A small maget can be used to move apart or force together electrical contacts. This can be placed inside a protective case as long as the case material doesn't block the magnetic field. These small "Reed" Relays can be very low cost, and reliable, if used propery.
Doug LaRue says:
The magnets are supposed to be positioned with their poles parallel to the direction of the reed switch. Everything I'd seen and understood over the years had one pole of the magnet pointed at the reed switch body and that is wrong. With the poles parallel to the switch body/leads it will trigger and release reliably in the same location. If you recall what I said previously, I was finding the reed switches to trigger and release at different positions.
Making a reed relay latch on or off with a few simple
|file: /Techref/io/reedrelays.htm, 1KB, , updated: 2020/9/1 09:41, local time: 2023/3/21 14:20,
|©2023 These pages are served without commercial sponsorship. (No popup ads, etc...).Bandwidth abuse increases hosting cost forcing sponsorship or shutdown. This server aggressively defends against automated copying for any reason including offline viewing, duplication, etc... Please respect this requirement and DO NOT RIP THIS SITE. Questions?|
<A HREF="http://www.piclist.com/Techref/io/reedrelays.htm"> Reed Relays</A>
|Did you find what you needed?|
PICList 2023 contributors:
o List host: MIT, Site host massmind.org, Top posters @none found
- Page Editors: James Newton, David Cary, and YOU!
* Roman Black of Black Robotics donates from sales of Linistep stepper controller kits.
* Ashley Roll of Digital Nemesis donates from sales of RCL-1 RS232 to TTL converters.
* Monthly Subscribers: Gregg Rew. on-going support is MOST appreciated!
* Contributors: Richard Seriani, Sr.
Welcome to www.piclist.com!