> Rich says:
>
> >With a tetrode, an increase in anode supply potential, increases ZSAC.
>
> Some tetrodes - although for 10% change, it's very little. For others,
> like 4CX250B, not much at all - have a look at your constant current
> curves. Doesn't have that much effect in 6146s, either. Unlike a 10%
> change in bias or screen volts.
>
> >When the bias supply is Unregulated, the needed correction will
> >automatically take place whenever the electric mains potential changes
>
> If you do not regulate screen or bias - not if you keep the screen
> constant.
>
> >Yet, in the DAF config., screen potential somehow does not count
>
> Rich, since when have I advocated the G2DAF circuit? The nearest I've got
> it to say that under some circumstances, it could work. That's with more
> caveats than a politicians promise!
>
>
> 73
>
> Peter G3RZP
>
>
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