RE: POPULAR ELECTRONICS, Jul. 1964, p29, 250KV TESLA COIL

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Original poster: "Jim Mora" <jmora@xxxxxxxxxxx>



Hello All,

I have a vintage original of the July 1964 "PE" Li'l and big coils. Funny,
the magazine was 35 cents then.  The tube coil was the first coil I ever
built at age 15. My Father wouldn't buy the neon transformer for my well
being, though of course I had an obit stashed in my attic lab:-) The tube
used a 5Y3 as the rectifier and a 6L6 as the primary resonator driver. The
coil was a Miller 4526 from a large screen TV (what would that be, a
whooping 25" semi round). I used to go to Allied and Olsen across the street
on Western Ave, Chicago, a supplier of the miller. Are they still there?

Anyway, the proceeding "big TC" was a neon 30ma 12KV powered unit. The
secondary was 4.75 inch outer diameter phenolic 38 inches long using 2000
turns of formvar wire wound 34.5 inches. It had a feed-through insulator on
the top, no top load.

The primary was 9" wound with 20 turns of test probe wire. The tank cap was
formed of 2 14" x 14" of tin or alum foil cemented to a 18.5" square piece
of window glass. The spark gap was comprised of brass and copper needle
points @ ~1" gap.

I would be happy to post a jpg of this if someone knows the statute of the
copy write... my scanner is working last I used it :-^)

Long Streamers,
Jim Mora


---Original Message-----
From: Tesla list [mailto:tesla@xxxxxxxxxx]
Sent: Friday, January 20, 2006 11:00 AM
To: tesla@xxxxxxxxxx
Subject: Re: POPULAR ELECTRONICS, Jul. 1964, p29, 250KV TESLA COIL

Original poster: Vladimiro Mazzilli <mazvla@xxxxxx>

  Hi Steve
I've found in my collection: on popular electronic of july 1964 only lid'l
coil with VT 6L6 I dont' have the other article that appear on cover, but is
a spinteromertic TC. In Science experimenter fall 1962 there is a VTTC from
Harold Strand With 2X811 VT page 16 to 25, next I 've found another article
by H.Strand on science experimenter (I dont' know the date but the page is
from 52 to 59) with a 5514 or 811 VT. I've another article 1 page by
H.Strand october 1953 on "electricity" and on electronic experimenter 1961
page 15-18 " Tesla's trickery" with a very small battery supplied tc.
Another article on popular mechanics of 1968 "electrical fantasies with
tesla coil" 1x811 VT also by H.Strand.

Cheers

Vladi

Tesla list ha scritto:

 > Original poster: "Steve Andrew" <sjandrew@xxxxxxxxxxxxxx>
 >
 > Hi
 >
 > I'm trying to track down an on-line copy of the article in Popular
 > Electronics (July, 1964) for a 250KV Tesla coil. The article I'm
 > looking for was a TC using 2 x high-power transmitting tubes. There
 > may have been a similar article in Popular mechanicas around the same
 > time. I found a copy of the article some time ago in GIF format but
 > needless to say I've lost both the original link and the image files :-(
 >
 > Many thanks in advance
 >
 > Steve