Ask a Question

Why do you put a resistor before an LED?

0 votes
by (2.6k points)
Why do you put a resistor before an LED?

1 Answer

0 votes
by (500 points)
The simplest circuit to power an LED is a voltage source with a resistor and an LED in series. Such a resistor is often called a ballast resistor. The ballast resistor is used to limit the current through the LED and to prevent that it burns.Feb 5, 2012

Related questions

0 votes
1 answer
Why does an LED need a resistor?
asked Dec 2, 2020 by resistors (1.8k points)
0 votes
1 answer
Why use a resistor with an LED?
asked Nov 28, 2019 by resistor (2.6k points)
0 votes
0 answers
What happens if you don't use a resistor with an LED?
asked Dec 2, 2020 by resistor (2.6k points)
0 votes
1 answer
Can you dim an LED with a resistor?
asked Nov 28, 2019 by resistor (2.6k points)
0 votes
1 answer
Does an LED always need a resistor?
asked Jun 29, 2021 by resistor (2.6k points)
0 votes
1 answer
Where does the resistor go in an LED circuit?
asked Jun 30, 2021 by negativesides (120 points)
0 votes
1 answer
Do LED trailer lights need a resistor?
asked Nov 28, 2019 by resistor (2.6k points)
0 votes
1 answer
How do you control an LED matrix?
asked Dec 2, 2020 by resistors (1.8k points)
0 votes
0 answers
How do you calculate the resistance of an LED?
asked Dec 2, 2020 by resistor (2.6k points)
0 votes
1 answer
How do you calculate a resistor for an LED?
asked Dec 2, 2020 by resistor (2.6k points)
Snow Theme by Hotenda
Powered by Question And Answer
...