Re: Garage cleaning

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

Original poster: "bob golding by way of Terry Fritz <twftesla-at-qwest-dot-net>" <yubba-at-clara-dot-net>

Jim,

 hey  have you got copyright on  your  ad ? if not I would like to also
offer my own collection  of various  high value items for the discerning
hobbyist as well. for a complete list of  what I have for sale please email
me. I am in the UK Cambridge and  you must come and collect it. if you want
to sell it on  I salute you . good luck.  hope your sales technique is a bit
better than mine. email me off list if interested. save you having to wade
thought the mud at the  scrap yard like I did. only condition  if there are
two of them  you take them both.

cheers
bob golding.


----- Original Message -----
From: "Tesla list" <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Monday, December 31, 2001 1:34 AM
Subject: Garage cleaning


> Original poster: "Jim Lux by way of Terry Fritz <twftesla-at-qwest-dot-net>"
<jimlux-at-earthlink-dot-net>
>
> It being the new year, I need to clear out some incredibly valuable and
> useful stuff (my wife calls it "that HV junk") from the garage. Before I
try
> alternate methods of disposal, I thought that there might be a list'ite
who
> could put it to good use.  It's free under two conditions:
>
> 1) You're going to put it to good use (which could include hoarding it in
> your garage, just in case) and not going to turn around and resell it.
> 2) You're going to deal with moving it from my house (in Thousand Oaks, CA
> (Southern Cal, about 30 mi from LA)) to wherever.  I'll help you load it,
> but you're responsible for crating, packaging, tieing down, etc.
>
> If there's more than one person interested, the one with the most
> interesting application gets it. Kind of like giving a pet to a good home,
> right?
>
>
> Here's what's available:
>
> 30-40 kV, 350 mA DC power supply - It's several hundred pounds, in a 6
foot
> high 19" rack. Basically a three phase transformer with a 6 pulse bridge
> rectifier using 8020A tubes, all in a oil tank (which does not leak).
> There's a switch to run the primaries in Wye or Delta, and there's two
taps
> as well.  There's also a three phase variac (30A, from memory), a
contactor
> with overcurrent protection, etc.  I have a partial rough schematic of
> everything, if you want to try and use it as is. I don't have three phase
> power, nor am I likely to in the near future, and it's just too big to
> hassle with, but, if you're interested in fooling with a high power DC
coil,
> this is a nice start.. (I think a rotary converter, or a suitable array of
> capacitors on the primary, might make a nice single to 3 phase converter).
>
> A rack about 5ft high with: 2 plate transformers, 110V primaries at 40
Amps,
> 5300V, 750 mA out (approximately, I'm too lazy to go out in the garage and
> read them), as well as a set of 8 oil filled filter capacitors, 2uF -at- 6kV,
> with bleeder resistors, in compartmented polyethylene boxes.  I wired it
up
> about 5 years ago as a pair of voltage doublers for use as a capacitor
> charging supply.  I think there's a big contactor in there too, but I
can't
> remember if I scavenged it out for something else. Again, if you're going
to
> do DC coils this would be a nice start. (or, you could consider this a
small
> pole pig... 8kVA at 10-11kV RMS).
>
> A Xray machine power supply (CSX110) which is essentially a 500 Hz SCR
> inverter that drives a transformer and solid state rectifier for 110 kV-at-
> 100mA (short duty cycle, though.. 5-10 seconds at that current).  You'll
> need a 100Amp 100V DC supply to operate it (well, maybe not the
100Amps)...
> It was originally designed to run off 100V+ NiCd pack, and has the charger
> built in, but no batteries.  I have the service manual and full
schematics.
> It has wheels (After all, it was designed to be rolled around a hospital).
> NO X-RAY HEAD!! (but does have the HV cables)
>
> A bunch (8)  of HV pulse caps (75kV, 1.6 uF) from Maxwell and Aerovox.
> They're about 250 lbs each.
>
> These two items together make a nice start for a very impressive Marx Bank
> (40 kJ, 600 kV..)
>
> A pair of isolation transformers out of a TWT test set.  I'm pretty sure
> they'll hold off 15 kV (probably rated for 25+), and they are 480V in,
120V
> out (no taps).  The 120V winding is the one with good isolation, but, you
> could run them back to back, or float the core hot. At least 2 or 3 kVA,
> judging from the core cross section (probably 10 square inches). If you're
> interested, I can go measure them. If you want to make an NST farm for,
say
> 30 or 45kV, by seriesing the secondaries, these would be the hot ticket.
> They're heavy, though... (50-100 lbs)
>
> Some Ross Engineering HV relays (fairly low voltages, though: 25 or 40
kV),
> SPST and SPDT, some latching.
>
> A weird rack I built to hold 4 of the big caps. It looks like a fiberglass
> pallet with some uprights, and it's made from Extren I beams (2x4") and
> angle (3x3).  Unlikely you'll use it as is, but if you saw it apart
> (Outside, lots of wind/water, and a Sawzall) you've got lots of good HV
> structural stuff for standoffs, etc.
>
> Send me an email (jimlux-at-earthlink-dot-net) if you're interested...
>
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