Arc-quenching device for direct current switch
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United States of America Patent
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Aug 10, 2021
Grant Date -
Sep 12, 2019
app pub date -
Oct 20, 2017
filing date -
Jan 13, 2017
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Abstract
An arc quenching device, which is highly reliable, small-sized, and inexpensive, includes: a semiconductor switch connected in parallel to a first switch which is mechanical; a constant voltage circuit configured to use a voltage which is generated between both contact points of the first switch to output a voltage which causes the semiconductor switch to turn on; and a second timer circuit configured to cause the semiconductor switch to turn off after a predetermined time has elapsed since the semiconductor switch turned on.
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