Capacitor Foundations of Technology Capacitor © 2013 International Technology and Engineering Educators Association, STEM  Center for Teaching and Learning™

Download Capacitor Foundations of Technology Capacitor © 2013 International Technology and Engineering Educators Association, STEM  Center for Teaching and Learning™

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<ul><li><p>Foundations of Technology</p><p> Capacitor 2013 International Technology and Engineering Educators Association, STEMCenter for Teaching and Learning Foundations of Technology Teacher Resource Unit 4 Lesson 4</p><p> 2013 International Technology and Engineering Educators Association, STEMCenter for Teaching and Learning Foundations of Technology</p></li><li><p>Objectives:You will build a simple circuit to show that a capacitor stores electrical energy. You will be able to observe the LED get dimmer as the capacitor discharges. </p></li><li><p>Two basic typesCeramic diskElectrolyticHas positive and negative sidesFarads unit of measure (F)Microfarads(uF) and picofarads (pF)</p></li><li><p>You will need the following parts from your kit:Breadboard1000 ohms resistor (brown, black, red, gold)330 ohms resistor (orange, orange, brown, gold)1000uF capacitor100uF capacitor1 LED (light emitting diode)9 volt battery lead2 wires9 volt battery</p></li><li><p>Use this schematic to construct the experiment. 1000 ohm+-Flow of currentFlow of current9 voltsQuick Check: Your circuit should like this one.330 ohm+</p></li><li><p>This circuit will make a LED dim. When electron flow is present, the LED will be bright.Capacitors are able to store electrical energy.The larger the capacitor the more energy it is able to store.Electrons flow from the battery through the LED and resistors. Electrons will charge the capacitor.When the battery is removed, the energy stored in the capacitor will continue to light the LED until it has been discharged.</p></li><li><p>Start with the 1000uF capacitor in place.Connect the 9 volt battery.Observe the brightness of the LED.Disconnect the 9 volt battery.Observe what happens to the LED.Replace the 1000uF capacitor with the 100uF capacitor.Reconnect and then disconnect the 9 volt batteryObserve what happens to the LED.Troubleshooting:If the LED does not light up, check to make sure it is in correctly.Check the battery. Does it have voltage?Are there any breaks in the circuit?Is the capacitor in the right way?</p></li><li><p>By completing this experiment, you should have noticed the light from the LED grew dimmer as the capacitor discharged when the battery was removed.In complete sentences, write what you learned about a capacitor in a circuit.</p><p> International Technology Education AssocSlide #*TITLE SLIDE12/01/2009STEMCenter for Teaching &amp; Learning Engineering byDesign</p></li></ul>

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