Output Transformer - Eico HF-12 Instruction Manual

Entries
are
numbers
of those switch contacts
which
are
connected togetherby
the
rotors
at the particular position
117VAC
250W
TRANSFORMER
TEMPERATURE
The temperature
of the transformers used
in
the
HF-12
run
at less
than
195°
despite the fact that the safety
limit
is
at
a much
higher 221°F.
Although I95°F
is
cool
for
a
transformer,
it is
very hot
to
the touch. Transformers
which seem
too hot
when
touched with
the hand, are usually
good and
are actually not overheating.
Output
transformers usually run
cooler than power
transformers.
Some
output
transformers
may
appear
hotter than others
due
to
being located near
hot
components such
as output
and power
tubes
and
power
transformers.
OUTPUT TRANSFORMER LOAD
The output transformer and the output tubes of
any
amplifier are subjected
to
severe
stress
when
the amplifier
is
operated
at
a high
signal level
without a
load.
To protect these components
against possible
damage,
always have
either
a speaker
or
resistive
load
connected
to
the output terminals of the amplifier
while
it is
being operated.
9