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Audio Transformer Design

& Construction Volume 2

VintageWindings Audio Transformer Design Volume 2 DVD

     Here is volume 2 of my Transformer Design and Construction DVD's.
This volume has a collection of vintage audio magnetics catalogs. Most
vintage transformer core material was chosen from the pages of these
catalogs. Core material details are fully covered.
The third volume in this series has detailed dissections of a
Peerless K-241-D/4665 Input and Output Transformers, Triad HS-52,
Western Electric 111C, and, for the first time ever, Neumann U-47's
BV-8, BV-11 and more!
 All files on vol 2 scanned from originals.
All files now available Free. Note: many of these files are large so the
entire Coil Winding Collection (3 Volumes) is still available on a USB
Drive. Please see my E-bay sales page. If you see a file here that
shouldn't be here please e-mail me. Thank you and Enjoy!

Note:
Most browsers will open .pdf's in a lower resolution. To view these files
in full resolution it is best to download first and open in a good .pdf
viewer.


Here's Vol 2 of the Coil Winding Collection:
 
These catalogs are RARE!!


Allegheny Ludlum Magnetic Core Materials -
Technical Bulletin: EM-1 - from 1939 !!  - Here is where WE and Langevin shopped for much of their magnetic transformer core needs. This is a GREAT catalog. It covers all of the earlier transformer lamination alloys right up to and including MuMetal and 4750. There are very detailed processing and annealing instructions in it. I'm talking actual step by step instructions. It is laid out in beautiful art deco styling nicely done in full color; 34pp. Scanned completely in color at very hi res preserving the stunning color illustrations. As rare as rare gets and scanned from an immaculate original. Contains much lamination and alloy info not found anywhere else. Full size catalog.

Allegheny Ludlum Lamination Catalog -
Technical Bulletin: EM-21 - from 1948 (I think) - Transformer Lamination Offerings from one of Western Electric's suppliers; 28pp. This catalog explains in good detail, lamination plating, and annealing. Scanned completely in color at very hi res preserving the beautiful color curve graphs. Super rare and scanned from an immaculate original. Metal alloy content is well covered. Full size catalog.


Allegheny Ludlum "Magnetic Materials" -
from 1947 - Booklet published by the Allegheny Ludlum Company. This is one COOL booklet. It is a graphic masterpiece. It is laid out in beautiful art deco styling lavishly done in stunning full color; 36pp. This booklet explains, in superb detail, magnetics and magnetic materials. There is a step by step, line by line explanation of B-H curves the likes of which I have never seen so beautifully and graphically illustrated. Annealing, grain orientation details, lamination plating, and everything under the sun is covered in this wonderful booklet. Scanned completely in color at very hi res preserving the stunning color illustrations. Very, very rare and scanned from an immaculate original. This publication alone is probably worth the DVD price. I have only seen one of these for sale. I bought it, here's the .pdf. RARE! Full size booklet.


Arnold Engineering  Magnetic Materials Catalog -
 Catalog number: GC-106-C - from 1963 - Transformer Lamination Offerings and more from one of Western Electric's and Langevin's suppliers; 27pp. This catalog contains info regarding the famous Silectron Cores used in many Langevin products. Scanned completely in color at very hi res preserving the beautiful color curve graphs. Very rare and scanned from an immaculate original. See the attached .pdf of the Langevin 5116-B preamp output transformer core with the Arnold logo and the core number matched to the page from the catalog where that lamination was chosen. That's a C-core that Arnold can still produce!! The catalog covers toroids and much, much more as well. Note that Arnold Engineering was the magnetic products subsidiary of Allegheny Ludlum. The Arnold catalogs have excellent bibliographies. Full size catalog.


