AC DC wall adapter question: HELP

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  #1  
Old 09-29-14, 11:09 AM
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AC DC wall adapter question: HELP

hello all
im not that savvy on electrical stuff when it involves adapters
we have a water softener unit for the house and i believe the adapter has gone bad, not sure how to test if its bad or its the actual circuit board thats gone bad.
the picture attached is the adapter, i also have many adapters from other devices that work and was wondering if i need an exact match when it comes to the input and output info on the adapter or what am i looking for exactly not to burn the board.
any help would be super awesome. and thanks alot
 
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  #2  
Old 09-29-14, 11:16 AM
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24vac is the voltage which should be the same. 400ma. is the supplied current. Your new supply needs to be at least 400ma. but can be larger.

The plugs may be different. You may have to splice the old plug/cable onto the new supply. Since it's AC there is no polarity to the wiring.

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  #3  
Old 09-29-14, 11:41 AM
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wonderful, thanks for the help,,yes i will switch the prongs, just need to find the correct adapter now, i see most cellphone adapters which i have plethora of wont work...hmm
 
  #4  
Old 09-29-14, 11:52 AM
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24 volts is a bit unusual for a wall wart. Last resort you could use a 24 volt auxiliary transformer. You would probably have to put it in a junction box and hard wire.
 
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Old 09-29-14, 06:00 PM
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would this work below? its input is not the same but outputis...
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Old 09-29-14, 06:27 PM
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No... that is a DC output power supply.

Plus..... it's a 230vac 50hz input only. Where did you find that ?? That would be used in Europe.

You can find 24vac adapters at amazon and on eBay.
 
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Old 09-29-14, 10:23 PM
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yes that is actually European, found it on ebay,
hmm think this will work?
US DC 24V 500mA 1A Switching Power Supply Adapter 100 240 AC | eBay

thanks again for the prompt replies, really helpful
 
  #8  
Old 09-29-14, 10:30 PM
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i found one thats 24V but its milliamper is 300, can i try it and see if it works or its a no no?
 
  #9  
Old 09-30-14, 06:56 PM
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I'd try it. Worse case it might let the smoke out of the wallwart but by monitoring how hot ithe wall wart gets should prevent that. If you can't hold your finger on the power supply for 10 seconds it is overloaded. Or install a fuse holder and a 300 ma fuse.
 
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Old 09-30-14, 07:30 PM
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ok thank you again for all the help, i will try and see what i can do,,,
much appreciated
 
  #11  
Old 09-30-14, 07:39 PM
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Like Ray said.... it should be ok. Make sure the softener can actually get into regen mode.
 
  #12  
Old 09-30-14, 10:53 PM
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ok i cant seem to find this adapter anywhere online,,,,anyone know of a website or even a store i can buy this from?
i never thought it would be so difficult to buy an adapter lol
 
  #13  
Old 09-30-14, 11:24 PM
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eBay and Amazon like I said previously. I found over 20 on amazon.

Here's a perfect, almost identical to yours, adapter.
Amazon: Industrial Grade 11Y709 Plug In Transformer, Wall, 24VAC

Otherwise here's a whole bunch of them. Anyone will work for you.
Amazon: 24vac transformers: Electronics

Here's more. A little larger wattage than you need. Would still work fine.
Amazon: MG ELECTRONICS MGT2450 TRANSFORMER 24VAC

24V AC 20VA Power Supply Transformer UL Listed Class 2 | eBay
 
  #14  
Old 10-01-14, 12:03 PM
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My local electronics/audio supply store has tons of transformers.
 
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