Electromagnetic miniature relay

Details Electromagnetic miniature relay Electromagnetic miniature relay

H - Electricity

01

H

306/50

H01H 50/16 (2006.01) H01H 51/00 (2006.01) H01H 51/22 (2006.01)

Patent

CA 1203824

Abstract of Disclosure A relay with a contact making independent from environ- mental conditions with two hermetically sealed contact pills is described. Each contact pill comprises a switching-over contact and a diaphragm made of electrically and magnetically conducting material which diaphragm is the movable member adhering on corresponding contact poles due to the magnetic flux caused by a permanent magnet and flowing through the core of a drive coil. To change the contact condition of the relay it is sufficient to produce a current pulse through the drive coil causing a control flux of a magnitude which exceeds that of the permanent magnet flux by a small amount only because the two fluxes add their strength when the change- over operation is initiated. Due to this adding the needed drive power is so small that a direct driving by TTL-circuits is possible. By other arrangements of the permanent magnet within the magnetic circuit monostable relays can also be realized.

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