Coils and inductance

The COIL and the wonderful properties of

INDUCTANCE

The COIL and the wonderful properties of

INDUCTANCE

A tale of two properties….

Electricity Makes Magnetism?Magnetism Makes Electricity???Electricity Makes Magnetism Makes

Electricity?????

What is Magnetism?

• The magnet is surrounded by an invisible force field

• All magnets have a North and South POLE

• Opposite poles attracted each other

• All ferrous (containing iron) materials can be magnetized

• The earth is the biggest magnet around

The iron core of the earth allows a magnetic field to be created

Hans Christen Oersted

Flux Lines

Brain Waves

Joseph Henry’s Bigger and “Badder” Electromagnet

Underwear saves the electromagnet

Henry’s Electromagnet

Testing Henry’s New Electromagnet

2000 lbs winner

Iron Tape Technology

Back to the Present……

1st

2nd

3rd

4th

5th

Michael Faraday

Radio…Who’s your DADDY?

Electromagnet Energy

Electro-mechanical

Speakers Section

How a DC Motor Works

Old Henry Makes a Transformer

Primary to Secondary Coil

Coil Symbol