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Monday 2 February 2015

How to Turn On an LED Using Battery?

by realfinetime  |  in LED at  03:41

          I have found many electronics beginners connecting LED directly to battery. They are not aware about the aftereffects of connecting LED to voltage source directly. LED get damaged if LED is directly connected to voltage source because of the high current that flows through the LED. Since the resistance of LED is very low, a large current will flow through the LED which will permanently damage the LED. To avoid this problem, we are using a current limiting resistor in series to the LED. Value of the current limiting depends on the type of LED. Normally resistors of 1K is connected as current limiting resistors. Circuit is done as shown in the following diagram.


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All the circuits, published in this blog is only after testing and getting proper results in my private lab. When you try these circuits, you should check the supply voltage, polarity of components, presence of childrens nearby and shorts in the circuits. This website will not be responsible for any harm happened to you or your components caused by your carelessness.

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