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Thread: timed relay???

  1. #1
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    Question timed relay???

    I need a way to pause power to mycomputer for like 5 seconds while my car ignites. I have a relay which turns on my power invertor as my car turns on. This relay is hooked up to my acc line. So here's the problem: as my keyless ignition turns on my car, it first starts the acc line for liek a second, which will power up my invertor, which in turn powers up my computer. After a second, the voltage drops as teh car ignites and the invertor cuts power, causing the computer to turn off. After the car has successfully started, the invertor turns on, but the computer won't turn on... nto sure why.

    The way i made my computer turn on when power returns is by shorting the two pins on the motherboard that hook to my turn on button. I have no boot on power option in my BIOS. if anyone has any suggestion PLEASE HELP!

  2. #2
    Maximum Bitrate albysure's Avatar
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  3. #3
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    Cheaper than the David Navone delayed turn on, and has more features if you want them.

    PAC TR-7 Trigger Module

  4. #4
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    hey archimense, that link you showed me looks like it might be exactly what i need. I was jus twonderin if you had a link to the orderpage or if i gotta get it off ebay? i was also wondering if it had an option where you can have it get 12v, lose some, and wait until it gets 12v back to start it? otherwise, both look like they would work for what i need.


    I found this link, but when you said 18 bucks, i was hopin for somethin with shipping included.
    http://cgi.ebay.com/ws/eBayISAPI.dll...sPageName=WDVW

  5. #5
    Variable Bitrate RS3RS's Avatar
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    That's a good excuse to upgrade to an OPUS

  6. #6
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    Quote Originally Posted by Slitha
    hey archimense, that link you showed me looks like it might be exactly what i need. I was jus twonderin if you had a link to the orderpage or if i gotta get it off ebay? i was also wondering if it had an option where you can have it get 12v, lose some, and wait until it gets 12v back to start it? otherwise, both look like they would work for what i need.


    I found this link, but when you said 18 bucks, i was hopin for somethin with shipping included.
    http://cgi.ebay.com/ws/eBayISAPI.dll...sPageName=WDVW
    The best place I found to buy it was www.audiooutfitter.com

    I think it was $18 plus shipping.

    I know it has a mode for counting input pulses, but I don't know if that is what you want to do. I added a link to the detailed instruction manual in the post I linked to earlier.

    I haven't seen any devices that do more than this thing.

  7. #7
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    Thanks so much for your help archimense, but i seem to have uncovered another problem (created by my own retardedness). When i shorted the two turn on switch pins on my motherboard, it doesn't work as i expected. The computer turns off since the pins are connected more than 4 seconds. Anywyas, here's my question: is there any type of relay that will just touch contacts instead of holding the signal? if not, how can i make the comp turn on???? Oh man, this is turning out to be much more in depth than i expected.

  8. #8
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    What I would suggest you do is use the TR-7 and set it up with a turn on delay. That way your inverter won't turn on until the car has started.

    Then setup your PC to "auto on after power loss" that way your computer will auto on when the inverter turns on again. If that doesn't work then you would want a circuit that would send a pulse to the PC's power button a second or so the inverter turned on.

    What I would really suggest is buy an OPUS, or if you don't want to spend that much buy and ITPS and use it with your inverter.

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