LED. I am newbie to electronics. Basically I developed a mini circuit just to understand concept?

Question

...  of electronic circuit. What I did was I developed a circuit with 3Volt AA battery and 1 LED. The LED lighted up. When I increased the number of LEDs to two, the second LEDs didn't light up.

So, I increase the number of battery so that it became 6Volt. The two LEDs light up fine. Then I added the third one, but only two light up and the third one didn't. Also I noticed that the brightness of the light is decreased when I add the third one.

For your information, I connected the LED in series. My question is, how can I determine the number of LEDs can be used for specific volt? I understand that LED is not a resistor, so why the volt dropped from LED to LED in series and how to determine this?

I did know the V=IR thingy. Thanks

Answer

V=IR does not apply directly to an led because it is not a linear resistance. Here is a free course in the basics:  www.phy.davidson.edu/instrumentation/NEETS.htm

LED. I am newbie to electronics. Basically I developed a mini circuit just to understand concept?

Answers (1)