Capacitance needed to stabilize a voltage pulse

  • #1
Daniel Floyd
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ok i need to know the value of the capacitor which i need.

i have a pulse voltage of 6mV which i want to stabilise to create a voltage which will power a small L.E.D. i currently have a bridge rectifier and i know i need a capacitor but what would the value of this capacitor be.
 

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  • #2
davenn
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6mV isnt going to power a LED... LED's are current driven ... ie. you need a constant current at a given voltage the common 5mm diameter LEDs require ~ 20mA

you had better expand a bit on where your 6mV is coming from
you are really going to need a few volts or so

Dave
 
  • #3
berkeman
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ok i need to know the value of the capacitor which i need.

i have a pulse voltage of 6mV which i want to stabilise to create a voltage which will power a small L.E.D. i currently have a bridge rectifier and i know i need a capacitor but what would the value of this capacitor be.

Maybe he means 6V pulse like in his old thread?

https://www.physicsforums.com/showthread.php?t=622069

.
 
  • #4
davenn
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