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Re: FRY MY ADAPTER by Choson 08/21/2003, 1:08pm PDT
Dunc wrote:

Putting 240V on one side of the transformer should roughly double the voltage on the other side (compared to what it was with 120V on the input), which means double the voltage across the diodes. Did they survive? I dunno....did anything smell funny?


Nope, nothing out of the ordinary as far as I could tell.

Dunc wrote:

I say go ahead and use it. The deal with DC adaptors is they're supposed to look (electrically) like Ideal Voltage Sources - that is, for any amount of current you draw from it (up to the current rating) the voltage remains constant - 4.5V in your case. To your MP3 player, a 4.5V supply with a 0.6A limit should look no different than a 4.5V supply with a 1A limit, since the player shouldn't be exceeding the 0.6A limit anyway. People don't design electronics expecting to hit the limit of their DC supplies in normal operation; they always over spec the current by a certain percentage. So your friend's adapter can supply more current than your old one, but should do the job just as well.


Well, even though I did get some warning along the line of corax's clarification, I went ahead and tried out the adapter, and nothing happened. Some barely audible noise that I thought was from the CD mechanism (it's an MP3 CD player) and no response. Again, the thing was still operational on battery power after the test, so... I guess the next test is pretty much what I was going to do anyhow, which was to try the original adapter back in North America.
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FRY MY ADAPTER by Choson 08/20/2003, 6:13am PDT NEW
    Re: FRY MY ADAPTER by Dunc 08/21/2003, 3:47am PDT NEW
        Re: FRY MY ADAPTER by corax 08/21/2003, 10:28am PDT NEW
        Re: FRY MY ADAPTER by Choson 08/21/2003, 1:08pm PDT NEW
 
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