ShinedBrass
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Hello all,
I am working on a project involving 7 segment LEDs but have a little problem with a calculation. Normally when dealing with one LED I would use.
Input Voltage Less Led voltage * forward current and it works great but with this particular beasty I end up with this:
Iv = 3.3v
Lv = 3.3v
fc = 10ma
(Iv - Lv) * fc would be (3.3 - 3.3) = 0 * 10ma = 0
So my question is do i use a resistor with this Led or just jam in a bit of wire, or is it the case that when the voltages negate you would add the current value as ohms ?
I am working on a project involving 7 segment LEDs but have a little problem with a calculation. Normally when dealing with one LED I would use.
Input Voltage Less Led voltage * forward current and it works great but with this particular beasty I end up with this:
Iv = 3.3v
Lv = 3.3v
fc = 10ma
(Iv - Lv) * fc would be (3.3 - 3.3) = 0 * 10ma = 0
So my question is do i use a resistor with this Led or just jam in a bit of wire, or is it the case that when the voltages negate you would add the current value as ohms ?