公开(公告)号：US09898911B2

公开(公告)日：2018-02-20

申请号：US15592830

申请日：2017-05-11

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Hyun-Tak Kim ,  Bongjun Kim ,  Jong Chan Park

IPC: G08B17/06 ,  H01C7/04 ,  H01H37/32 ,  H01L27/02 ,  H01L27/06 ,  H01L49/00 ,  H02H9/04

CPC classification number: G08B17/06 ,  H01C1/02 ,  H01C7/047 ,  H01H37/32 ,  H01L27/0248 ,  H01L27/0647 ,  H01L49/003 ,  H02H9/045

Abstract: The inventive concept provides MIT devices molded by clear compound epoxy and fire detecting devices including the MIT device. The fire detecting device is supplied with a power source from a power control device. The fire detecting device includes a MIT device including a MIT chip molded by a clear compound epoxy, a diode bridge circuit supplied with the power source from the power control device for providing a non-polar power source, a notice circuit supplied with the non-polar power source from the diode bridge circuit for warning of a fire alarm in response to a detecting signal from the MIT device, and a stabilization circuit for maintaining the detecting signal for a certain period.