"GregS" wrote in message
...
In article , Andre Majorel
wrote:
I'm trying to get a rough estimate of the rating of a
transformer.

It comes from an AKAI AT-M670L tuner. Transformer part number is
ST41007 TW; L350Y197H01; T 982 TK. No luck searching the web for
these.

Primary: 220 V / 50 Hz.
Secondary #1: 2 x 16.8 V loaded (2 x 5.75 ohm)
Secondary #2: 1 x 3.07 V loaded (2 x 1.5 ohm) (I guess for the VFD).
Fuses on secondary #2: 2 x 315 mA T
Weight: 252 g.
Windings size: about 25 x 25 x 15 mm.
Core size: about 42 x 33 x 22 mm.


I can't find where its in the S.E.R.

You find the voltage drop as you load the outputs individually. The total
load
of all outputs will cut down on the added individual outputs. Measure the
output from no load to drop voltage 10-20%, then measure or compute
current.

greg


Given that the transformer is likely to be over 85% efficient, the input
power consumption rating printed on the back of the unit will give you a
good idea of the VA rating of it

Arfa