0
\$\begingroup\$

I need an on/off type switch (spst) on a device that will be subject to high, continuous centrifugal force loads (500-1000G or 5000-10000 m/s2)).
Will your everyday, off-the-shelf switch handle this?

Are there certain types of switch (sliding, toggle, push on/off) that will likely handle the forces better? It seems not many datasheets have such a rating.

I'm interested in both quantitative and/or experienced-based answers (i.e. "here's a datasheet" or "well, I've used this in this situation before"). EE Stackexchange seemed like the best place to ask this.

EDIT: The switch will be used to turn on/off a wireless data device. The switch will effectively just be pulling an enable pin high, so it's handling 3.3 to 5V, 1-10mA. My concern rests mostly with undesired switching on/off due to the forces involved. Am I unduly concerned?

EDIT: I talked with a friend, and she happens to be involved in rocketry - another electronics in high-G situation (although 50-100G are more typical). She mentioned that for switches, Rotary, screw, or just twisting the wires together are considered reliable.

I'll probably go with a screw switch unless someone suggests something else.

\$\endgroup\$
13
  • \$\begingroup\$ Just a dry logic switch? And in what direction is the acceleration relative to the mounting plane? \$\endgroup\$
    – DKNguyen
    Jul 9, 2019 at 1:23
  • \$\begingroup\$ would you consider a ROTARY switch? \$\endgroup\$ Jul 9, 2019 at 2:12
  • \$\begingroup\$ @DKNguyen Yes, it won't be passing much current. Effectively just bringing a pin high. \$\endgroup\$
    – IronEagle
    Jul 9, 2019 at 3:58
  • 1
    \$\begingroup\$ Maybe you can save the state of the switch before it starts rotating? \$\endgroup\$
    – Wesley Lee
    Jul 9, 2019 at 21:28
  • 1
    \$\begingroup\$ Mounting the switch such that all moving parts move perpendicular to the radius of rotation seems like a reasonable option. That way the forces will all be directed perpendicular to the switch's moving parts. Rotary switches would probably make this easy, or right-angle slide switches. \$\endgroup\$
    – Hearth
    Jul 9, 2019 at 22:18

0

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Browse other questions tagged or ask your own question.