Invention Grant
- Patent Title: Fuse failure display
- Patent Title (中): 保险丝故障显示
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Application No.: US14422160Application Date: 2013-08-09
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Publication No.: US09324532B2Publication Date: 2016-04-26
- Inventor: Hans-Peter Hudetz
- Applicant: PHOENIX CONTACT GMBH & CO. KG
- Applicant Address: DE Blomberg
- Assignee: PHOENIX CONTACT GMBH & CO. KG
- Current Assignee: PHOENIX CONTACT GMBH & CO. KG
- Current Assignee Address: DE Blomberg
- Agency: Knobbe Martens Olson & Bear LLP
- Priority: DE102012107525 20120816
- International Application: PCT/EP2013/066760 WO 20130809
- International Announcement: WO2014/026933 WO 20140220
- Main IPC: G08B21/00
- IPC: G08B21/00 ; H01H85/32 ; H02H3/04 ; H01H85/02

Abstract:
Circuitry for fuse failure display for monitoring the trip status of a fuse is disclosed, wherein a light-emitting diode is provided in order to display the trip status of the fuse, which light-emitting diode is arranged in a current path parallel to the fuse. If the fuse is not tripped, the parallel current path has a high resistance in relation to the resistance across the fuse, such that the current across this current path is insufficient for operation of the light-emitting diode. If the fuse is tripped, this parallel current path has a low resistance in relation to the resistance across the fuse, such that the current across this current path is sufficient for operation of the light-emitting diode, wherein a current-limiting device for limiting the current across the light-emitting diode and a voltage-limiting device for limiting the voltage across the tripped fuse are also provided.
Public/Granted literature
- US20150228435A1 FUSE FAILURE DISPLAY Public/Granted day:2015-08-13
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