The more recent AltAcc, uses an all metal screw terminal for a switch.
Like these: http://www.keyelco.com/kec/pdfs/p39.pdf
The older AltAcc used a screw switch with a plastic base. I don't have
a source for these, but I think the newer part is better anyway.
Binder Design wrote:
I think he's looking for a real switch. Something that you could stick a
screwdriver through a hole in an altimeter bay, and screw to close. This
kind of terminal requires you to have full access to wrap the wire around
It's clear that you haven't seen an AltAcc 2C, which uses a screw
terminal as a switch. The terminal is positioned over an empty(*) pad
on the PCB, when the screw is turned in, the point contacts the pad and
completes the circuit. It's a very clever alternative use for a common
part. The result it exactly what he's looking for, something you could
stick a screwdriver through a hole in the altimeter bay.
(*) the pad isn't completely empty, there's a large blob of solder there
to provide a "landing zone" for the screw.
I tried to find those about a year ago, also. Never did find the original
source. The closest I got was that Electronic Goldmine
http://www.goldmine-elec.com/ used to sell them for 30 cents. Last year,
they were on their sold-out list, but now I can't find them at all. No way
I would pay $2 each for them, even for a couple.
Make your own real simply.
Take a piece of double sided PCB...
Drill a hole..
Solder a brass #6 nut to one side
Solder one wire each side of PCB
when screw is turned down circuit will be completed,
Just make sure through hole is counter sunk a little on the screw side
so the shaft does not touch copper on the screw side...
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