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Patent Searching and Data


Title:
PROTECTIVE CIRCUIT AGAINST ABNORMAL VOLTAGE
Document Type and Number:
Japanese Patent JPS5280439
Kind Code:
A
Abstract:

PURPOSE: The idea is to protect such instruments as fire alarm, exhaust smoke prevention controller etc. from abnormal voltage when such abnormal voltage from power source is mistakingly connected to any of them.


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Inventors:
MAMIYA HIROAKI
KAMORI TAKEYUKI
Application Number:
JP15608675A
Publication Date:
July 06, 1977
Filing Date:
December 27, 1975
Export Citation:
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Assignee:
MATSUSHITA ELECTRIC WORKS LTD
International Classes:
H02H9/04; H02H3/20; H02H7/04; (IPC1-7): H02H3/20; H02H9/04
Foreign References:
US3368110A1968-02-06