3B Scientific Magnetizing and Demagnetizing Coil User Manual
Page 2
3B Scientific GmbH • Rudorffweg 8 • 21031 Hamburg • Germany •
www.3bscientific.com
Subject to technical amendment
© Copyright 2008 3B Scientific GmbH
4.2 Magnetising
•
Put the sample (e.g. iron rod) to magnetize inside
the coil.
•
Connect the coil to the power supply and apply a
voltage of 12 V DC.
•
Switch on the coil and wait for a short while. Then
pull the sample slowly from the coil.
The sample should then be magnetised.
4.3 Production of a magnetic field
•
Set up the coil with a compass needle at one end.
•
Connect the coil to the power supply and set it to
DC.
•
Switch on the coil, slowly increase the voltage and
observe the compass needle.
4.4 Demonstration of inductance
•
Connect the multimeter to the sockets of the coil.
•
Set the display to “needle position zero centre”.
•
Set the multimeter to DC voltage reading and
choose a small measuring range.
•
Move the bar magnet inside the coil and observe
the display of the multimeter.