Page 40 - The Basics IA by ETron Circuit Labs

ETron Circuit LabsLab 20 Electronic MotorcycleObjective:In this Lab you will build an Electronic Motorcycle circuit that will produce a sound that mimics a motorcycle speeding up and slowing down.Step 1 – Take InventoryUsing the Parts Inventory as shown on the right under the “Here’s What You’ll Need” section, place each part needed for this experiment on its corresponding drawing. Observe the schematic symbol for each part. Make sure that you have all the parts ready before you begin Step 2.Step 2 – Build the CircuitUsing the Schematic Diagram and the picture of the completed lab, build the lab experiment with the electronic components. Use the “Check Your Work Here” Box to verify that your wiring is correct, and then proceed to Step 3.Step 3 – Do Experiment Theory:In this Lab you have a typical two-transistor oscillator using a PNP(2N3906) transistor and a NPN(2N3904) transistor with a potentiometer to control the speed of oscillation. The frequency of oscillation is low so it sounds like a motorcycle speeding up and slowing38