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  1. #1
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    Default AC to DC converter

    We have a (edited to correct) elliptical (NOT treadmill) that I want to start using.. My wife has relocated (ie lost) the power cord to it while cleaning up.. (rant on) After the cord being in the room for 3 years it mysteriously disappears and she 'hasnt seen it and hasnt moved it' - but she had to move it because its not there anymore.. (rant off)

    The machine has a decal that says "9v - 1.5 amps" - and take the typical looking power plug connection..

    Assuming I can find a plug that fits the pin, do i have to use a converter with that exact output? OR can you use something higher/lower?

    thanks

    Brian
    Last edited by thatguy; 03-02-2010 at 05:59 PM.
    Bedford, VA
    2320 w/ 62D MMM, 200CX FEL, Pats EZ Change, LX4 Cutter
    Co-owner (with my father) of John Deere 790, 30 HP, 4x4, 513 cutter, 70 FEL
    2012 Nissan Xterra Pro-4x

  2. #2
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    Default Re: AC to DC converter

    Radio Shack used to sell a multipower pack that would let you change the voltage and had multiple tips to fit a variety of plug ins. Our local Goodwill also keeps a tub full of various power supplies. Shouldn't be that hard to find another one.

  3. #3
    Elite Member
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    Default Re: AC to DC converter

    After i posted the question I remembered we have a universal adapter (range from 3 to 9v at 1300mA). And I it had a pin that fits the machine..

    My problem is now that the polarity (is the center pin + or - )on the machine is not marked and the owners manual does not indicate it.. I have emailed the company and asked..

    Is there a 'standard' polarity for US electronics? It appears the the center pin is + on most adapters I have looked at - but didnt want to make an assumption..

    the machines say 1.5 amps and the adapter is 1300 mA (which i think converts to 1.3 amps) - will that 0.2 amps make a difference?

    Brian
    Bedford, VA
    2320 w/ 62D MMM, 200CX FEL, Pats EZ Change, LX4 Cutter
    Co-owner (with my father) of John Deere 790, 30 HP, 4x4, 513 cutter, 70 FEL
    2012 Nissan Xterra Pro-4x

  4. #4
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    Default Re: AC to DC converter

    Center positive is standard. I would try that first if there isnt a label saying which should be used (the label should look like the one below if it is center positive).
    -powerplug-positive-jpg

    Aaron Z
    A human being should be able to change a diaper, plan an invasion, butcher a hog, conn a ship, design a building, write a sonnet, balance accounts, build a wall, set a bone, comfort the dying, take orders, give orders, cooperate, act alone, solve equations, analyze a new problem, pitch manure, program a computer, cook a tasty meal, fight efficiently, die gallantly. Specialization is for insects.
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  5. #5
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    Default Re: AC to DC converter

    1.5 amps is what you can expect the machine to draw, I would get a power supply that is rated at least 2 amps, that gives you a little wiggle room. In case you find a converter that is rated in watts, Watts / volts = amps. you need something greater than 14 watts. 14 watts / 9 volts = 1.555 amps. If you underpower your supply, things get HOT, or your motor burns out.

  6. #6
    Veteran Member Mickey_Fx's Avatar
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    Default Re: AC to DC converter

    Something is not correct here or we don't have the full story.

    No treadmill is going to operate on 1.5A @ 9V ~14W. Any treadmill of any kind intended for an adult will have at a min a 1HP motor and system is going to take close to 900W to run including controls, etc. Better treadmills have motors close to 1.5 -2 HP.

    9v/1.5A may run some aux attachment.
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  7. #7
    Veteran Member K7LN's Avatar
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    Default Re: AC to DC converter

    Quote Originally Posted by Mickey_Fx View Post
    Something is not correct here or we don't have the full story.

    No treadmill is going to operate on 1.5A @ 9V ~14W......

    9v/1.5A may run some aux attachment.
    The 1.5 amps seems a bit heavy, but I suspect it's for the display only.
    JD 790 w/70 FEL & 7 BH on turf tires
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  8. #8
    Elite Member
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    Default Re: AC to DC converter

    Quote Originally Posted by Mickey_Fx View Post
    Something is not correct here or we don't have the full story.

    No treadmill is going to operate on 1.5A @ 9V ~14W. Any treadmill of any kind intended for an adult will have at a min a 1HP motor and system is going to take close to 900W to run including controls, etc. Better treadmills have motors close to 1.5 -2 HP.

    9v/1.5A may run some aux attachment.
    sorry.. I made a mistake - It is an elliptical not a treadmill - dont know what I was thinking when i typed that..

    it does have a display and there is some sort of resistance to it..

    The 9v/1.5A is what is label near the connection point..

    sorry

    brian
    Bedford, VA
    2320 w/ 62D MMM, 200CX FEL, Pats EZ Change, LX4 Cutter
    Co-owner (with my father) of John Deere 790, 30 HP, 4x4, 513 cutter, 70 FEL
    2012 Nissan Xterra Pro-4x

  9. #9
    Elite Member
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    Default Re: AC to DC converter

    Quote Originally Posted by aczlan View Post
    Center positive is standard. I would try that first if there isnt a label saying which should be used (the label should look like the one below if it is center positive).
    -powerplug-positive-jpg

    Aaron Z
    That is what I though/noticed on other converters..

    The funny thing was I did a google search and found a 9v/2A converter with the pin size i need and it was the opposite - center pin was negative..

    Still havent heard back from the mfg yet.. I may just buy their converter (assuming it is reasonably prices) and not worry about it..

    thanks

    brian
    Bedford, VA
    2320 w/ 62D MMM, 200CX FEL, Pats EZ Change, LX4 Cutter
    Co-owner (with my father) of John Deere 790, 30 HP, 4x4, 513 cutter, 70 FEL
    2012 Nissan Xterra Pro-4x

  10. #10
    Gold Member
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    Default Re: AC to DC converter

    You can find replacment connectors at radioshack. Don't plug in the new converter till you get the polarity correct, Diodes can be defeated(smoked) and toast the whole unit.

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