Page 2 of 4 FirstFirst 1234 LastLast
Results 11 to 20 of 31

Thread: momentary switch -> latching circuit?

  1. 20th July 2010, 11:12 PM #11
    mike_ie's Avatar
    mike_ie
    mike_ie is offline Master
    Join Date
    Jan 2009
    Location
    On the road around Australia
    Posts
    900
    Total Downloaded
    0
    I knew that I had heard of them being used somewhere else before - Volkswagen Beetles use the same setup toggle between heads and dims.

    Google gives me this:
    http://www.oldvolkshome.com/headrelay.pdf

    It is used on VW Beetles to toggle between low and high beams so it will handle a fair amount of current. It mechanically latches in alternating positions each time you push the switch connected to the terminal labeled "brown wire" in the drawing, with the other side of the switch connected to ground. The wire labeled white with black stripe would be connected to the +12V source thru an appropriate fuse. The coil is only energized when you push your switch.
    Reply With Quote Reply With Quote
  2. 20th July 2010, 11:18 PM #12
    Sprint
    Sprint is offline YarnMaster
    Join Date
    Dec 2007
    Location
    Central Queensland
    Posts
    3,468
    Total Downloaded
    0
    Quote Originally Posted by pop058 View Post
    What about a simple changeover relay. One pulse to change it one way and the next to change it back. One set of contacts are used to do what ever you require and the other set left vacant ??
    garden variety changeover relays wont work in this case, they only switch over while energised


    hmm..... looks like its time to go to bed with a copy of the ashdowns book and hope the answer lies within
    Reply With Quote Reply With Quote
  3. 20th July 2010, 11:27 PM #13
    mike_ie's Avatar
    mike_ie
    mike_ie is offline Master
    Join Date
    Jan 2009
    Location
    On the road around Australia
    Posts
    900
    Total Downloaded
    0
    A little more googling tells me that the exact relay you are looking for is Relay "434" - 1C0 941 597. Apparently it's also used in Audi's.
    Reply With Quote Reply With Quote
  4. 21st July 2010, 05:16 AM #14
    Blknight.aus's Avatar
    Blknight.aus
    Blknight.aus is offline RoverLord Vendor
    Join Date
    Aug 2006
    Location
    Melbourn(ish)
    Posts
    26,499
    Total Downloaded
    0
    Jaycar latching relay
    Dave

    "In a Landrover the other vehicle is your crumple zone."

    For spelling call Rogets, for mechanicing call me.

    Fozzy, 2.25D SIII Ex DCA Ute
    Tdi autoManual d1 (gave it to the Mupion)
    Archaeoptersix 1990 6x6 dual cab(This things staying)


    If you've benefited from one or more of my posts please remember, your taxes paid for my skill sets, I'm just trying to make sure you get your monies worth.
    If you think you're in front on the deal, pay it forwards.
    Reply With Quote Reply With Quote
  5. 21st July 2010, 09:11 AM #15
    bee utey's Avatar
    bee utey
    bee utey is offline AT REST
    Join Date
    Apr 2009
    Location
    Crafers West South Australia
    Posts
    11,732
    Total Downloaded
    0
    Quote Originally Posted by Sprint View Post
    who said it was for foglights?

    problem with a latching relay, is that to my understanding, is that once you trigger it, you need to kill the power to turn the relay off
    The VW headlight relay was used in Kombi's until at least 1979, that's probably the newest kombi I have dismantled in my youth. Visit your local pick-a-part style wrecker and look at all the early VW products on offer.
    Reply With Quote Reply With Quote
  6. 21st July 2010, 12:44 PM #16
    mike_ie's Avatar
    mike_ie
    mike_ie is offline Master
    Join Date
    Jan 2009
    Location
    On the road around Australia
    Posts
    900
    Total Downloaded
    0
    Quote Originally Posted by Blknight.aus View Post
    Jaycar latching relay
    Yeah, I took a look on Jaycar too and spotted that one.This is where it would be good to know what exactly you are trying to drive with this circuit. If it's a low current circuit, then there are more options available. On the other hand, if it's a high current application then the options are considerably narrowed down. Considering that you are using stock switches it could be heated seats, spotlights, fog lights, all which draw a decent number of amps. CAre to fill us in, or do we need to guess
    Reply With Quote Reply With Quote
  7. 21st July 2010, 12:48 PM #17
    Basil135's Avatar
    Basil135
    Basil135 is offline ChatterBox
    Join Date
    Apr 2008
    Location
    Adelaide SA
    Posts
    2,517
    Total Downloaded
    0
    Quote Originally Posted by mike_ie View Post
    Yeah, I took a look on Jaycar too and spotted that one.This is where it would be good to know what exactly you are trying to drive with this circuit. If it's a low current circuit, then there are more options available. On the other hand, if it's a high current application then the options are considerably narrowed down. Considering that you are using stock switches it could be heated seats, spotlights, fog lights, all which draw a decent number of amps. CAre to fill us in, or do we need to guess
    The other option is to use the Jaycar IC relay to drive another larger relay. Mind you, this starts to get a little trickier in the wiring, and you would probably need to enclose it all in a box -

    Depending upon the application...
    Reply With Quote Reply With Quote
  8. 21st July 2010, 01:06 PM #18
    VladTepes's Avatar
    VladTepes
    VladTepes is offline Major Part of the Heart and Soul of AULRO Subscriber
    Join Date
    Feb 2004
    Location
    Bracken Ridge, Qld
    Posts
    16,055
    Total Downloaded
    0
    He's not saying because its one of those James Bond secret gadget missile kind of things....
    It's not broken. It's "Carbon Neutral".


    gone

    1993 Defender 110 ute "Doris"
    1994 Range Rover Vogue LSE "The Luxo-Barge"
    1994 Defender 130 HCPU "Rolly"
    1996 Discovery 1

    current

    1995 Defender 130 HCPU and Suzuki GSX1400

    Reply With Quote Reply With Quote
  9. 21st July 2010, 03:12 PM #19
    rogan
    rogan is offline Fossicker
    Join Date
    Nov 2009
    Location
    Auckland, NZ
    Posts
    36
    Total Downloaded
    0
    Special Applications with SPDT Relays, Diagrams
    Reply With Quote Reply With Quote
  10. 21st July 2010, 06:48 PM #20
    mike_ie's Avatar
    mike_ie
    mike_ie is offline Master
    Join Date
    Jan 2009
    Location
    On the road around Australia
    Posts
    900
    Total Downloaded
    0
    Quote Originally Posted by VladTepes View Post
    He's not saying because its one of those James Bond secret gadget missile kind of things....
    Dunno, how much current does an ejector seat draw???
    Reply With Quote Reply With Quote
Page 2 of 4 FirstFirst 1234 LastLast
« HF mobiles | Little Green Box Ticking »

Bookmarks

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  

Forum Rules

Search AULRO.com ONLY!
 Search All the Web!