Monday, September 10, 2007

Lab_01 | Components in Series_three LEDs

When I added a yellow(third) LED in the series,
they didn't light.

Each LED needs about 2.5 volts to light.
That means three LEDs need about 7.5 volts.

But this curcuit's maximum voltage was 5 volts
because of 7805 5-volt voltage ragulator.

It didn't have enough voltage to light three LEDs.

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