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Question about Voltage Amplifier

Discussion in 'Electronic Basics' started by donghun, May 16, 2005.

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  1. donghun

    donghun Guest

    Hi...I need some advice about voltage amplifier.
    I want to amplify input signal to 100Vpp.
    The input signal is 5 Vpp sine or cosine signal and bandwidth is under
    the 20Mhz. Simple scheme is in the below.

    +5V(DC) +100V or Over
    | |
    ------- --------- ----------------------
    |source |-----|Amplifier|--------|Load(about 10Mohm~Over|
    ------- --------- ----------------------
    | |
    -5V(DC) -100V or Over

    If somebody knows a simple device for Amplifier, please let me know.
     
  2. Bob Monsen

    Bob Monsen Guest

    Use a transformer.
     
  3. donghun

    donghun Guest

    Sure, simply I can use a transformer. But I want to adjust output
    voltage range between 0 to 100 Vpp.
     
  4. Chris

    Chris Guest

    Mr. Monsen's idea is best. Use a transformer, and vary the amplitude
    of your 5V pk. signal to the transformer primary to get 0-100V pk. at
    the secondary.

    By the way, you might also want to take load capacitance into
    consideration. Even 10pF of load capacitance will dissipate watts of
    power at the frequencies of interest.

    Good luck
    Chris
     
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