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Forums › Off topic › Trademe dc adaptors - reliable?
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105 posts

Master Geek
  Reply # 494331 17-Jul-2011 17:43 Send private message

I purchased a phone adaptor from TradeMe only to find I was sold an adaptor far too high voltage for my phone - lucky my phone didn't explode or catch fire, to be honest.



271 posts

Ultimate Geek
  Reply # 494345 17-Jul-2011 18:30 Send private message

richms:
RunningMan:
casewindow: However am I right in assuming that the device will only draw the current required so at 7.5v 900mA max (the dse ones) the device will be catered for (drawing only it's required 500mA)?


That's exactly right.

You need to make sure the voltage and polarity is the same; the current rating is the maximum the power supply is capable of delivering, so as long as the new one is the same or greater than the old, you will be fine.


So long as its a regulated one, the unregulated will push out well over their rated voltage, as they use a crap transformer design to achieve the required short circuit protection. Switchmode supplies are not that stupid so are all well regulated, even the I cant believe it only cost a dollar type off ebay.


Cheers for that - one of the ones from RunningMan's second post in this thread (the DSE one) says it is regulated so I'll get that one:

http://dicksmith.co.nz/product/M9927/international-adaptor-3-12v.jsp

(The reason I didn't find it this morning when searching DSE, before making this thread, was that I searched Jaycar and DSE for 'DC Adaptor' and didn't find precisely a 7.5v 500ma one - in fact on DSE 'DC Adaptor' finds virtually nothing. I preferred it when they had auto-complete style results on their search)




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1326 posts

Uber Geek
  Reply # 494347 17-Jul-2011 18:38 Send private message

I find the easiest way to use DSE's search is to find something that is near enough, then just browse through the catagory that it's in, otherwise you muck around for hours looking for the right keywords!



271 posts

Ultimate Geek
  Reply # 494350 17-Jul-2011 18:50 Send private message

RunningMan: I find the easiest way to use DSE's search is to find something that is near enough, then just browse through the catagory that it's in, otherwise you muck around for hours looking for the right keywords!


This is what I used to do with DSE. The problem is that the new site (which I think is worse) has this sequence:

1. Search for product

2. Click product result that is close to what you're after

3. Product category is something like this:
Home > Search Result:"DC adaptor" > Dick Smith Regulated AC Adaptor 4.5V - 12V DC 2.5A

4. (It was only later I realised that by clicking to 'zoom' on the picture it both took me to the correct product category and zoomed at the same time)




Q6600 @ 3.2Ghz (400x8) | GA-X38-DQ6 | 4Gb Corsair Dominator@800Mhz 4-4-4-12 | HIS HD5870 | Creative X-fi Fatality Pro | 2xWD SATAII Caviar Black 640Gb / 1xSeagate SATAII 7200.12 1000Gb | 2xASUS IDE DVDRW | Silverstone OP1000 PSU | Silverstone TJ09 Case

8809 posts

Uber Geek

Trusted
Subscriber
  Reply # 494389 17-Jul-2011 21:08 Send private message

RunningMan: I find the easiest way to use DSE's search is to find something that is near enough, then just browse through the catagory that it's in, otherwise you muck around for hours looking for the right keywords!


Well thats better than the jaycar one where you can search for something, get totally unrelated results and no way to see what catagory each item is in ;)




Richard rich.ms

1326 posts

Uber Geek
  Reply # 494471 18-Jul-2011 08:59 Send private message

Although Jaycar have revised their site in the last week or so to make browsing through the catagories far more intuitive.

446 posts

Ultimate Geek
Reply # 494490 18-Jul-2011 10:03 Send private message

I'm interested in the responses to this thread.  I need to get a new mains adaptor for a HP DV6 laptop, which now has a connection and only works when twisted a certain way and these are going for $30 on trade me.  The latpops been nothing but trouble for two years and I'd rather put the cash to a new one. Cheapest on Jaycar seem to be $80..

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