[AMRadio] Help..need info on Thordarson multimatch driver T15D82

[wwd at netheaven.com]

In <5.0.2.1.0.20020423221617.00ab1410 at pop.mindspring.com>, on 04/23/2002 
   at 10:27 PM, Bob Login <jlogin at mindspring.com> said:

>  Hi, Building a class B mod and have this driver xfmr. It says 15W
>multimatch driver. It has plug-in jacks on its side and solder connectors
>on the bottom  ...three are marked 500ohms A, B, C and across from them
>are P-C-C-P terminals. The label says T15D82 or possibly 32? seems more
>like 82....Need info on how to hook it up?   Would like to use my 32V2
>500 ohm mod output to drive the Class B.    Thanks, Bob, AA8A 

Are the C-C connected together ( 00.0x ohms)? If infinity then they expect
you to do so. Would there be any sense in adding some series resistance
here? What is the dc resistance of P-C? Compare this to the 500 Ohms dc
res to get a sense of the P-C impedance. You would LIKE it to be on the
order of 3.5k each leg. This value works into my 4-125 grids push-pull. In
other words you would like the 500 ohm imput to be upped to 3.5k ohms or
even more.

You may want to install loading resistors across each P-C winding to
smooth out the audio (etc).

It is hard to imagine that it would be a step-down transformer. Then it
would be called a 'line' or '70.7v' transformer. Chances are you have the
real deal. I'll have a bit of digging to find my old Thordarson brochures
. . .

Bill    K2AME 
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