Old Relays anybody? |
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Old Relays anybody? |
bd1308 |
Jan 27 2005, 01:17 PM
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#1
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Sir Post-a-lot Group: Members Posts: 8,020 Joined: 24-January 05 From: Louisville,KY Member No.: 3,501 |
I am looking for some old relays I could use to look at /fix /tinker with? Anybody got a few they could send me?
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Joe Ricard |
Jan 27 2005, 02:00 PM
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#2
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CUMONIWANNARACEU Group: Members Posts: 6,811 Joined: 5-January 03 From: Gautier, MS Member No.: 92 |
Pm me your address.
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bd1308 |
Jan 27 2005, 02:21 PM
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#3
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Sir Post-a-lot Group: Members Posts: 8,020 Joined: 24-January 05 From: Louisville,KY Member No.: 3,501 |
Joe you got mail! I cant wait to get some of these old buggers to play with (IMG:http://www.914world.com/bbs2/html/emoticons/welder.gif)
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bd1308 |
Jan 27 2005, 06:09 PM
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#4
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Sir Post-a-lot Group: Members Posts: 8,020 Joined: 24-January 05 From: Louisville,KY Member No.: 3,501 |
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Mueller |
Jan 27 2005, 06:23 PM
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#5
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914 Freak! Group: Members Posts: 17,146 Joined: 4-January 03 From: Antioch, CA Member No.: 87 Region Association: None |
what the heck are you doing with them to need more than 1 or 2 to "play" with?? (IMG:http://www.914world.com/bbs2/html/emoticons/smile.gif) not much inside of them, when they do go bad it's normally due to rust, or pitted contact points
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bd1308 |
Jan 27 2005, 06:30 PM
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#6
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Sir Post-a-lot Group: Members Posts: 8,020 Joined: 24-January 05 From: Louisville,KY Member No.: 3,501 |
i was thinking about them. I think I could fix them.....or at least I will have a project while my 914 is in louisville getting fixed or something (IMG:http://www.914world.com/bbs2/html/emoticons/headbang.gif) (IMG:http://www.914world.com/bbs2/html/emoticons/sad2.gif)
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Dave_Darling |
Jan 27 2005, 07:49 PM
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#7
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914 Idiot Group: Members Posts: 14,991 Joined: 9-January 03 From: Silicon Valley / Kailua-Kona Member No.: 121 Region Association: Northern California |
Here's a link to an expanded version of my "914 electrical 101" presentation from some of the Rambles in years past: http://members.rennlist.com/damp_dave/electric.html
Pics of the outside of and inside of a relay: (IMG:http://members.rennlist.com/damp_dave/Fig_4.JPG) (IMG:http://members.rennlist.com/damp_dave/Fig_5.JPG) (IMG:http://members.rennlist.com/damp_dave/Fig_6.JPG) (IMG:http://members.rennlist.com/damp_dave/Fig_7.JPG) (IMG:http://members.rennlist.com/damp_dave/Fig_8.JPG) (IMG:http://members.rennlist.com/damp_dave/Fig_9.JPG) Hopefully this helps you understand what's going on in there before you start tearing the relays apart. --DD |
bd1308 |
Jan 27 2005, 07:57 PM
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#8
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Sir Post-a-lot Group: Members Posts: 8,020 Joined: 24-January 05 From: Louisville,KY Member No.: 3,501 |
Dave, thanks for the pictures. Yeah folks, I'm gonna try to see if some of these guys can work again....so we could have a few cheap relays for extras. I am also building a relay tester too! So if you have any lying around, I sure could use them. I may not be able to get them to work....i'm mainly doing this out of boredom....this is what i do when i'm bored instead of getting into trouble like most college kids do (IMG:http://www.914world.com/bbs2/html/emoticons/beer3.gif)
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Dave_Darling |
Jan 28 2005, 06:21 PM
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#9
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914 Idiot Group: Members Posts: 14,991 Joined: 9-January 03 From: Silicon Valley / Kailua-Kona Member No.: 121 Region Association: Northern California |
I have some, but don't have access to them right now... The move (and related stuff) has really gotten things pretty messed up...
--DD |
scruz914 |
Jan 28 2005, 07:24 PM
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#10
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Senior Member Group: Members Posts: 815 Joined: 26-February 04 From: Santa Cruz, CA Member No.: 1,724 |
A question I have been thinking about is: Could the function of the 914 relay be reproduced as a solid state unit? I am not an engineer but I am pretty sure it can be done. Not sure how practical or cost effective it would be. One of the reasons I layed out the relay board that I just posted in another thread is to figure out how it could be reconstructed with soft shell connectors and solid state relays.
-Jeff |
914GT |
Jan 28 2005, 07:41 PM
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#11
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Senior Member Group: Members Posts: 1,100 Joined: 11-October 04 From: Tucson Member No.: 2,923 Region Association: Southwest Region |
Yes, it could be done. Power MOSFETs would work. Since it's DC switching it's not too difficult. But mechanical relays are pretty rugged. A solid-state design needs overvoltage and short-circuit protection. |
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