| Electronics > Beginners |
| When current limiting resistors are needed with LED? |
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| rstofer:
--- Quote from: Vtile on April 27, 2018, 07:06:52 pm ---In the limits of the maximum values, which are typically given in form of Vf and If or Imax there is no difference if you feed the bare led with current or with voltage. What will happen is that the LED will dynamically adjust itself in a way that it pulls or pushes the amount of the missing component (V or I) (Compared to the I/V curve, which is derived this way). Edit. Removed the misleading part. If that is a good design practice is another topic. --- End quote --- Yes, the current and voltage will ride the curves. If the voltage goes up, the current goes up and in some areas of the curve it goes up a LOT for just a tiny increase in voltage. That's why it is described as non-linear. |
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