I don't know if you could use this switch with your 1.5" length, and if the
slider switch is a hard requirement. But these are pretty widely used in
the amateur realm and are pretty vibration resistant. I've also used quite
a few of them.
Your best choice for vibration resistant switches are usually either a
screw type switch like Andre posted above or a rotary switch of some sort.
https://www.digikey.com/en/products/detail/schurter-inc/0033-4501/641120
Another option for you is to just use a standard slider switch and make a
"ON" position cover for it that goes over the switch and prevents it from
moving at all from the ON position.
-Wyatt
On Tue, Oct 13, 2020 at 1:28 PM André <andregrey@xxxxxxxxx> wrote:
Hi Fred
If you don't absolutely need double pole, I've used switches like this
before:
https://www.fingertechrobotics.com/proddetail.php?prod=ft-mini-switch
They seem like they would be very vibration resistant. You could also
easily make your own that was effectively double pole, the poles just
wouldn't get switched at the same time.
Andre
On Tue, Oct 13, 2020 at 4:30 PM Fred S <fredschaffermd@xxxxxxxxx> wrote:
Craig and Henry,
Thank you for your recommendations and information. With the links
offered, I'll do some further researching and again, I thank you for the
solid lead and ancillary info.
Regards,
Fred
On Mon, Oct 12, 2020 at 10:49 PM Craig Strudwicke <cstrudwicke@xxxxxxxxx>
wrote:
Hi Henry
Yes that is true although the preload on those is high and mass very low
so acceleration would need to be very high indeed to lift them (test to be
conducted I guess)
I have made a non-conductive pull pin for this purpose for the issue as
you have raised.
Currently used as part of a 'smart power switch/isolator'
https://drive.google.com/file/d/19FaHq-48nPNg3JjtQ81lwxwxtLLZbZ9c/view?usp=sharing
https://drive.google.com/file/d/1eNbwdMMbULklsv731cBbKUgtkwLaWgAE/view?usp=sharing
https://drive.google.com/file/d/1j3S3q7m_1IiFheATdZRDDULfNqFaNdkS/view?usp=sharing
On Tue, Oct 13, 2020 at 9:06 AM Henry Spencer <hspencer@xxxxxxxxxxxxx>
wrote:
On Tue, 13 Oct 2020, Craig Strudwicke wrote:
...a DPDT slide switch that is vibration resistant...
Any chance you could use something like this?
https://au.rs-online.com/web/p/jack-plugs-sockets/9131018/
Spring-loaded contacts like that can bounce under vibration, I believe,
although it might take rather a lot.
A potentially more significant problem with using phone/audio jacks is
that there can be brief shorts between adjacent *sets* of contacts as
the
plug is inserted or withdrawn (unless the plug is purely a pull pin and
is
entirely non-conductive, e.g. plastic). Be sure your circuit can
handle
that without loud surprises!
Henry