AMSTI CircuitsAMSTI CircuitsLesson 14Lesson 14
OverviewOverview
Semiconductor diode = allows electricity to flow in one direction
Examples: battery chargers, radios, computers, and televisions
Consist of cylindrical piece (functional piece) with a wire (connectors) coming out each end
Arrow in symbol shows direction of electricity
Colored band on one end of the diode corresponds to the direction of the current
MaterialsMaterials
Box with batteries, battery holders, bulbs, bulb sockets, wires, and switch
Diode
2 Fahnestock clips
Take apart flashlight
Create a circuit tester using 2 batteries and one bulb and make sure the bulb works
Give each pair of students a diode and touch it against the wires to test
Look closely at the diode. What do you think might be the reason that some bulbs light and others do not?
Reverse the way you put your diode on and see what happens
Introduce the symbol used to draw a diode.
Draw a circuit diagram.
Extension Extension
Put the diode and your switch (used to make the flashlight) into the circuit using 2 batteries and one bulb. Can you connect it so the switch turns the light on and off?
The End!!!The End!!!