INDUCTORS

1
INDUCTORS!

• -What are they?
• -What do they do?
• -What do they look like?
• -How do they work?
• -Who uses them?
• -Why do they use them?

2
Brief History

• In 1831 a physicist by the name of Michael
  Faraday believed that if an electric current
  could produce a magnetic field then a magnetic
  field could in turn generate and electric
  current. This principle is known as Induction.

3
So what is an Inductor?

• The wire you see below in the shape of a spiral,
  thats an inductor.
• What other shapes do you think they can be?
• Make your own inductor any shape you want
  connect it and see what happens

4
What do they do?

• Basically inductors store energy in a magnetic
  field that is generated by a current carrying
  wire shaped into pretty much any shape you need
  or want.
• But what is a magnetic field?
• I dont think anyone really knows but ask a
  scientist to see what they tell you.

5
What do they look like?

• You can make them any shape you want to.
• You should try few different shapes to see what
  happens?
• There are a few objects there you can shape them
  with.
• (i.e. prism, blocks, tube etc)

6
How do they work?

• Thanks to Faraday we know that a current
  carrying wire produces a magnetic field. So
  when this wire is shaped into a loop/spiral these
  fields interact with each other. In this process
  energy can be stored.
• There it is again that word FIELD
• Did you ask a scientist yet? What are you
  waiting for?

7
Who uses them?

• Here at the lab its safe to say that almost
  everyone uses them.
• Below I have a prototype tank circuit (little
  silver aluminum box). This circuit is placed in a
  probe which is then placed in a magnet.
• Can you find an inductor in the prototype tank
  circuit?

8
Probe, Coil Oscilloscope
9
Try Some things

• Stretch the coil you made. What happens to the
  graph on the oscilloscope?
• Compress the coil you made. What happens?
• Run the probe (black wire with copper coil on
  end) in and out of your coil. What happens?
• Run the probe on the outside of your coil what
  happens?