Arnold Engineering  Molybdenum Permalloy Powder Cores Catalog - Catalog number: PC-104-C - from 1962  also includes supplement PC-104-C - from 1959 - Toroidal Powder Core Offerings and more from one of Western Electric's and Langevin's suppliers; 32pp. This catalog contains a great little history lesson at the beginning. These toroids are superb for audio filters and transformers too. Scanned completely in color at very hi res preserving the beautiful color curve graphs. Very rare and scanned from an immaculate original. Note that Arnold Engineering was the magnetic products subsidiary of Allegheny Ludlum. The Arnold catalogs have excellent bibliographies. Full size catalog.


Arnold Engineering  Iron Powder Cores Catalog -
Catalog number: PC-109-A - from 1965  Toroidal Iron Powder Core Offerings and more from one of Western Electric's and Langevin's suppliers; 36pp.  This catalog contains great little history and process lessons at the beginning. The toroids listed in the catalog are superb for audio filters and transformers too. Scanned completely in color at very hi res preserving the beautiful color curve graphs. Very rare and scanned from an immaculate original. Note that Arnold Engineering was the magnetic products subsidiary of Allegheny Ludlum. The Arnold catalogs have excellent bibliographies.
Full size catalog.


Arnold Engineering  Silectron Cores Catalog -
Catalog number: SC-107-A - from April, 1959  Toroidal Iron Powder Core Offerings and more from one of Western Electric's and Langevin's suppliers; 55pp. This catalog contains a process lesson at the beginning. The Silectron cores listed in the catalog have been used in countless transformers from hundreds of manufacturers. Scanned completely in color at very hi res preserving the beautiful color curve graphs. Very rare and scanned from an immaculate original. Note that Arnold Engineering was the magnetic products subsidiary of Allegheny Ludlum. This catalog has banding info for C-cores. Langevin used cores from this catalog for their 5000 series amplifiers. It also has two catalog supplements added to the file. Full size catalog.


Arnold Engineering  Silectron Cores -
 Price List - Catalog number: SC-107-PL - from 1958  Early price list to go with catalog SC-107-A; 20pp.  Scanned in color where it was used at very hi resolution. Very rare and scanned from an immaculate original. Note that Arnold Engineering was the magnetic products subsidiary of Allegheny Ludlum. Full size catalog.


Arnold Engineering  Silectron Cores -
Price List - Catalog number: SC-107-PL - from 1963. Later price list to go with catalog SC-107-A; 20pp.  Scanned in color where it was used at very
hi resolution. Very rare and scanned from an immaculate original. Note that Arnold Engineering was the magnetic products subsidiary of Allegheny Ludlum. Full size catalog.

Belden Magnetic Wire Catalog -
 Handbook 13 from Belden Wire Co. - Complete line of Belden magnet wire from 1958. Very rare and scanned from an immaculate original. 99pp.


G-L Magnetic Tape Wound Cores Catalog -
 Catalog number: TB-105 - from Nov. 1963  Excellent tape wound cores catalog from a great era, suppliers to many manufacturers; 8pp.  This catalog contains The G-L full line of tape wound cores and alloy info. Scanned completely in color at very hi resolution Very, very rare and scanned from an immaculate original. Super nice color curve graphs. Full size catalog.


G-L Magnetic Laminations Catalog -
Catalog number: TB-108 - from Aug. 1963 Excellent transformer lamination catalog from a great era, suppliers to many manufacturers; 55pp.  This catalog contains The G-L full line of transformer laminations and alloy info. Scanned completely in color at very hi resolution Very, very rare and scanned from an immaculate original. Nice vintage pictures. Full size catalog.


Magnetic Metals Permalloy Powder Filtoroid Cores Catalog -
 from May, 1961 
Toroidal Powder Permalloy Core Offerings and more from one of the industries leading suppliers. 32pp. These toroids are designed for audio filter applications but can be used for transformers as well. Scanned completely in color at very hi res preserving the beautiful color curve graphs. Very rare and scanned from an immaculate original. Full size catalog.


