Electronics - Diodes and Applications - Discussion
Discussion Forum : Diodes and Applications - General Questions (Q.No. 9)
9.
What is the current through the LED?
Discussion:
35 comments Page 3 of 4.
Raja said:
1 decade ago
Is somebody ask how do we know on which color led it is then?
Sujitha said:
1 decade ago
How to find led drop voltage?
Akash said:
1 decade ago
What is voltage drop of led?
Garry said:
1 decade ago
When current flowing through led, due to internal resistance voltage drop across led.
Garry said:
1 decade ago
Led resistance varies with voltage {IV char}.
Arunvijay said:
10 years ago
LED drop voltage is constant or varies according to temperature.
Kiran said:
10 years ago
Voltage drop is varied for different colour of led lights.
Rajan said:
9 years ago
@Uma, normally we will calculate resistance after we get the current and voltage. Most semicolons have the different behaviour of I\V curve which actually the resistance curve. In this case, Red Led typically has Vf of min 1.5v. So current calculated as (6-1.5)/330 = 13 mA.
i.e resistance on Diode = 1.5/0.013 = 115 ohm. From here we can anticipate max power loss and heat loss. If too much and the resistance in series can be adjusted.
i.e resistance on Diode = 1.5/0.013 = 115 ohm. From here we can anticipate max power loss and heat loss. If too much and the resistance in series can be adjusted.
Arun kumar R said:
9 years ago
Is every component has some drop voltage?
Pradeep said:
8 years ago
Yes, its correct there is a drop across LED.
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