Magnetooptical current transformer. 2: Components.
In this second part, the most important components of a magnetooptical current transformer are described and their suitability is discussed. Today He-Ne gas lasers and laser diodes seem to meet best the requirements of the light source. Single-mode optical fibers are capable of transmitting polarized light without depolarization. A fiber coil wound on a special coil former is used as a measuring sensor. Two P-I-N photodiodes, together with an analog electronic circuit, transform the optical into an electrical measuring signal.
H
H
Aulich
W
W
Beck
N
N
Douklias
H
H
Harms
A
A
Papp
H
H
Schneider