3B SCIENTIFIC 1009934 사용 설명서 - 페이지 5

{카테고리_이름} 3B SCIENTIFIC 1009934에 대한 사용 설명서을 온라인으로 검색하거나 PDF를 다운로드하세요. 3B SCIENTIFIC 1009934 5 페이지. Basic hall effect apparatus

Fig. 9: Experiment set-up for investigating the Hall effect with a uniform magnetic field
7.1.2 Hall voltage as a function of magnetic flux
density B
Select a constant sample current, e.g. 20 mA.
Vary the magnetic flux density B by changing
the current through the coils and record the
corresponding Hall voltage U
For your measurement plots, see the manual
for the relevant circuit boards.
7.1.3 Hall voltage as a function of temperature T
Select magnetic flux density B or coil current.
Switch on the heating controller and record
the Hall voltage U
H
ture.
It is recommended that the sample be heated
to 170°C and to write down the Hall voltage
as it cools down.
Turn on the heating controller and record the
Hall voltage U
as a function of temperature.
H
For your measurement plots, see the manual
for the relevant circuit boards.
7.2 Measurement of conductivity as a func-
tion of temperature T
The following equipment is needed for the ex-
periments:
1 Transformer with Rectifier 12 V, 3 A @230 V
or
1 Transformer with Rectifier 12 V, 3 A @115 V
Select a small sample current I
current will cause the sample to heat up, you
should not exceed a current of 5mA.
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.
H
as a function of tempera-
1003316
1003315
. Since the
P
Subject to technical amendments
© Copyright 2023 3B Scientific GmbH
Switch the display to sample voltage.
Turn on the heating controller and record the
sample voltage U
P
ture.
For your measurement plots, see the manual
for the relevant circuit boards.
8. Care and maintenance
Before cleaning the equipment, disconnect it
from its power supply and remove the circuit
board.
Use a soft, damp cloth to clean it.
Keep the circuit board in the original box after
it has been used and has cooled down.
9. Disposal
The packaging should be disposed of at local
recycling points.
Should you need to
dispose of the equip-
ment
itself,
never
throw it away in nor-
mal domestic waste.
Local regulations for
the disposal of electri-
cal equipment will ap-
ply.
as a function of tempera-