Demonstration Assessment of Light Emitting Diode LED Retrofit Apps1 Eere Energy Form

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in this video we're going to talk about leds light emitting diodes diodes that convert electrical energy into light energy these devices they stay cool they're not like other lamps that generate a lot of heat so they're very efficient at converting electrical energy into light energy now let's talk about the polarity of an led and how to connect it in the circuit so notice the two leads of the led the long side is the anode you want to connect that to the positive terminal of a battery the short side is the cathode so that should be connected to the negative terminal of a battery now of course you want to put a current limited resistor in series with the led in the battery otherwise if too much current is flowing through this led it could burn up which can be a problem so just keep that in mind here is the electrical symbol of a regular diode to draw the electrical symbol of a light emitting diode simply put two arrows emanating away from it on the left side we have the positive termin