ELECTRONICS ILLUSTRATED (MI), October 1959, pp. 54-57, 102-103. “A Tesla Coil” by Harvey Pollack. (A vertical unipolar secondary coupled to a movable primary coil. Circuit uses a single Hytron 5514 tube. Cover illustration)

EXPERIMENTER, December 1925, pp. 96-97, 109. “Seeing The Unseen” by Joseph G. Branch. (An unusual combination of two unipolar high frequency coils mounted in a vertical position. Includes a multiple spark gap, glass plate capacitors, and produces 20" sparks. Cover illustration).

Advertising

SALE: BOOK-“Electrical Genius, Nicola Tesla” by Arthur J. Beckhard. 5, Frank Mayer, 30 Kenville Rd, Buffalo, NY 14215

SALE: BOOK-“High Frequency Apparatus - Its Construction and Practical Application” by T.S. Curtis (an original print), mint condition, Dick Nelson, 3470 Travis Ave., Simi Valley, CA 93063 Also, a shortened version of the above (no covers), “Experimental High Frequency Apparatus - How to Make and Use it.”

SALE: TRANSFORMER - General Electric 15Kv at 5Kva, plus many others (also, some capacitors), Dick Nelson, 3450 Travis Ave., Simi Valley, CA 93063 Phone (805) 526-7066

SALE: TRANSFORMERS - I have a dozen used oil furnace ignition transformers, 10,000 volts, 250 VA, $8 ea. or 2 for $15. I meter them before shipment but cannot guarantee their longevity. Some have survived a great deal of experimenting and others I've sold have petered out in short time. TCBA, RD3 Box 181, Glens Falls, NY 12801 (Figure on a shipping weight of 10 lbs. each).

SALE: CAPACITORS - .025 mfd at 40 Kv, good for Tesla coils. Also, some mica capacitors. Call (617) 586-7320 between 9 am and 4 pm, EST.

SALE: VIDEO PORTFOLIO, “The Light Sculpture of Bill Parker.” (A video tape (VHS) of modern artwork using current high frequency techniques. Provided with commentary and musical background - professionally done). Write Circle Gallery, 115 Elm Street, New Canaan, CT 06840 or phone (203) 972-3355.

WANTED: Early ARRL HANDBOOKS (1927-1931. Jan Perkins, 11924 Bos St., Cerritos, CA 90701

WANTED: Magazine covers or other illustrations showing high voltage apparatus and discharges. TCBA would like loan of this material for TCBA NEWS. If you have a cover or illustration that would be suitable, please notify this editor. Or, if you are a photographer, we could use a negative of it. However, don't send anything until notifying me of the publication, date, and description of illustration. EXAMPLE: TCBA is looking for a good sample of the MODERN MECHANIX July 1937, cover. Ours has heavy scribbling on it (drats). TCBA will pay postage both ways (and if used, will extend your subscription).

WHERE TO BUY:

J. Heiman, PO Box 2392, Northridge, CA 91323 (Surplus electrical & electronic equipment - catalog) ITC Electronics, 2772 W. Olympic Blvd., Los Angeles, CA 90006 (tip from Tom Wolfe). Book, “Man of High Fidelity: Edwin H. Armstrong” by L. Lessing. $2 in paperback from the Armstrong Memorial Research Foundation, S.W. Mudd bldg., Room 1342A, School of Engineering and Applied Science, Columbia University, NYC, NY 10027 (see reference to this book in Vol. 3 #1, page 3, TCBA NEWS)

A Tesla Coil Computer Design Program

Astro Electronics Corporation

1133 Thirteenth Street Boulder, Colorado 80302 (303) 449-3993

We offer a computer program which enables you to enter into a Tesla coil project of your own design. The program is available for Commodore, Apple, or Sinclair formats (please specify.) Send check to above address c/o RJ

Disc - $30 + $2 shipping

Video Tape (VHS or Beta) Shows computer designed projects in action and the computer program for determining their design. $40 + $2 shipping