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Can I use this voltage converter?

01/22/2010 10:48 PM

I have an audio decoder that I got from Singapore. The specs on the AC adapter for this device say:

INPUT: 230V ~ 50Hz 100mA

OUTPUT: 16V ~ 600ma

I went to RadioShack and bought a voltage converter was has the specs:

INPUT: 11/120VAC, 260mA, 60Hz

OUTPUT: 220/240VAC, 165 mA, 60HZ

Will this work for me since 230 falls between 220V and 240V?

Any advice would be appreciated. Thank you!

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#1

Re: Can I use this voltage converter?

01/22/2010 11:33 PM

What you need is a 16 V 600 mA power supply that steps your mains voltage down to 16 V. What is not clear- is the original AC adapter outputing AC or DC at 16V?

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#2
In reply to #1

Re: Can I use this voltage converter?

01/22/2010 11:38 PM

Hi - thanks for helping.

It says AC adapter on the adapter. On the decoder, where the AC plug goes, it says: 16V AC IN.

What do you mean by mains voltage?

Also, from what I have read, it would seem that this converter would work. It supplies a max of 40W.

Thank you.

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#3

Re: Can I use this voltage converter?

01/23/2010 6:03 AM

Regarding the voltages & currents, it should work fine. RadioShack converter into wall outlet (mains). Converter output to audio decoder AC adapter input - adapter output to decoder.

Be careful about the wiring if the connectors aren't suitable & need to be changed - there's plenty of voltage & current available to kill, and some to spare. If you're not 100% sure you know what you're doing, find someone who does !

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#4
In reply to #3

Re: Can I use this voltage converter?

01/23/2010 9:51 AM

Hi John,

Thanks for your reply. How will I know if the wiring is not suitable? If the device is working, shall I assume everything is okay or is it possible that the non-exact voltages are slowing killing the device?

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#5
In reply to #4

Re: Can I use this voltage converter?

01/23/2010 7:40 PM

If it's started working, that means you got it right. It will continue working fine (unless something unrelated goes wrong - I gotta cover myself!).

The allowed variation of the input voltage before anything gets near going wrong will be at least ±10% - do the sums!

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#9
In reply to #3

Re: Can I use this voltage converter?

01/25/2010 3:21 AM

Hi John you are correct but as i can see here he has`nt look at the current drawn by the load (audio converter)i.e if the load starting current is more than 260mA for the audio converter or if the load maximum current exceed that at full load out put (when item are plug to the audio converter output)it can not be use for the audio converter what ever reliable converter use.

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#6

Re: Can I use this voltage converter?

01/23/2010 10:51 PM

You can safely use RadioShak voltage converter to run Singapore AC adoptor that run your audio decoder.

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#7
In reply to #6

Re: Can I use this voltage converter?

01/23/2010 11:05 PM

Thanks a lot for your input guys. I really appreciate it.

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#8

Re: Can I use this voltage converter?

01/24/2010 4:45 AM

It would have been better to have bought an adapter for 110AC to 16 (or even 15) VAC.....why use two when one would do?

Just make sure that the output wattage or current is at least that of the original.....

A small trabnsformer is really all you need in an insulated/or fully earthed box.

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#10

Re: Can I use this voltage converter?

01/25/2010 5:25 PM

Sorry but no-one has mentioned frequency here. I don't know what the unit is audio converting, but it may use the incoming mains as a frequency reference which is why it is taking in AC and not DC.

For the benefit of the OP, what you have done is fine and I think better than trying to track down a transformer of the same rating. This covers your voltage and current compatibility.

If your device is working as expected, then obviously it does not need the frequency (the hertz or Hz part) to match, or maybe you haven't yet used the function of the unit that does

I think an email to the manufacturer is in order just to be sure to be sure.

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#11
In reply to #10

Re: Can I use this voltage converter?

01/25/2010 7:20 PM

Thanks BabyGuinness. I have heard that the Hz issue is only important if there is a motor involved? I don't think there is a motor in my audio converter.

I am actually thinking of returning the converter from Radioshack and getting this:

http://cgi.ebay.com/100-W-Up-Down-Voltage-Converter-Transformer-110-220-V_W0QQitemZ400099060459QQcmdZViewItemQQptZLH_DefaultDomain_0?hash=item5d27c32aeb

What do you guys think? It's 20 dollars cheaper than the converter from Radioshack and this would definitely be safer in terms of satisfying the requirements, no?

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#12
In reply to #11

Re: Can I use this voltage converter?

01/26/2010 11:35 AM

Don't know about safer - I don't think there'd be much to choose between them (assuming that you didn't need to change any wiring in either case). If you want to save the money, and can live with the size (I assume this is bigger than the Radioshack converter) - go for it.

The 50/60Hz issue may or may not be a problem - if the decoder will only work with 50Hz, you have a problem. My guess is that it doesn't matter. It is very unlikely to do any harm to the decoder, so I'd say try it & worry about more complicated & expensive solutions if it doesn't work as expected.

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