ESI 250-DA - External Q Rheostat Calculations for Parallel Inductance; Series Inductance Measurement with External Q Rheostat

2.3.8
TO
USE
AN
EXTERNAL
Q
RHEOSTAT
(cont.
)
READ
Lp(EQUIVALENT
PARALLEL This
reading does
not
depend
on
INDUCTANCE) FROM
THE DIALS.
frequency.
CALCULATE
Q
Q
=
1.592
^kc^kn
Q
'kc
-
Storage
factor
-
Frequency
in
kilocycles
-
External
D-Q
rheostat
resistance
in kilohms.
2.
3.
8. 2
SERIES
INDUCTANCE
BRIDGE
CONNECT
AN
EXTERNAL
RHEOSTAT
”R”
BETWEEN
THE
HI
"C"
TERMINAL
AND
ANY
GROUND
TERMINAL.
BALANCE
THE
BRIDGE.
Use the range
switch,
the
MAIN
DIALS and
the
external rheostat.
READ
Lg
(EQUIVALENT
SERIES
This
reading does
not
depend
on
INDUCTANCE)
FROM
THE
DIALS.
frequency.
CALCULATE
Q
Q
-
Storage
factor
fj^^
-
Frequency in
kilocycles
Q
=
0.628
fi^pR.
«
rk
"
External
D-Q
rheostat
^
resistance
in
kilohms.
This completes the series
inductance
circuit. Be
sure the
EXT D-Q
terminals are
jumpered.
L
=
P
1
+
Q^
Q2
min]
250-DA
7/59
Note: