Re: Sloppy china practices (example)

pbFJKD@xxxxxxxxxxxx wrote:
http://www.users.on.net/~endsodds/smps.htm

"I opened up a whole bunch of SMPS (around 12) from different manufacturers
and carefully examined them. The worst power supply was a Chinese made brand
which advertised a 250 watt rating together with 5 volts at 25 amps on the
cover plate but on examination used 1N5404s in the 5 volt supply line (3 amps
max.) and completely deleted all input and output RF filtering components. As
the quality moved slowly upward from the this extraordinary low, each of the
supplies had various serious shortcomings except.."

Ie the chinese manufactor did:
* Rate at 25A - But used 3A diodes.
* No RF filter on input & output.

Comments?


I got a free chinese NiMH charger with a camera, it charged only partially the batteries and I opened it, looking for the controller chip and the algorithm used. You can see the inside here (there were no components in the other side):

http://www.solener.com/Charger.jpg

--
Regards
Miguel Giménez
.

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