Re: DC power supplies etc.

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Rick Williams by way of Terry Fritz <twftesla-at-qwest-dot-net>" <richardwwilliams-at-earthlink-dot-net>

Mike,

10uf ?  Whoa! :)

But that's still a good price IMO at that voltage and capacitance.

USA Manufacturing is where I get PFC caps. Bought a bunch of 200v 15uF run
caps at $0.35 each.
http://www.usamfg-dot-net/

For the diodes try Moteva.

http://www.moteva-dot-com/moteva/main_page.html

THV512T
Most Popular Microwave Diode
SPECIFICATION 12KV 550mA
REPLACEMETN FOR HVR-1X-3 and HVR-1X-4

1-24 $1.20
25-Up $0.99

$50 minimum though. I bought 50 bucks worth and still used 24 of them to
build a bridge rated at 36Kv -at- 1 amp. A bit over-engineered but it gives me
peace of mind. :)



Rick W.
SLC


----- Original Message -----
From: Tesla list <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Sunday, December 23, 2001 2:44 PM
Subject: Re: DC power supplies etc.


> Original poster: "Mike Nolley by way of Terry Fritz <twftesla-at-qwest-dot-net>"
<nolleym-at-willamette.edu>
>
> > USA Manufacturing Surplus (http://www.usamfg-dot-net/) has microwave oven
caps
> > (2100 VAC or about 3 KV DC at 1 uF) for 50 cents each which is a good
deal.
> > Look in their on line catalog under capacitors.  They also have some
1500
> > volt 3 uF caps for 50 cents.  At these prices, you can gang a bunch of
them
> > in series/parallel for DC power supply use.
> > --Steve
>
>     That's a pretty good price, I might look into buying some of those.
Do
> you know of a manufacturer
> that sells good quality diodes at those prices?
>     There is also an issue with the oven caps as filter devices.  They are
> great for doubling
> purposes, but the filter capacitors need to handle the full voltage of the
> power supply--12kv or so.
> To get a capacitor of the required voltage and with sufficient ripple
> reduction (say 10uf) you would
> need... 216 capacitors.  Thats $108.
>     --Mike
>
>
>