose resistance value increases as the voltage increases. Background technique [0002] Resistive components are common components in electronic circuits, which generally refer to all electronic components that form resistance. The main function of the resistance element is to provide resistance to the flow of current in the circuit, and to control the ratio of voltage and current in the circuit. Depending on the application and characteristics, there are many types of resistor elements, which generally include metal resistor elements, electrolyte resistor elements, and semiconductor resistor elements according to material classification. [0003] figure 1 Shown is an example of an existing semiconductor constant resistance element, which includes a base low-concentration doped semiconductor layer L(n-), a high-concentration doped semiconductor layer H(n+) o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01C1/12H01C7/00
CPCH01C1/12H01C7/006H01C7/1013H01C7/102H01L28/20
Inventor 王中林
Owner 王中林
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