ESI 250-DA - Components in DC Parallel Inductance Measurement (Detector Terminals)

2 3
4,4
FOR
PARALLEL
INDUCTANCE
MEASUREMENTS
WITH
DC
SUPER-
IMPOSED
THROUGH
THE
DETECTOR
TERMINALS
(cont.
)
R
-
POWER
LIMITING
RESISTOR
This
protects
the
bridge
,
the
detector
,
and the
unknown
inductor.
L
-
ISOLATING
INDUCTOR
C
-
ISOLATING
CAPACITOR
Avoid
ac
pickup
and
coupling
to
the
unknown.
This
prevents
excessive
generator
loading.
Not
necessary
if
R^t^h-measured)
(f,
)
(6)
kilohms
.
KC
This
keeps
dc
out of
the
Generator.
R
-
CURRENT
ADJUSTING
CONTROL
To
set
desired
current.
MA
-
CURRENT
MONITORING
METER
To
measure
dc
current.
ADJUST
THE
DC
CURRENT
AS
REQUIRED
The
current
will
vary
with
the
setting
of
the
main
dial.
MEASURE
THE
INDUCTANCE
See
Section
2,3.
ielsl
i
i
250-DA
7/S9