[Amps] Filament transformer for SB-220 needed

[Commander John]

I remember in older handbooks a way to use a filament transformer without a center tap by connecting 2 resistors between the filament leads and hooking the return to the place where the two resistors connected together.  Worth checking into.
john W9ZY


--- On Sun, 2/27/11, Jim Mullen <kk1w.jim at gmail.com> wrote:

> The subject pretty much says it all.
> My SB-220's filament transformer
> decided to quit during the ARRL DXCW contest last week. An
> odd failure, the
> center tap of the 5V winding is no longer 'tapped'. I
> pulled the transformer
> hoping the connection would be visible after taking off the
> end bell but no
> joy.
> 
> The transformer is in fine shape except for non-tapped CT.
> Windings look
> good, no signs of overheating, both primaries and the other
> secondary are
> good too.
> 
> I know Harbach has new ones but if I could scrape up a used
> one for less $$
> that would be great.
> 
> '73...
> 
> Jim/KK1W
>