Surge current protection element for frequent starting device

A surge current and frequent start-up technology, applied to electrical components, emergency protection circuit devices for limiting overcurrent/overvoltage, circuit devices, etc. Problems such as excessive material resistance and difficulty in starting the circuit normally achieve the effect of improving low-temperature start-up capability, high-efficiency surge suppression capability, and reducing structural complexity

Pending Publication Date: 2019-07-05
NANJING SHIHENG ELECTRONICS
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  • Summary
  • Abstract
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Problems solved by technology

However, in the case of frequent starts, due to the material characteristics of the power NTC thermistor, it is difficult to return to the initial low temperature in a short time, so it cannot play a good role in surge suppression.
However, at low temperatures, due to the excessive resistance of the thermistor material, it is difficult to start the circuit normally.

Method used

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  • Surge current protection element for frequent starting device
  • Surge current protection element for frequent starting device
  • Surge current protection element for frequent starting device

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Embodiment Construction

[0015] In order to solve the problem of surge suppression under frequent start-up of the circuit, on the basis of the thermistor surge suppressor, the present invention adds a switch with a bimetal structure between the two pins of the combined resistance element, which is the same as the original The components are physically connected, and the high temperature of the original component can be transmitted to the connector relatively quickly. The connector and the original component are connected in parallel on the circuit to form a new component.

[0016] When the new component is powered on, the switch is in an open state, and the current flows through the NTC thermistor and the fixed resistor. This component can effectively suppress the surge current, and the NTC thermistor and the fixed resistor are under the action of the current. , self-heating, the temperature through heat conduction, so that the switch reaches the trigger condition, and the switch is turned on.

[0017...

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Abstract

The invention discloses a surge current protection element for a frequent starting device. The surge current protection element comprises pins, a resistance element and a connector. The resistance element is connected in parallel with the connector, the resistance element comprises an NTC thermistor, the resistance value of the NTC thermistor is decreased with temperature rise, and the connector is connected through heat control of a resistance combination element. The surge current protection element for the frequent starting device can maintain efficient surge suppression capacity in a circuit frequency starting condition.

Description

technical field [0001] The invention belongs to the field of electronic devices, in particular to a surge current protection element for frequently starting devices. Background technique [0002] When the circuit is powered on, a relatively large surge current is often generated. The current mainstream protection method is to use a power NTC thermistor to suppress the surge current. However, in the case of frequent starts, due to the material characteristics of the power NTC thermistor, it is difficult to return to the initial low temperature in a short time, so it cannot play a good role in surge suppression. However, at low temperatures, it is difficult to start the circuit normally due to the excessive resistance of the thermistor material. Contents of the invention [0003] In order to solve the above-mentioned problems, the present invention has developed a surge current protection element for frequently starting devices. The element is based on the previous NTC ther...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02H9/00H02H9/02H01C13/02H01C7/13
CPCH02H9/005H02H9/02H01C13/02H01C7/13
Inventor 汪洋
Owner NANJING SHIHENG ELECTRONICS
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