Unlock instant, AI-driven research and patent intelligence for your innovation.

Surge protection apparatus having embedded fuse

A surge protection, fuse technology, applied in emergency protection circuit devices, emergency protection circuit devices for limiting overcurrent/overvoltage, resistors with positive temperature coefficients, etc., can solve damage, crowbar equipment short circuit Conditions, component exposure, etc.

Active Publication Date: 2019-04-02
LITTELFUSE SEMICON WUXI
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the current flowing exceeds the maximum on-state current rating, crowbar devices such as the SIDACtor can enter a permanent short circuit condition, exposing the protected components to potential damage

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Surge protection apparatus having embedded fuse
  • Surge protection apparatus having embedded fuse
  • Surge protection apparatus having embedded fuse

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0014] The present embodiments will now be described more fully hereinafter with reference to the accompanying drawings in which exemplary embodiments are shown. The Examples are not to be construed as limited to the examples set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope to those skilled in the art. In the drawings, like numerals refer to like elements throughout.

[0015] In the following description and / or claims, the terms "on", "overlying", "on" and "over" may be used in the following description and / or claims used in the book. "On," "overlying," "on," and "over" may be used to indicate that two or more elements are in direct physical contact with each other. Also, the terms "on," "overlying," "on" and "over" may mean that two or more elements are not in direct contact with each other. For example, "over" may mean that one element is above another element without contactin...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A surge protection apparatus may include an input terminal; an output terminal, the output terminal electrically coupled to the input terminal;a ground terminal, the ground terminal electrically coupled to the input terminal and output terminal:;a positive temperature coefficient (PTC) fuse, the PTC fuse connected in electrical series between the input terminal and output terminal; a crowbar device, the crowbar device electrically connected to the ground terminal and output terminal, wherein the crowbar device is in electrical series with the PTC fuse between the input terminal and ground terminal; and a central frame portion, the central frame portion electrically coupled to the input terminal, output terminal and ground terminal, wherein the crowbar device is disposed on a first side ofthe central frame portion and the PTC fuse is disposed on a second side of the central frame portion, opposite the first side.

Description

technical field [0001] Embodiments relate to the field of surge protection devices, and more particularly to overvoltage protection devices and resettable fuses. Background technique [0002] Surge protection devices include overvoltage protection devices used to protect components, devices or systems from damage due to overvoltage fault conditions, and fuses used to protect components, devices or systems from excessive current flow. In the field of overvoltage protection devices, diodes such as Zener diodes, thyristors and ( is a trademark of Littelfuse Corporation). One advantage provided by crowbar devices, such as silicon controlled rectifiers (SCRs) and SIDACtors, is the ability to quickly respond to overvoltage events and clamp the voltage to acceptable levels. In particular, when the current flowing through the SIDACtor exceeds the switch current, the SIDACtor acts as a "crowbar" and simulates a short circuit condition. Unlike traditional transient voltage suppr...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H02H9/04
CPCH02H9/042H01C7/02H01C7/00H02H9/026
Inventor 吕奎良石磊张兆易秦传芳
Owner LITTELFUSE SEMICON WUXI