current booster

Discussion in 'General Electronics Chat' started by pafrazier, Jan 28, 2012.

  1. pafrazier

    Thread Starter Active Member

    Jun 4, 2011
    57
    0
    Hi,

    If I have a 100 volts and .02 amps and want to get .5 amps how would I do that? I realize that I will have to sacrifice voltage do to the conversion. What circuit could I use to do this?

    Thanks
     
  2. jimkeith

    Active Member

    Oct 26, 2011
    539
    99
    A basic buck converter could easily covert your 2W @ 100V into 1.6W @ a reduced voltage (figuring 80% efficiency). 1.6W /0.5A = 3.2V. Good enough for LEDs.
     
  3. pafrazier

    Thread Starter Active Member

    Jun 4, 2011
    57
    0
    Hi Jim,

    Thanks for the response. I was looking at these circuits on wiki. Is there any website that gets into them a little deeper. What components to use to accomplish cetain conversions? Is there a min. current need for the Switched-mode power supply or linear regulater? I was looking at certain component but I could find min current input. Thanks
     
  4. MrChips

    Moderator

    Oct 2, 2009
    12,449
    3,365
    100V delivers 0.02A into a 5K-ohm load.
    If the load is changed to 200 ohm, you will get 0.5A. You do not sacrifice voltage.
     
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