Re: [CAD_CAM_EDM_DRO] 3phase & Re: 50uF + suplus motor run caps sources???

Besides, The new ones should be PCB free. Don't need any of
those PC Bees flying around the shop.
Darrell

----- Original Message -----
From: "Lee Studley" <indigo_red@...>
To: <CAD_CAM_EDM_DRO@egroups.com>
Sent: Saturday, September 30, 2000 3:28 PM
Subject: [CAD_CAM_EDM_DRO] 3phase & Re: 50uF + suplus motor
run caps sources???


> Good point!
> In older tube guitar amps , The HV plate supply sometimes
> has 2 caps in series for higher voltage rating.
> These caps would have a high value
> resistor across each. This (divider) seems to both help
> center the voltage sharing and discharge them at
powerdown.
> But thats was a DC condition.
>
> The AC condition is as you say, since caps can act also as
> frequency controlled impedences Rc = 1/wC. They could
easily be
> unbalanced due to variances.
>
> I havn't tried hanging caps off of powerlines before, so
> overlooked that. I'm going to bite the bullet and get the
> 3 80uF/375 volt caps from grainger($29ea). At least I'll
know
> they are new. I have a potential relay so I can use the
cheaper
> electrolytic startcaps at startup. (10hp idler)
>
> Thanks for the sanity checks,
> Lee
>
>
>
>
>
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