Wide range magnetically biased reed switch

Details Wide range magnetically biased reed switch Wide range magnetically biased reed switch

1978-09-05

1980-07-22

Broome, Harold

Electricity: magnetically operated switches, magnets, and electr

Electromagnetically actuated switches

Vacuum or hermetically sealed type

335179, H01H 5127

Patent

active

042142202

ABSTRACT:
A normally closed reed relay switch is provided having an enhanced ratio of reclosure to open current. A permanent magnet is used to bias closed a normally open reed relay switch. An electrical coil is placed around one end of the reed relay switch so as to offset the flux distribution of the permanent magnet thereby allowing the switch to assume an open position. The position of the magnet and the coil with respect to the reed relay switch results in an enhanced ratio of reclosure to open current on the order of 10 to 1.

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