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Q&A Select resistor for a diode

Suppose we have this circuit How do I pick a appropriate value for the resistor R1?

3 answers  ·  posted 3y ago by MissMulan‭  ·  edited 1y ago by Lorenzo Donati‭

Question LED-driver
#2: Post edited by user avatar Lorenzo Donati‭ · 2023-08-09T18:20:22Z (over 1 year ago)
Retagged.
voltage current
LED-driver
#1: Initial revision by user avatar MissMulan‭ · 2021-09-01T20:15:36Z (over 3 years ago) 
Select resistor for a diode
Suppose we have this circuit 

![see me](https://electrical.codidact.com/uploads/P8a2XdNvdBhPquYsTTmBptLR)

How do I pick a appropriate value for the resistor R1?
voltage current