I have a very quick scan of the change sheet including schematic
from my printed manual if that might help. Sorry it's in parts but I
only have an A4 scanner!
I may have missed it but I didn't see the prefix for the instrument
you have?
Adrian
On 03/02/2022 12:14, RubenRubio wrote:
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Thanks Tony! More clear than mine :D
The manual changes section shows that main transformer (mine is
9100-4603) has a few substitutes depending on the serial:
08350-60064, 9100-4277 and 9100-4337 (this last is the apropiate
to my unit S/N 2642A...). It is impossible to get one of those,
I only see a -4277 in USA and looks smaller and less-tapped than
mine, so it don't match at all.
I located two cheap used transformers in UK: cheapest option is
one from an 8566B SA, who has less taps but very powerfull ones
(maybe I can use one for make various supplies if it is
possible? or add an aditional little transformer I
have for the +-15 volt supply); and for twice that money, one
from a 8922 GSM analyzer, which has enough secondary windings,
but it requires mess up with connections too (I attached a table
of outputs of this instrument's power supply for reference). I
suppose that feeding the rectifier board with slightly different
voltages from transformer?(under certain tolerance)?doesn't
affect the final result.
Can anyone send or post a photo of schematics of the main
transformer, rectifier and regulator boards in the 8566B manual?
Mine (I attached it) is almost not readable and I need those
figures to decide which transformer I'll buy. Thanks in advance.
So maybe this adventure will continue.
Every opinion or advice is welcome, honestly. I'm here to learn
:)
Regards,
Ruben
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