Latching Relays
Latching relays are also called “keep”, “impulse” or “stay” relays. It has two relaxed states – bistable. It is bistable because when current is switched off, it remains in its last state. This can be achieve by two methods.
1. A solenoid operating a ratchet and cam mechanism.: The first pulse to the coil turns the relay on and the second pulse turns it off
2. By having two opposing coils with an over-center spring or permanent magnet to hold the armature and contacts in position while the coil is relaxed : a pulse to one coil turns the relay on and a pulse to the opposite coil turns the relay off. This type of relay has the advantage that one coil consumes power only for an instant, while it is being switched, and the relay contacts retain this setting across a power outage.
Latching relays are widely used because conventional relays need constant supply of voltage or power but latching relays dont.
Latching relays are not always that easy to find . You may find them in ebay but this ( www.sherburn.com )online site exclusively deals with latching relays products. I found it very useful
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40 Comments
1.
herb grinders london From 
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They give a great smell when in action. Enjoying your blog, keep it up mate
2.
bradstone roof tiles From 
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Useful link, thanks for sharing. Nice website also and hope it grows and grows for you.
3.
skip hire sale From 
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4.
renewable energy ireland From 
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Good article, we come across a lot of equipment like this. Thanks for sharing your knowledge
5.
solar panels manchester From 
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Excellent article, working in electronics before moving into the renewables sector has certainly helped us a lot make the transition and articles like these help a lot also, thanks.
6.
solar panels bedford From 
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Brilliant info, we’ll certainly be sharing this with some of our clients.
7.
pool builders sussex From 
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Thanks for the interesting article, we often use electrical components wtih some of our installations. Thanks for sharing.
8.
swimming pool kits From 
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Fascinating read, you offer insightful and important information. Thanks, nice blog too.
9.
scrap metal liverpool From 
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Spot on with this article, very useful. We scrap a lot of components, well done with this blog.
10.
seslieses From 
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Mac OS X on 01. October 2011 at 8:28 pm
Disposing of items such as these when they’ve hit the end of their life cyucle can be problematic, other ways that lead to the recycling of such tools should be tested and measured. Great blog, for skip hire worsley please give us a shout
11.
girls hot photos From 
(CHINA)
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Latching Relays very useful
12.
Night vision infrared illuminator 95.5.2.200 not found
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We use latching relays for our night vision infrared illuminators.
13.
John Barnett From 
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Very interesting article, love this article.
14.
Darling From 
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I don’t even understand the very concept behind it back in my college days. We use to have a lot of these in the boardroom under the EE curriculum. I wish I was just as bright then as I was now.
15.
Search engine optimisation From 
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Useful and informative article, electrical items will always be necessary just like us our SEO people! Nice blog
16.
personal trainer blackpool From 
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Great stuff, thanks for sharing your insights.
17.
Lee From 
(AUSTRALIA)
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Latching relays are one of those machinery which are really hard to find. Thank you for the ebay store link. I was looking for something like this.
18.
Toko Baju Muslim 180.253.125.134 not found
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This site has lots of very useful information on it! Thanks for sharing it with me.
19.
electrician kings heath From 
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Brilliant and insightful information. I use a lot of relays and your details are spot on.
20.
seo companies manchester From 
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Fantastic blog, you cover many diverse topics really well
21.
Harry 182.71.22.106 not found
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Awesome, seriously awesome.Great presentation.Thanks for sharing.It is very useful.
22.
branded water 182.71.22.106 not found
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Great way of explaining, i loved way of drawing, pictures always more helpful to make understand, sure in future want to follow it..
23.
high quality watches From 
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You had been so considerate to permit me to be one of those to profit from your handy information. Please recognize how great I appreciate it.
24.
americki plakari 109.92.201.49 not found
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Very interesting article, love this article.
25.
Fotoselli From 
(TURKEY)
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OK. What about latching walves?
26.
Resim Kursu From 
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Thanks, nice article and nice blog too.
27.
burnham boilers From 
(SINGAPORE)
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Thank you sharing these Latching relays products. They are very helpful to me.
Ragul,
burnham boilers
28.
Rca ieftin From 
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Nice article. Very useful information.
29.
kabus From 
(TURKEY)
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We use latching relays for our night vision infrared illuminators. . .
30.
Edward From 
(AUSTRALIA)
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Fedora Linux on 30. December 2011 at 12:46 pm
I too relied on ebay for getting latching relays.But now it seems that I can get it from the site that you have mentioned.
Thanks for sharing this valuable info.
Used Class B RV
31.
andy@Atlanta appliance repair From 
(UNITED STATES)
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I never found latching relays that hard to find. used to buy a lot of them to fix stuffed animal games (crane games).
32.
Felipe Sparks From 
(UNITED STATES)
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Launch relays are fairly easy to find thanks to google’s search engine. But thanks for the link. I’d recommend comparing prices though.
33.
Vance Miller From 
(UNITED STATES)
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Great resource link for latching relays. I’ve been able to get a few off of ebay but have had a hard time finding them used from other “second hand electronic sites.”
34.
sikis From 
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aslinda bazi seylerin olabiliritesi var ama neden cozum bulmuyorlar bilemiyorum bu durumda bir cozum getirilmesi gerekli buradan yetkililere sesleniyorum.
35.
Kenan denizci From 
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Great resource link for latching relays.
36.
Limon Ahmed From 
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Windows XP on 15. February 2012 at 4:32 pm
This a great Post to me. I never hire about Latching relays before read your post. I just Read it from your Post and it is really very interesting to me.
Thanking you for sharing the Awesome post.
37.
Firma Rehberi Sc From 
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Hadi Bakalım Güzel Bu
38.
erotic calendars From 
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Useful article on a piece of technology we’ll always require.
39.
beautytips 182.177.178.206 not found
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thanks for the information i will go and take a look for it.
beautytips
40.
breaking bad From 
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its great thank you for content