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- Normally closed glass reed switches
- Heywood Jablome
April 17, 2006, 11:54 am
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Just looked at RS, Jaycar and Dick Smiths,
I'm looking for a glass reed switch that is normally closed. Can't seem to
find a supplier that has any for a decent price.
I need 50 of them and while most people dont stock them, RS wants over $4
each. Im too tight to pay that much as I can see that Electus has the
normally open variety well under a dollar. (but no normally closed ones)
Anyone have any other suppliers they care to share?
Re: Normally closed glass reed switches
Thanks Kevin but the search continues. The Dick Smith reed switch is
normally closed in the presence of a magnet. To me this means that it is
normally open in its normal state (form A). Some may disagree with my
In any case I need one that stays closed when not in the presence of a
magnetic field, and opens when a magnet is brought towards it. This is a
little harder to find but its not impossible. I purchased a Form C reed
today from RS components. At over $6 it was OK for one prototype but not
good enough for quantities of 50 plus. (they only give you a dollar off at
So the question remains where I can get a normally closed glass reed switch
at a decent quantity price sub $1.
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