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Jan Rowland

 

Table of Contents
 

Introduction, Determining Core Size	2
Basic Program to Compute Core Size, Core Area Table, Core Area Graph	3
Determining Primary Turns, Turns Per Volt, Current, and Wire Size	4
Determining Secondary Turns and Wire Size, Bare Copper Wire Diameter Table	5
Formula to Calculate Wire Diameter, Using a Scientific Calculator	6
Building  a Coil Winding Spool, Sketch of Wooden Spool	7
Dimensioned End View of Spool Core	8
Dimensioned Plan View of Spool End-Cap	9
Using a Lathe, VSR Drill, or Building a Transformer Winding Lathe	10
Winding-Lathe Shaft-Turns Encoder Assembly	11
Up/Down Turns Counter Circuit	12
Using Formvar Insulated Wire, Wire Terminations	13
Transformer Winding Methods, Insulating Paper	14
Suggested Patterns for Mylar Insulating Paper	15
Obtaining E-I Laminations, L-Brackets	16
Assembling a Transformer, Dimensioned Sketch of E-I Laminations	17
Plan View of Coil, Impregnating the Finished Transformer in Formvar Varnish	18
Using A Vacuum Box, Curing the Varnish	19
Side Section of  Transformer, Finished Transformer Dimensions	20

 

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