why use resistors with leds sorted by
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Admin11.08.2021

Driving an LED with or without a resistor

Also, if you have multiple LEDs in series, you only need one current limiting resistor, and it can be placed anywhere in the chain.
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Admin26.08.2021

Basics: Picking Resistors for LEDs

Aside: A little digging turns up a pdf on alkaline batteries from Energizer.
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Admin07.08.2021

Driving an LED with or without a resistor

Specialized types like high power LEDs may have somewhat different characteristics and requirements.
Admin11.08.2021

Why is it necessary to use a resistor in series with an LED?

To be safe we use a 120, or better, 150 Ohm resistor.
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Admin29.07.2021

Driving an LED with or without a resistor

All four lights are going to be on the same battery.
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Admin19.07.2021

Why do we use resistors? [The real quick reasons]

The resistor is also placed in series with the LEDs, and its resistance value is calculated such that it will draw approximately 3 volts as well.
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Admin04.09.2021

Why do we use resistors? [The real quick reasons]

8 V, while pure-green, blue, white, and UV LEDs have a Vf of about 3.
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Admin10.06.2021

Why do we use resistors? [The real quick reasons]

Lets assume, it all sums up to only 25 mA, that would be 3.
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Admin23.07.2021

led driver/resistor question

… If too much current flows through an LED it is destroyed.
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