Hello to all,
I bought a Buffalo II board with Ballsie + the PSU´s needed,
but those are not intended for a DIY-Project in a clasical way,
but for upgrading a CD-Player from the
eighties.
Now, after tossing out the original D/A Board,
there will be plenty of room for modding.

But I do not like the idea of putting extra toroids somewhere deeper in
the player´s cabinet and run a mains power cable halfway through the player for feeding them.

The original D/A-board runs on +/- 15V and will probably draw
a lot more current from the player´s transformer than the Balsie.

So I can take the original transformer´s for the Balsie`s PSU.

Also the secondaries for the players main board (+5/-5V running on a +11/-11 V Reference voltage) could be used,
but here the problem starts:

There is no data in the player´s datasheet and circuitry, how much VA the
secondaries for the main board can provide and how much current is consumed by the main board´s circuitry.
Also no label on the Transformer. The total consumption is 25W, but the player´s transformer has 4 secondaries,
two of them for supplying positive/negative voltages.

How can I measure the power consumtion of the mains board AND how much current the secondaries
of the orinal transformer can provide? And can I attach two PSU to one secondary, or will they interfere?


Thanks for your help,
Nak

Edited by user Tuesday, June 22, 2010 11:51:07 AM(UTC)  | Reason: Not specified