[AMPS] SB-220

[Jeff Wolf]

>Would replacing the filament transformer with a PWDahl provide me any 
> >benefit?  Or would I also have to replace the original power >transformer 
>with a hypersil..




Replacing the stock SB220 fils XFormer makes you have to use a step start 
circuit on the fils circuit.

The original transformer uses a core that saturates at a little over the avg 
current draw of the 3-500Zs..  One of the pluses of the SB220..  No step 
start needed on the fils side. (the HV is another story).


>Thanks


Your welcome.

>Richard
>AC5YV


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