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Why use resistors with leds - Why do I need a resistor when using LEDs on an Uno?





A resistor is a non-polarised component.





They also have a much longer lifespan than an incandescent light bulb.






Why do LEDs need resistors?


The value given is the maximum allowable current.



The datasheet will usually indicate a further two values of forward voltage; the minimum forward voltage and the maximum forward voltage.


What Does A Resistor Do And Why Is It Important?



Why do LEDs need resistors?


Test first before soldering thinks up.


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Description: Some other common resistor types include the film resistor and the wire-wound resistor.

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Views: 2126 Date: 06.02.2022 Favorited: 4 favorites
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And that's exactly what happens if your power supply can supply enough current.
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Also remember that if a power supply isn't supplying a full load, the rated output voltage is often exceeded!
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The limiter may be placed anywhere in circuit.

Latest Comments

    +250reps
    So, how can a resistor help us with this problem?
    By: Keithley
    +689reps
    Thanks for anything you can help me with!
    By: Lura
    +209reps
    Resistors are in series whenever the flow of charge, or the current, must flow through components sequentially.
    By: Berlauda
    +376reps
    Does it matter what size resistor you use as long as it is over the amount you need?
    By: Ailin
    +54reps
    All the batteries will go all the way down to zero if you drain them that far, but doing so will result in leaking batteries or damaged rechargeable cells.
    By: Pistol
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