Magnetic Metals Magnetic Performance and Data Catalog -
 from Oct. 1959  Excellent catalog from one of the largest suppliers of transformer cores. 20pp. Many popular vintage transformer cores came out of this catalog. The most popular audio alloys of the day are covered and the graphics were scanned at hi-res. in full color. There is a great section in the back of this catalog showing how to set up an easy to build transformer testing rig. Full size catalog.


Engineering a Transformer -
 Stancore Transformer Corp. from Sept. 1945 This book gets a ten out of ten !! It is one of the coolest and only books of it's kind that I have ever seen. 107pp. It is done in two parts. The first part has dozens of high quality photo's of the Stancore production process and detailed descriptions of the techniques involved. If a picture is worth a thousand words then this file is the best deal on the planet. The second half of this book is a complete and very detailed transformer designing tutorial. The illustrations are excellent as is the information. Scanned completely in color at very hi-res preserving the beautiful vintage look of this book. Very, very rare and scanned from an immaculate original. Full size book. This is about a 500MB file !!

Electrical Materials Handbook -
 Published in 1961 by the Allegheny Ludlum Steel Co. This is the authoritative source for magnetic metal information. This is a HUGE file. It is 322pp in high resolution.  Very rare and scanned from an immaculate original. Full size book.


Magnetic Metals Shielding of Transformers and Tubes Booklet -
from Sept. 1961 A great introductory tutorial on small scale shielding of transformers and tubes 24pp. Superb photo's and color graphs hi-lite the very useful shielding information given in this booklet. Scanned completely in color at very hi res preserving the beautiful color curve graphs. Very rare and scanned from an immaculate original. Full size booklet.


Netic & Co-Netic Magnetic Shielding Manual -
Magnetic Shield Division, Perfection Mica Co. from July, 1964  A great introductory tutorial on small scale shielding of transformers and more 35pp. Superb photo's and step by step instructions for shielding transformers with Mu-Metal foil etc.. Scanned in original B&W at very hi res. (except the cover) Very, very rare and scanned from an immaculate original. Great DIY info!!!! Full size manual.


Do it Yourself Magnetic/Electrostatic Shields Using Foils -
 Magnetic Shield Division, Perfection Mica Co. Manual 128-129 from 1964. A complete DIY guide to small scale foil type shielding (Like Lundahl transformers).  14pp. Excellent photo's and step by step instructions for shielding transformers with Mu-Metal foil etc. Scanned in original B&W at very hi res. Very, very rare and scanned from an immaculate original. More great DIY info!!!! Full size booklet.


Amerline Corporation Bobbin Catalog -
 Amerline Corp. from the late 50's  31pp. Catalog contains all sorts of coil bobbins and coil forms Scanned in original B&W at very hi res. (except the cover). Very, very rare and scanned from an immaculate original. Full size catalog.


Boesch Winding Machine Catalog 1 -
 Catalog number: 58 from 1957. 16pp. I'm just including a couple of these winder catalogs for fun. I have many more that I'll include as extras with future DVD's. I own one of the Boesch winder models (TW300) and it's a fine unit. This catalog also shows all available accessories for the machines. Scanned in full color at very hi res. it's a pleasure to look through. Very rare and scanned from an immaculate original. Full size catalog.


Boesch Winding Machine Catalog 2 -
Catalog number: 64 from 1963. 36pp. Here's another one that I'm including just for fun. This catalog is packed with winding machines and accessories. Scanned in full color at very hi res. it's a pleasure to look through. Very rare and scanned from an immaculate original. Full size catalog.

Altec-Peerless Audio Transformer Dissection Addendum
This is a link for the addendum to my Altec-Peerless 4665/K-241-D Audio Transformer dissection paper that appeared on my Transformer Design

 DVD Vol. 2. It shows new lamination details. (free)


Please visit my E-bay listing Here


These files available on  USB Drive
with the entire Coil Winding Collection

Please E-mail for details

 

 

 

 

 

 

 

 

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