Page 38 - The Basics IA by ETron Circuit Labs

ETron Circuit LabsLab 19 Electronic MetronomeObjective:In this Lab you will build an Electronic Metronome that will produce an adjustable “tic-tic” click used for keeping rhythm in music.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 WorkHere” Box to verify that your wiring is correct, and then proceed to Step 3.Step 3 – Do ExperimentTheory:Here is a two-transistor oscillator set up to make a tic- tic sound in the speaker. The potentiometer adjusts the bias on transistor Q1 and this in turn controls the speed of the turning on and off of transistors Q1 and Q2.36