Richard,
If I understand you, I can remove the swinging choke leaving just the 25mfd
cap as the hv filter. If the high voltage then rises to about 3kv instead
of the normal 2.2 kv, I would have to change the screen voltage and the
grid voltage proportionally to maintain the proper operation of the 2
4-400's. Is this a correct assumption?
BTW....I understand that the 4-400's would run better with 3kv
Thanks in advance,
Bill KC2IFR
At 09:07 AM 3/2/02 -0800, you wrote:
> >Thanks for the replies folks. I should have figured the power rating of the
> >resistors myself......i use ohms law, must have been a "senior moment"!!!
> >As for the swinging choke input filter, Im stuck with it unless I
> >completely re-do the whole Thunderbolt. If I go to a capacitor in put
> >filter, the HV will rise and this will cause all sorts of headaches I
> >think.
>
>? Switching to C-input and removing the swinging-choke should raise the
>anode-V to about 3kVDC, which is c. the same as a SB-220 and TL-922. My
>guess is that the extant tank components will withstand the increase.
>
> >My main reason for changing the hv cap is to increase the
> >capacitance from the stock capacitance of 8mfd to about 25mfd to help the
> >regulation on ssb.
>
>? To compensate for the transient unregulation produced by rapidly
>changing current on SSB/CW through the swinging choke, it might take
>considerably more C. I would start off with c. 0.1F and check it with a
>DC 'scope.
>
>
> >Any other suggestions will be greatly appreciated.
> >
> >
> >
> >Bill Russell
> >KC2IFR
> >
> >_______________________________________________
> >Amps mailing list
> >Amps@contesting.com
> >http://lists.contesting.com/mailman/listinfo/amps
> >
>
>
>- R. L. Measures, a.k.a. Rich..., 805.386.3734,AG6K,
>www.vcnet.com/measures.
>end
Bill Russell
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