3B SCIENTIFIC 1009934 Руководство по эксплуатации - Страница 4

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Fig. 6: Console inserted onto U-shaped holder

Fig. 7: Set-up with magnetic field sensor, side view

Fig. 8: Set-up with magnetic field sensor, front view

7. Experiments

7.1 Measurement of Hall voltage as a func-

tion of magnetic flux density B, tempera-

ture T or sample current I for n- or p-

doped germanium

The following equipment is needed for the exper-

iments:

1 Transformer with Rectifier 12 V, 3 A @230 V

1 Transformer with Rectifier 12 V, 3 A @115 V

1 DC Power Supply 20 V, 5 A @230 V 1003312

1 DC Power Supply, 20 V, 5 A @115 V 1003311

1 Set of 15 Safety Experiment Leads, 75 cm

1 Sensor Cable

1 Data logger

1 Software

More information about digital measurement can

be found on the product's webpage in the 3B

Webshop.



Complete the experiment set-up as shown in

Fig. 9.



Connect the AC output of the transformer to

the input sockets for the power supply and set

an output voltage of 12 V.



Connect the coils to the DC power supply.



Connect the magnetic field sensor to the data

logger.



Select sample current I

current see instruction manual for germanium

crystal), select the Hall voltage on the con-

sole and adjust the zero point for the Hall volt-

age with the help of the compensation trim-

mer.

7.1.1 Hall voltage as a function of sample current I



Turn on the DC power supply and set it up as

a constant current source



Select magnetic flux density B or coil current

and record the Hall voltage U

of the sample current I



For your measurement plots, see the manual

for the relevant circuit boards.

1003316

1003315

1002843

1021514

(for max. sample

as a function