DC Fundamentals Unit 5 – Switches and Switching Concepts
Exercise 2 – Switching Concepts ..............................................................................................
EXERCISE OBJECTIVE
When you have completed this exercise, you will be able to demonstrate basic switch-controlled
circuits by using the trainer. You will use LEDs and a multimeter to verify your results.
DISCUSSION
- A switch is usually placed in a circuit in series between a power or signal source and a load.
- The switch has very little resistance when in a closed position, or ON.
- The switch has infinite resistance when in the open position, or OFF.