I'm to lazy to do the math that says, 200 volts in 4000 is probably
beyond the tolerance of your meter. The '77 will be very happy with what
you have, keeping the grid current nice and low.
Rick Stealey wrote:
> I have just no-load tested my homebrew power supply for my 8877 amp. The
> transformer is rated 2900 volts at 1 amp. I am getting 4200 volts with just
> bleeder load on it. This is above the maximum rating of 4000 volts for an
> 8877. Of course with idling plate current it might drop down into that
> range, but I am wondering what you experts think about this.
>
> By the way, if anyone in the NJ area would be interested in swapping with me,
> I would prefer to have a more reasonable weight transformer. Something like
> 2200 volts at one amp, hypersil would be ideal. I don't know the weight of
> my transformer but I can tell you this much - two of us used a hand truck to
> get the beast into the basement, and it was all I could do as the man on the
> lower steps, to hold it back. We had to go one careful step at a time. It
> is probably over 200 lbs. Made by Chicago transformer I think. As far as I
> know it has never been used, but you can be sure it will sit there and power
> a legal limit amp forever on RTTY !!
>
> Rick K2XT
>
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