PREFACE.

HISTORY OF THE TRANSFORMER.

BY

F. UPPENBORN,

EDITOR OF THE “CENTRALBLATT FÜR ELEKTROTECHNIK,”
AND CHIEF OF THE ELECTRO-TECHNICAL TESTING STATION IN MUNICH.

TRANSLATED FROM THE GERMAN.

E. & F. N. SPON, 125, STRAND, LONDON.

NEW YORK: 12, CORTLANDT STREET.
1889.