Objective:
– To Demonstrate Induced EMF.
Apparatus:
- “Hammond Organ Tonewheel” custom board
- “Guitar String” custom board
- “Marshall Stack” amplifier
- Twisted Leads
- Straight Banana Leads
- Tektronix 2205 Oscilloscope
Method:
Notes:
Watch the following YouTube video for a detailed explanation of this demonstration.
The lab illustrates that either the vibrating spring and rotating tone wheel will create induced EMF due to the changing magnetic flux in them.
The speaker will convert the electrical energy created by the induced EMF to the sound energy.
This lab also gives an opportunity to show that twisted leads provide better noise cancellation/electromagnetic interference from the surrounding than normal banana leads.
Video of DEM38 – video not produced by BCIT