Make Electronics:Part 3

Today I decided to start on Experiment #4 (Variable Resistance). For this experiment, we the book introuduced a new equipment called the potentiometer. A potentiometer can control the current and vary the resistance of the circuit. 

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These are the tabs that hold the potentiometer together
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This is the part of the potentiometer that turns so that you can increase and decrease the resistance
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This is my circuit that I made. The potentiometer didn’t seem to actually create a difference in the brightness of the LED like I thought it would.

However, when you used a multimeter to measure while spinning the disk around the numbers would change dramatically.

I think that potentiometers are used for dimming the lights. You probably have one on your light switch. It is either a disk or a bar that goes up and down.

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