HOME  |  NEWS  |  BLOGS  |  MESSAGES  |  FEATURES  |  VIDEOS  |  WEBINARS  |  INDUSTRIES  |  FOCUS ON FUNDAMENTALS
  |  REGISTER  |  LOGIN  |  HELP
Feature
Electronics & Test

Reed Relays Switch in Time

NO RATINGS
View Comments: Newest First|Oldest First|Threaded View
Jon Titus
User Rank
Blogger
Reed relays reconsidered
Jon Titus   7/1/2011 11:55:46 AM

John Beigel, a consultant for MEDER electronic, a manufacturer of reed relays, took exception to my reed-relay bounce-time data, obtained from a Keithley Instruments handbook, and responded, "The vast majority of reed relays are single pole single throw (SPST) normally open contacts. The majority of the contacts close completely in approximately 0.5 milliseconds. This includes bounce. Bounce typically lasts about 100 to 150 microseconds. On new reed relays the operate time is typically 100 microseconds max with a bounce time of 50 microseconds maximum. The bounce time called out by Mr. Titus--'a few milliseconds'--is simply not true."

 

I obtained sample relays from MEDER and measured relay-bounce times of about 50 microseconds.  But other electro-mechanical characteristics as well as test-and-measurement applications also govern the use of relays.  Read my follow up column set for the August 2011 issue of Design News. --Jon Titus



Partner Zone
Latest Analysis
The Industrial Internet of Things may be going off the deep end in connecting everything on the plant floor. Some machines, bearings, or conveyors simply donít need to be monitored -- even if they can be.
Wind turbines already are imposing structures that stretch high into the sky, but an engineering graduate student at the University of Notre Dame wants to make them even taller to reduce energy costs and improve efficiency.
Ray Zinn, Silicon Valley's longest-running CEO, shares some of his thoughts on innovation, procrastination, and why you shouldn't put customers first.
Researchers at American University have produced chemically active structures that, not unlike living things, can actually do things on their own without an external power.
Former DARPA official and Google executive Dr. Kaigham Gabriel believes sensor companies think too much like suppliers and need to bring their products closer to the consumer.
More:Blogs|News
Quick Poll
The Continuing Education Center offers engineers an entirely new way to get the education they need to formulate next-generation solutions.
SEMESTERS: 1  |  2  |  3  |  4  |  5  |  6 |  7 | 8 | 9 | 10


Focus on Fundamentals consists of 45-minute on-line classes that cover a host of technologies. You learn without leaving the comfort of your desk. All classes are taught by subject-matter experts and all are archived. So if you can't attend live, attend at your convenience.
Next Course June 28-30:
Sponsored by Proto Labs
Learn More   |   Login   |   Archived Classes
Twitter Feed
Design News Twitter Feed
Like Us on Facebook

Technology Marketplace

Copyright © 2016 UBM Canon, A UBM company, All rights reserved. Privacy Policy | Terms of Service