• WARNING: Tube/Valve amplifiers use potentially LETHAL HIGH VOLTAGES.
    Building, troubleshooting and testing of these amplifiers should only be
    performed by someone who is thoroughly familiar with
    the safety precautions around high voltages.

MD SM 102b transformer spec's please

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Tad,

MD SM102b does not exist as far as I know.
It is either SM102b, which is a double c-core configuration, or it is MD 102b, which resembles an EI configuration (however not lossless with separate E's and I's).
Core dimensions are not quite the same because of the better efficiency of the c-cores type, but winding geometry/space is the same as these cores should be interchangeable.
Winding height is 17 mm; centerleg width is 68 mm.
 
Thanks Pieter now I have some deminsions to start with. The core I ordered are almost exactly this spec. Sometimes you get lucky. Now to slow down my lathe and start winding.
I have been seriously thinking on designing some kind of pcb for this amp. That will most likely stress my old brain.

Tad
 
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