Hello there, I am Smasher. Shorty, Smiley and myself will be assisting you as we learn how to wire a simple circuit.

When you are finished with this lesson you will be able to label, draw, and wire a simple circuit.

1Dr. Gary Stewardson, Raymond Boyles

Smasher

Shorty Smiley

Simple Circuits

Hello, Shorty again. In our previous lesson we learned the symbols for various electrical components. Now we will learn how to use these symbols to represent an electrical schematic.

Dr. Gary Stewardson, Raymond Boyles

Battery Switch Lamp or Power Supply

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Simple Circuits

First, we will draw and lay out the symbols for the electrical components.

Dr. Gary Stewardson, Raymond Boyles

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Simple Circuits

Next, we attach the lines (hook-up wire) to the components. Your schematic should look like mine.

Dr. Gary Stewardson, Raymond Boyles

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Simple Circuits

Finally, we will label the components of our circuit. Labeling allow us to demonstrate that we know what the symbols represent. Most circuit schematics will not have labels.

Dr. Gary Stewardson, Raymond Boyles

Power Supply Switch

Light bulb

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Simple Circuits

Below I have demonstrated the direction of the flow of electricity when the switch is closed. As we can see, electricity flows from the positive (+) side of the power supply, through the switch (when closed), through the light bulb, and back to the negative (-) side of the power supply.

Dr. Gary Stewardson, Raymond Boyles

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Simple Circuits

Now that we understand schematics and how electricity flows through the represented circuit, let’s complete Activity 5 and the performance objective. You will need your workbook to complete the performance objective.

Dr. Gary Stewardson, Raymond Boyles

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