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First I offered those numbers in good faith but cannot guarantee their accuracy. I copied them out of the factory service manual for the SVT original, it said for 6550 and for 6146B. Different part numbers for the two transformers.
Look at the old schematic for the original SVT. The 6146B version differs friom the 6550 version. SO verify we have not confused anything.
I don't interpret that as 330-0-330, I see a 330v winding that is center tapped. 165-0-165 if you prefer. In the schematic dated 10/70 I see those windings making -150 and +350. Those numbers do not necessarily look right, so do the math. 330-0-330 means 660v CT.
The 6550 schematic says 695v for B+ on 10/70, by 1975 a different transformer number (300712-1) and B+ is now 660v.
And not all that rare, the schematic also warns to watch for normal changes over the production life.
Transformers are rated for the AC they produce, not the DC they might be converted into.
That new SVT transformer sounds like a convenient option to me.
Look at the old schematic for the original SVT. The 6146B version differs friom the 6550 version. SO verify we have not confused anything.
I don't interpret that as 330-0-330, I see a 330v winding that is center tapped. 165-0-165 if you prefer. In the schematic dated 10/70 I see those windings making -150 and +350. Those numbers do not necessarily look right, so do the math. 330-0-330 means 660v CT.
The 6550 schematic says 695v for B+ on 10/70, by 1975 a different transformer number (300712-1) and B+ is now 660v.
And not all that rare, the schematic also warns to watch for normal changes over the production life.
Transformers are rated for the AC they produce, not the DC they might be converted into.
That new SVT transformer sounds like a convenient option to me.
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