OK guys, I started a long series of posts with my last question about
regulating a 1KV screen supply for a 4-1000 in AB1. I've tried a lot of
your ideas, but mostly have turned a handful of sand-state stuff into
puddles of silicon.
The screen supply itself is overkill, it's easily capable of 500W
continuous, resonated choke input.
To make a long story short, I think my supply may be stiff enough. I don't
have access to fancy test equipment so I'm just looking for your thoughts on
this. The supply is heavily loaded (6K ohm bleeder). When I add an
additional 6K bleed (160ma load) I get a 50V drop (1000 -> 950). Clearly
this is not any kind of a dynamic load. On the plus side, the variac I'm
using for testing is a pretty wimpy job. In the final installation I'll be
using a much huskier variac and the primary side will be stiffer running the
transformer on 220V.
I'm mostly a CW OP but I don't want to be known for a horrible SSB signal
the few times I run this mess in AB1.
So, what-cha think? is 5% regulation acceptable on the screen of a 4-1000
in AB1?
Time to start cutting sheet metal for the RF deck.
THX for listening, 73 Bill N2BC
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