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Old 5th April 2012, 01:13 AM   #21
TonyTecson is offline TonyTecson  Philippines
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Sansui Power Transformer
iok, i found the scheme here ; http://www.hifiengine.com/manuals/sansui/au-5500.shtml

it has main winding of 25-0-25 volts, so rails will be +/- 35volts dc....
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Last edited by TonyTecson; 5th April 2012 at 01:18 AM.
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Old 5th April 2012, 02:15 AM   #22
DIYampNOOB is offline DIYampNOOB  United States
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Just 5500....not AU. Sorry mate.
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Old 5th April 2012, 05:47 AM   #23
TonyTecson is offline TonyTecson  Philippines
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Quote:
Originally Posted by DIYampNOOB View Post
Just 5500....not AU. Sorry mate.
here we go....Sansui 5500 | Owners Manual, Service Manual, Schematics, Free Download | HiFi Engine

spec says 45watts per channel so that puts it in the same league as the au-5500....

looking at the schematics, looks like you have

30-0-30 winding, orange leads
0-61 volts, purple leads
0-6 volts, blue leads

you can measure dc resistance of these coils to see what kind of current they are capable of...
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Last edited by TonyTecson; 5th April 2012 at 06:03 AM.
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Old 5th April 2012, 01:20 PM   #24
DIYampNOOB is offline DIYampNOOB  United States
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Oh....ok....so how do I test this monster? And thank you for all your trouble, btw!
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Old 5th April 2012, 01:23 PM   #25
AndrewT is offline AndrewT  Scotland
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First:
identify the individual windings. Use an ohmmeter.
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Old 5th April 2012, 01:38 PM   #26
DIYampNOOB is offline DIYampNOOB  United States
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I took some scans of the schem. I will post some pics of the wires coming out of the trans in a few.
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Old 5th April 2012, 03:10 PM   #27
Puffin is online now Puffin  United Kingdom
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What voltage does the Class D rrequire?
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Old 5th April 2012, 03:27 PM   #28
DIYampNOOB is offline DIYampNOOB  United States
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12-30VDC...........6-12A
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Old 5th April 2012, 04:18 PM   #29
DIYampNOOB is offline DIYampNOOB  United States
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Just some pics of the wires
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Old 5th April 2012, 05:37 PM   #30
megajocke is offline megajocke  Sweden
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Seems the 61V winding is the main high power winding, so that transformer wouldn't be very suitable at all for powering the amplifier directly.
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