analogue amplifier activated by radio frequency

Discussion in 'General Electronics Chat' started by ali8tor, Feb 26, 2013.

  1. ali8tor

    Thread Starter Member

    May 29, 2012
    43
    0
    hi

    can analogue amplifiers be activated with radio frequency ?


    thanks:)
     
  2. Wendy

    Moderator

    Mar 24, 2008
    20,766
    2,536
    Not sure what you mean by that question. I sounds as if you are talking a form of Radio Control, which is pretty routine.

    I am moving this into the electronics chat, where it is a better fit.
     
  3. #12

    Expert

    Nov 30, 2010
    16,343
    6,827
    Sure they can. Just lay your Cell phone near the unused inputs of a home stereo system.
     
  4. DangerousBill

    Active Member

    Jul 21, 2010
    30
    1
    You mean, can amplifiers be powered by ambient RF? The answer is yes, and it's becoming a popular way to power things like remote sensor transmitters, etc.

    I don't have a circuit at hand, but I experimented with RF-powered amps back in the 1950s, when the transistors were first sold to the public.
     
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