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5-33.
OUTPUT IMPEDANCE
5-34.
Proceed
as
follows:
30
vdc.
a. Connect test setup shown in figure
5-6
.
b. Turn front-panel
CURRENT
controls
fully
clockwise (maximum).
c
.
Tum
front -panel VOLTAGE controls until
front-panel voltmeter indicates
d. Ad just the oscillator for
a
10-vrms
(E1nL 0.
5-
cps
output.
e. Calculate and
record
the
output
imped
a
nce
using
the following
formula
:
R
=
L 000
ohms;
Eo
measured across power
supply
-
S and +S terminals using
ac
voltmeter; Ein measured
across
oscillator output terminals using the
ac
voltmeter.
f. Using the formula
given
in
step e, calculate and
record
the output
imped-
ance for
oscillator
frequencies of 100
cps,
1
kc,
a
nd 100
kc.
g
.
The output impedance calculated
and
recorded
in steps
e and
f should
fall into the following ranges:
(1)
de to 0
.5
cps;
less than
0
.1
ohm
(2)
0 .5 cps to 100 cps; less than
2. 0 ohm
(3) 100 cps to 1 kc; less
than 0.
5
ohm
(4) l kc
to 100
kc; less
than
4.0
ohm
5-35.
OUTPUT
INDUCTANCE
5-36.
Proceed as follows:
a
.
Repeat steps
a
through
c of para
.
5
-
3
4
.
b. Adjust the oscillator for
a
10-vrrns (Ein),
10-kc
output.
c
.
Calculate and
record
the
output
inductance using the following formula:
5-9
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