Thanks for the insight. Thanks to all who responded to my question. It shows how
truly diversified this list is. Once again, the list meets the challenge,
thanks, Brad
Bill Miller wrote:
> Brad,
>
> That kind of switch is called a "reed" switch. A magnet pulls it in from
> one side (open) to the close side. You should be able to pick them up at
> any radio shack/electronics store. Burglar alarm door switches are the same
> thing: one reed switch (mounted on the frame), one magnet (mounted on the
> door).
>
> Oh, as an aside, those things are generally VERY low current. You will most
> likely have to use it to pull in a relay to turn on your motor or whatever.
>
> Bill
>
> -----Original Message-----
> From: owner-spridgets@autox.team.net
> [mailto:owner-spridgets@autox.team.net]On Behalf Of Brad Fornal
> Sent: Monday, November 13, 2000 9:07 AM
> To: WFO Herb
> Cc: Mjsprite@aol.com; Spridgeteers
> Subject: Re: magnet on/off switch
>
> I have been looking to make an underwater DPV (diver propulsion vehicle).
> The
> power switch you see on the store models is enclosed within the airtight
> handle.
> You wear a velcro bracelet with a magnet stitched into it, and when you put
> your
> hand on the handle, the magnet closes the switch inside, this then gives the
> unit
> power. Has anyone ever heard of these, or better yet, knows a source??
> Brad (back from drift diving and feelin' even more lazy!)
>
> WFO Herb wrote:
>
> > ....moves the internal magnet closer to the surface when you twist the
> knob.
> >
> > Mjsprite@aol.com wrote:
> >
> > > Hey everyone,
> > > I bought a magnetic stand for my dial indicator to use while
> blueprinting a
> > > 1380 engine. For the life of me, I can't figure out how this magnet
> works. A
> > > simple turn of the switch creates a very powerful magnet in the base.
> Turn
> > > the switch back and there's no attraction whatsoever. No batteries or
> > > electricity. This really intrigues me. Can anyone explain how this
> works?
> > > Mike
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