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Patent Searching and Data


Title:
PROTECTIVE RELAY
Document Type and Number:
WIPO Patent Application WO2002017456
Kind Code:
A8
Abstract:
A protective relay is provided to protect circuitry against reverse battery polarity or load dump, wherein a relay coil is operatively connected to a contact switch and is fed by a reverse bias diode (which may be a Zener diode) such that the relay coil opens the switch contact when the diode is energized to protect the circuitry; wherein the protective relay optionally includes a positive temperature coefficient resistor or a current resource to protect the relay coil from overheating.

Inventors:
DE OLIVEIRA ROBERTO PINTO
Application Number:
BR0100106W
Publication Date:
April 22, 2004
Filing Date:
August 24, 2001
Export Citation:
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Assignee:
TYCO ELECTRO ELECTRONICA LTDA (BR)
International Classes:
H02H5/04; H02H11/00; H02H9/02; (IPC1-7): H02H11/00
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