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Suggested power supply for Kadee 309 electromagnet uncoupler

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  • Member since
    December 2004
  • From: Bedford, MA, USA
  • 21,483 posts
Suggested power supply for Kadee 309 electromagnet uncoupler
Posted by MisterBeasley on Thursday, June 24, 2010 10:28 AM

I am installing a couple of these on Phase 2 of my layout.  I have one in my older Phase 1 tracks, which I operate with a 12 volt, 1 amp wall wart.  After reviewing the specs, I'm kind of surprised it works, as the instructions suggest 16 volts, 3 amps as the minimum.

But, I tried wiring up a new unit to the same supply, and I didn't get enough magnetic field to separate the couplers.  So, I'm looking for another supply.  All Electronics dot Com doesn't show anything in that range.

What are other people using?  Would I get enough from a 12 volt, 3 amp supply?  Or is there somewhere else that might have a better selection in power supplies?  Thanks.

It takes an iron man to play with a toy iron horse. 

  • Member since
    October 2006
  • From: Western, MA
  • 8,571 posts
Posted by richg1998 on Thursday, June 24, 2010 10:48 AM

Both units may be a little different in construction. Just a guess. All Electronics has a 16 volt and 18 volt transformer at a little over 1 amp.

If you know how to parallel transformers, you could use two of the same brand/type. I have done that in the past but you have to phase the transformer secondary windings.

There are some transformers that have dual identical secondary windings the you can put in series or parallel for more voltage or more current but I do not find those transformers much anymore, at least not lately.

 http://www.kadee.com/html/309%20ins.pdf

Rich

If you ever fall over in public, pick yourself up and say “sorry it’s been a while since I inhabited a body.” And just walk away.

  • Member since
    December 2004
  • From: Bedford, MA, USA
  • 21,483 posts
Posted by MisterBeasley on Friday, June 25, 2010 9:02 AM

I've found that All Electronics has an online inventory that varies from day to day.  I found the supply I was looking for and ordered one.

It takes an iron man to play with a toy iron horse. 

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