These transformers and condensers are mounted on the top of the generator assembly. The
transformers are mounted at an angle, thus minimizing interference between them. The cores of
the transformers are made of a special iron, and the number of laminations used is adjusted to
secure the proper inductance.Wires from the magnet coils connect to the transformers, and wires
from the transformers lead to the terminal strip on the generator.
This terminal strip carries the output frequencies of the generator, which are arbitrarily numbered
from 1 to 91 in order of increasing frequency. This frequency numbering is continued throughout
the instrument. The frequencies are not in order on the terminal strip, and Figure 13 indicates the
arrangement. Several terminals at the right end are grounded to the generator frame and serve to
ground the manuals and pedals.
Transformers and condensers are not used below frequency 44, but a length of resistance wire
shunts each generator. Frequencies 44 to 48 have transformers only, while both transformers and
condensers are used for frequencies 49 to 91.
Two condenser values are used - 0.255 mfd for frequencies 49 to 54, and 0.105 mfd for
frequencies 55 to 91. The transformers are all different. Each transformer is matched to its
condenser and any replacements are supplied as matched pairs by the factory.
11
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