[R-390] Variacs and solas: additional thoughts

[Barry]

I was thinking the amperage rating of the bucking transformer was
proportional to the total voltage.  In other words, a 3-amp. 12V bucking
transformer would be good for approximately 30A total load at 120V.  Is that
incorrect?

Barry - N4BUQ



> Hi
>
> For a whopping $10 Radio Shack will sell you a three amp 12 volt
> center tapped filament transformer. The nice thing about the center
> tap is that it will give you both a 5% and a 10% adjustment off of a
> nominal 120 volt line. Three amps is enough to run any radio in the
> R390 size range.
>
> Given that the radio works better off of a high line voltage it's not
> real clear weather you should spend the $10 or not. As mentioned in
> the previous thread using a fuse or two is probably a good idea.
>
>      Take Care
>
>          Bob Camp
>          KB8TQ