Electromagnetic Devices

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This circuit module is compatible with all the D3000 Base Unit options and it introduces students to the principles of magnetism and electromagnetism through a wide range of practical activities.

Typical topic areas include:

• Permanent Magnets and Magnetic Fields.
• Electromagnets
• Electromagnetic Induction
• Inductive Reactance
• The Transformer
• Solenoid
• Relay
• Force on a Conductor and Motor Principle
• Stepper Motor

Typical activities include:

• Assess the properties of magnetic core materials and the field strength around a magnet.
• Use the Hall probe to determine the behavior of an electromagnet with different core materials and their relative permeability.
• Determine the effect of core materials on coil inductance.
• Investigate the effect of turns ratio on voltage ratio.
• Investigate the effect of turns ratio on current ratio.
• Investigate the frequency response of different core materials.
• Investigate pull-in voltage for a solenoid.
• Determine pull-in and drop-out voltage and current for a relay.
• Diagnose faults in relay circuits.
• Investigate the operation of a simple DC motor.
• Determine EMF in a generator armature.
• Determine the operation of full step and half step motors
• Faultfinding