At 09:24 PM 11/12/01 -0600, you wrote:
>>
>>The US version is what I'd call a 'wall wart'. It plugs directly into
>>a wall socket and is a sealed unit. Do I need to consider firing up my
>>Dremel and doing some surgery on it?
>
>My five year old son just opened the 110V-US version smashing the
>thing on a big rock, you won=B4t believe it, but it opened up just fine,
>didn=B4t even break, except where it should.
>It=B4s a transformer and little PCB with some diode stuff on it,
>I decided to make up my own, these wall wart stuff tends to cause
>a lot off trouble, so I took a transformer, bolted it to desk and made
>up a little board with rectifier, cap, LM317 to give me reliable 9.00V
>That never failes.

I've had good luck opening wallwarts by squeezing them carefully in a=
 plastic-
jawed vise. Try different positions until you can get the ultrasonic welds
to crack. Some of these things have a fuse in them to make them Class 2=20
supplies. Sometimes the fuse just fatigues from start-up surges and dies.=20

Best regards,=20
Spehro Pefhany --"it's the network..."            "The Journey is the=
 reward"
speff@interlog.com             Info for manufacturers: http://www.trexon.com
Embedded software/hardware/analog  Info for designers:  http://www.speff.com
      /.-.\
     (( * ))
      \\ //     Please help if you can:=20
       \\\      http://dailynews.yahoo.com/fc/US/Emergency_Information/
      //\\\
     /// \\\
     \/   \/

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