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 2 of 4.
Ganesh.s said:
1 decade ago
For what 1.5v is subtract from the 6v ..?if the led drop voltage did't not given then .how it will subtract..?
Ganesh.K said:
1 decade ago
I = V/R
R = 330 , V = 6 - 1.5V (LED drop voltage) So V = 4.5V
I = 4.5/330
I = 0.013 A or 13 mA
R = 330 , V = 6 - 1.5V (LED drop voltage) So V = 4.5V
I = 4.5/330
I = 0.013 A or 13 mA
Garry said:
1 decade ago
When current flowing through led, due to internal resistance voltage drop across led.
Sandeep said:
1 decade ago
1.5 is substaract for Red Led only? if there is Yellow Led then will we subtract 2 ?
Jyoti prasad said:
6 years ago
In series, the current remains the same.
So I = V1/R1 = 6/330 = 18 mA.
So I = V1/R1 = 6/330 = 18 mA.
(3)
Engr Riri said:
3 years ago
Approx. Voltage @LED (red) = 1.7V.
(6V - 1.7V)/330 ohms = 13.03mA.
(6V - 1.7V)/330 ohms = 13.03mA.
(4)
Arunvijay said:
10 years ago
LED drop voltage is constant or varies according to temperature.
Raja said:
1 decade ago
Is somebody ask how do we know on which color led it is then?
Kiran said:
10 years ago
Voltage drop is varied for different colour of led lights.
Ganesh P said:
1 decade ago
LED voltage drop is 1.5V..... U need to remind this..
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