linear amplifier

Discussion in 'The Projects Forum' started by ol'trusty, Oct 30, 2009.

  1. ol'trusty

    Thread Starter Member

    Sep 9, 2009
    48
    0
    Hi guys
    I am interested in building an amplifier for sine wave input from a function generator . I would like the output to be 50v and that it would work at all frequencies.
    Does anyone have a link or a schematic I could look into ? maybe the gain can be adjustable ?

    Hope this is possible

    Thanks in advance

    Trusty
     
  2. mik3

    Senior Member

    Feb 4, 2008
    4,846
    63
    An op amp followed by a transistor ans with the transistor included in the feedback loop pf the op amp is an easy approach. You can have gain between a range of frequencies but not at all the frequencies. What frequencies are you interested in?
     
  3. studiot

    AAC Fanatic!

    Nov 9, 2007
    5,005
    513
    You also need to define the impedance you are expecting to work into
    50 ohms? 600ohms? or what
     
  4. Papabravo

    Expert

    Feb 24, 2006
    10,135
    1,786
    Most linear amplifiers at RF frequencies operate over a narrow bandwidth with tuned circuits. Is that what you are after?
     
  5. bountyhunter

    Well-Known Member

    Sep 7, 2009
    2,498
    507
    I would like to see that....:p
     
  6. ol'trusty

    Thread Starter Member

    Sep 9, 2009
    48
    0
    Thanks for the replys , but my knowledge might not be sufficient to understand all of the parameters. Maybe I should start with something simple that will amplify the low frequencies . maybe 1 -100 hz.
     
  7. ol'trusty

    Thread Starter Member

    Sep 9, 2009
    48
    0
    How about at least being to hear the frequencies with a speaker.. can someone guide me through it or post a schematic ?
    Thanks
     
  8. Wendy

    Moderator

    Mar 24, 2008
    20,764
    2,534
    Speakers means either 8Ω or 4Ω (or something else altogether, as speakers come in many formats and specs). You want something in the 10Hz-20Khz range, since that is around the min/max for exceptional hearing. Basically an audio amplifier.
     
Loading...