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Old July 18th 08, 06:06 PM posted to sci.electronics.repair,uk.rec.audio
N_Cook
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Posts: 8
Default Virtual battery operation ?

Adrian C wrote in message
...
N_Cook wrote:
If it was not for Technics make and going by the heavy lump of metal,

for no
functional purpose, I would have said it was a con.


It's a very clean power supply, virtually as good as a battery as
regards supply noise.

Technics have this used all over the place, from pre-amplifiers to CD,
DVD and Blueray players.

More info here
http://www.diyaudio.com/forums/showthread/t-118458.html


--
Adrian C


Looks like a regular linear ps to me except for the transformer being about
4 times the size necessary for a preamp and relays - more superfluous
weight.
Pair of 3300uF caps , 78M18,79M18, 5V reg , no chokes, no mu-metal or
anything noticeably odd but, at least, no gold plating.

--
Diverse Devices, Southampton, England
electronic hints and repair briefs , schematics/manuals list on
http://home.graffiti.net/diverse:graffiti.net/