1. Circuit Design Circuit Design Gateway To Technology®
Unit 4 – Lesson 4.2 – Electronics
Circuit Design

2. Circuit Design What Is a Circuit? Circuit Diagrams Series Circuits
Gateway To Technology®
Unit 4 – Lesson 4.2 – Electronics
Circuit Design
What Is a Circuit?
Circuit Diagrams
Series Circuits
Parallel Circuits
Combination Circuits
This presentation is intended to be used with Project Circuit Design.

3. Circuit Design
Gateway To Technology®
Unit 4 – Lesson 4.2 – Electronics
What Is a Circuit?
A system of conductors and components forming a complete path for an electric current
If the path is broken anywhere in the circuit, current stops flowing.
How many ways could the path be broken in the image below?

4. Circuit Design
Gateway To Technology®
Unit 4 – Lesson 4.2 – Electronics
Circuit Diagrams
A drawing that traces the path that electron flow will take in an electronic circuit
Electronic components and functions are represented by symbols.
Draw a map from the school to your house or some other destination.
How did you draw roads, buildings, the school?
What other symbols did you create?
In an electronic circuit diagram, the roads are like wires. The buildings, houses, etc. are like components.

5. Circuit Design
Gateway To Technology®
Unit 4 – Lesson 4.2 – Electronics
Circuit Diagrams
A drawing that traces the path that electron flow will take in an electronic circuit
Electronic components and functions are represented by symbols.
Switch
Lamp
Battery

6. Series Circuits A circuit that contains only one path for current flow
Circuit Design
Gateway To Technology®
Unit 4 – Lesson 4.2 – Electronics
Series Circuits
A circuit that contains only one path for current flow
If a component is removed, the path is opened and current cannot flow to any components.

7. Series Circuits A circuit that contains only one path for current flow
Circuit Design
Gateway To Technology®
Unit 4 – Lesson 4.2 – Electronics
Series Circuits
A circuit that contains only one path for current flow
If the path is open anywhere in the circuit, current stops flowing to all components.

8. Series Circuits A circuit that contains only one path for current flow
Circuit Design
Gateway To Technology®
Unit 4 – Lesson 4.2 – Electronics
Series Circuits
A circuit that contains only one path for current flow
Build a series circuit which contains two lamps
Sketch the circuit in your engineering notebook and trace the path that the electrons take in the circuit.
Sketch a schematic diagram of this circuit in your engineering notebook.

9. Circuit Design
Gateway To Technology®
Unit 4 – Lesson 4.2 – Electronics
Parallel Circuits
A circuit that contains more than one path for current flow
If a component is removed, then it is possible for the current to take another path to reach other components.

10. Circuit Design
Gateway To Technology®
Unit 4 – Lesson 4.2 – Electronics
Parallel Circuits
A circuit that contains more than one path for current flow
Create a parallel circuit utilizing the board with two paths to two lights.
Sketch the solution in your engineering notebook and trace paths of the circuit.
Sketch a schematic diagram of this circuit in your engineering notebook.

11. Combination Circuits Contain both series and parallel arrangements
Circuit Design
Gateway To Technology®
Unit 4 – Lesson 4.2 – Electronics
Combination Circuits
Contain both series and parallel arrangements
What would happen if you removed light 1? light 2? light 3?
Create a combination circuit utilizing the board, then sketch the circuit diagram in your engineering notebook. 1 2 3

12. Combination Circuits Contain both series and parallel arrangements
Circuit Design
Gateway To Technology®
Unit 4 – Lesson 4.2 – Electronics
Combination Circuits
Contain both series and parallel arrangements

13. Circuit Design
Gateway To Technology®
Unit 4 – Lesson 4.2 – Electronics
Image Resources
Microsoft, Inc. (2008). Clip Art. Retrieved November 20, 2008, from