relay system using momentary switches
Printed From: the12volt.com
Forum Name: Relays
Forum Discription: Relay Diagrams, SPDT Relays, SPST Relays, DPDT Relays, Latching Relays, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=81408
Printed Date: May 15, 2025 at 11:21 AM
Topic: relay system using momentary switches
Posted By: eeuler35thss
Subject: relay system using momentary switches
Date Posted: August 09, 2006 at 7:43 PM
i need a to make a relay system using momentary switches. i would like to to where i have lets say 5 switches and when i press one in it turns on and stays on, but if i press another one of those switches i want the first switch system to turn off and that second one to turn on. how would i go about doing this. can someone draw me up a diagram so that this will work. thanks in advance.
Replies:
Posted By: eeuler35thss
Date Posted: August 13, 2006 at 12:18 PM
anyone know how to do this without relays? i just want to finish my project.
Posted By: KPierson
Date Posted: August 14, 2006 at 9:56 AM
What kind of project is it? It could be done fairly easily with a microcontroller, but doing it with relays alone would require a lot of relays and wouldn't be practical for a car. ------------- Kevin Pierson
Posted By: eeuler35thss
Date Posted: August 14, 2006 at 12:59 PM
its for a display thats going to be able to move easily for shows.
Posted By: hotwaterwizard
Date Posted: August 19, 2006 at 9:58 PM
You could just use a cam switch. Or interlocking push switches. https://www.sphere.bc.ca/test/tek-parts/tekparts9.html  
------------- John DeRosa (Hotwaterwizard)
Stockton California
When in doubt, try it out !
Posted By: eeuler35thss
Date Posted: August 20, 2006 at 8:47 PM
i thought about those but seems like the biggest they can go are 5 switches. is this true?
Posted By: KPierson
Date Posted: August 20, 2006 at 9:20 PM
How many are you looking to do?
------------- Kevin Pierson
Posted By: hotwaterwizard
Date Posted: August 20, 2006 at 11:09 PM
Sure they do. Finding a supplier? Well that is another issue. https://www.wescospec.com/products-components.htm 
https://www.ceiecz.com/a12.php3?cpid=2393&cpxlmc=&cpxlbh=003001005&no=&page= 
------------- John DeRosa (Hotwaterwizard)
Stockton California
When in doubt, try it out !
Posted By: eeuler35thss
Date Posted: August 22, 2006 at 1:48 AM
thanks. thats not really the rounte i wanted to go for because i wanted all the buttons to be next to each radio and speaker setup, but this seems to be the only way i can find to do it. i know that it can be done but not sure if there is a control unit or something to make it work how i sorta pictured in my head.
Posted By: KPierson
Date Posted: August 22, 2006 at 8:16 AM
How many differeing switches do you want?
------------- Kevin Pierson
Posted By: hotwaterwizard
Date Posted: August 22, 2006 at 8:34 AM
Why didn't you say you were making a display? I'm a poet and didn't know it. Now I understand. ------------- John DeRosa (Hotwaterwizard)
Stockton California
When in doubt, try it out !
Posted By: KPierson
Date Posted: August 22, 2006 at 8:42 AM
He said he was in the 4th post! I can rhyme too, but I don't like to boast! ------------- Kevin Pierson
Posted By: hotwaterwizard
Date Posted: August 22, 2006 at 8:56 AM
Now I feal Dumb.  Not enough coffee this morning. It is about 6:30 am. Hold off on the switches. I think we can do this with relays. Here is a basic circuit we will start with. I made this a couple of years ago.  
------------- John DeRosa (Hotwaterwizard)
Stockton California
When in doubt, try it out !
Posted By: hotwaterwizard
Date Posted: August 22, 2006 at 9:21 AM
Here are a couple of Digital switches in the mean time. Something to think about One switch to select up to 10 different Stereos. https://www.geocities.com/tjacodesign/touch/touch.html 
https://www.siliconchip.com.au/cms/A_105741/article.html 
------------- John DeRosa (Hotwaterwizard)
Stockton California
When in doubt, try it out !
Posted By: eeuler35thss
Date Posted: August 22, 2006 at 1:22 PM
i like the last diagram. where do i get those parts at? such as the ic2 and the ic1's? thanks for the help
Posted By: hotwaterwizard
Date Posted: August 22, 2006 at 10:07 PM
Did you read the article? The Diagram only showes 4 but you copy the pattern to get up to 10 outputs. You can get the parts at www.mouser.com or www.digikey.com or www.mcmelectronics.com ------------- John DeRosa (Hotwaterwizard)
Stockton California
When in doubt, try it out !
Posted By: eeuler35thss
Date Posted: August 23, 2006 at 4:36 PM
yeah, i read that i can do up to 10. i looked at those sites and can not find the ic2 that is like the picture? what model should i get that will work the best? thanks for answering all these questions.
Posted By: hotwaterwizard
Date Posted: August 23, 2006 at 9:20 PM
I forgot to tell you that trere are many Manufactures and they use Prefixes in front of the Base numbers Sorry Also these IC's are static sensitive and you need to follow proper grounding precautions when handling them. Like a grounded Soldering Iron and a Grounded Wrist Band. 4093 CD4K CMOS Logic Quad 2-Input NAND Schmitt Trigger 40 cents each https://www.mouser.com/search/ProductDetail.aspx?R=CD4093BCN_Qvirtualkey51210000 Datasheet https://www.mouser.com/catalog/specsheets/4093BC.pdf 4017 CMOS Quad D-Type Flip-Flops 48 cents each https://www.mouser.com/search/ProductDetail.aspx?R=CD40175BEvirtualkey59500000 Datasheet https://focus.ti.com/lit/ds/symlink/cd40175b.pdf 2N7000 MOSFETs N-CHANNEL 60V 200mA 13 cents each https://www.mouser.com/search/ProductDetail.aspx?R=2N7000virtualkey51210000 Datasheet https://www.fairchildsemi.com/ds/2N/2N7000.pdf 78L05 Voltage Regulators 5.0V 0.1A Positive 35 cents https://www.mouser.com/search/ProductDetail.aspx?R=L78L05ACDvirtualkey51120000 Datasheet https://www.st.com/stonline/books/pdf/docs/2145.pdf ------------- John DeRosa (Hotwaterwizard)
Stockton California
When in doubt, try it out !
Posted By: eeuler35thss
Date Posted: August 24, 2006 at 9:23 PM
thanks for all the info. one more question i hope. where do i buy a converter that will be able to keep an amp running that will go from 110v to 12-14v?
Posted By: hotwaterwizard
Date Posted: August 24, 2006 at 10:33 PM
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