co
.1-
Iz
y
o
;t
e
n
avesha pe
Amplifier Response
Condition
RECTANGULAR
nm
SATISFACTORY
FLAT
SAG
LOW PRIMARY INDUCTANCE
INOUTPUT TRANSFORMER:
INCORRECT VALUES OF THE
DEFICIE.
T LOW FREQUENCIES
COUPLING ELEMENTS
ROUNDING
HIGH LEAKAGE INDUCTANCE
�
I
OUTPUT TRANSFORMER
OR HIGH DISTRIBUTED
DEFICIE T HIGH FREQUENCIES
CAPACITANCE IN CIRCUIT
RI GING
MALADJUSTMENT IN THE
EGATIVE FEEDBACK
CIRCUIT; INCORRECT
'G
AT HIGH FREQUENCY
CONSTANTS; INSTABILITY
For an am plifier with good characteristics, the response will be flat up to about the 11th
harmonic of the input fundam ental. As an exam ple. If a 1kHz square wave is reproduced without
distortion, the am plifier response is
flat
to about 11kHz.
OTES:
1.
Outpu voltage settings are initially m ade with
ATTENUATION
and
VARI-
ABLE
adjustments and the waveform switch set at the sine wave position.
The indica ed value on the scope will be equal to the peak-to-peak output
\'01
tages.
The
wa,'e
-o m
selectOr
switch
is
then set at
the
square
wave position. Disregard
the 'oltme er reading.
I
in doub .
hec'
the
P'p output
voltage with
a calibrated scope.
2.
I t
is ad,isabl e
0
check
the inpu
t
waveform
on
a
scope
before application.
3.
Co e ,ion rom
he
SYNC
output
term inal
to
the scope sync
input will m ake
a us m e tS
easier
when displaying
waveform s .
.
ore
wil l
start to
fall off a about 1/11
of the fundamental when
--
< .d.
0
-
i
played waveform .
on
the
rear
panel, can
be
used in several
applications as described
The
"In
Cl "
o
r
"ou
put"
impedance
is approxim a ely
10kS1.
B.
OUtpU Fre ue c�' Con rol
The
0
cilIa or
cequency
can be
sy nchronized with an
accurate source over a range of
=
1
%
per
rm s
"olt
input,
see
Fig.
2-2.
For exam ple. when the oscillator is set at some point between 990 and 1010Hz, and a
-7-
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