high frequency amplifier

Discussion in 'General Electronics Chat' started by king40, Dec 27, 2013.

  1. king40

    Thread Starter Member

    Jul 17, 2013
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    0
    Hi friends

    I need circuit for frequency boost
    My frequency betwean 40hz to 3khz
    And i want boost this
    Very boost :D
    Thanks for any help
     
  2. shteii01

    AAC Fanatic!

    Feb 19, 2010
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    lots of words, only two pieces of actual information
     
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  3. king40

    Thread Starter Member

    Jul 17, 2013
    75
    0
    Hi shteii
    For example my vpp is 5v
    And my frequency is 600hz
    I want incerase my vpp to 12 or 9V whithout my frequency changed
    Thanks
     
  4. Ramussons

    Active Member

    May 3, 2013
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    What is the waveform? What is the Voltage Swing / Range of this 5 Volt signal?

    If it's Rectangular or Square 0 to 5 volts, just feed the 5V signal to a CMOS gate with a supply of 12 or 9 Volts.

    Or simply a single NPN transistor and 2 Resistors if Inversion is not an issue.

    Ramesh
     
    Last edited: Dec 28, 2013
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  5. king40

    Thread Starter Member

    Jul 17, 2013
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    thanks Ramesh

    yes waveform is Square (Micro Square Wave) and 0 to 5 volt.
    you have a circuit for your idea
    thanks
     
  6. crutschow

    Expert

    Mar 14, 2008
    13,024
    3,236
    One possibility is a CMOS CD4504 level shifter.
    Another is a comparator such as an LM339.
     
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  7. king40

    Thread Starter Member

    Jul 17, 2013
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    thanks
    but i know little about analog
    i need circuit or tutorial:(
     
  8. #12

    Expert

    Nov 30, 2010
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    6,818
    If your signal is entirely positive, you don't need the diode on the input.
     
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  9. king40

    Thread Starter Member

    Jul 17, 2013
    75
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    very thanks body
    this is increase 5v p-p to 12v p-p?
    and other question
    if i want boost my frequency
    how i can?:(
     
  10. bertus

    Administrator

    Apr 5, 2008
    15,648
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    Hello,

    How do you generate the frequency?

    Bertus
     
  11. crutschow

    Expert

    Mar 14, 2008
    13,024
    3,236
    The CD4504 is a digital circuit. You just connect 5V to power the input section (Vcc) and 9-12V to power the output section (Vdd). That will convert the 5V input signal to 9-12V at the output.
     
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  12. ian field

    Distinguished Member

    Oct 27, 2012
    4,415
    784
    If your signal source has decent current sink capability, you can use a cascade (common gate) MOSFET - that is the gate is connected to the 5V rail, the drain through RL to the 12V rail and the source driven directly by the output of your signal source - there is no current gain, so the source has to sink the same current as the load takes, but you get your 5V to 12V level translation.

    If the signal source can't handle (sink) the load current, you'll have to drive a MOSFET that can - chances are any common MOSFET will handle the 12V for the load, but the signal will be inverted.
     
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  13. king40

    Thread Starter Member

    Jul 17, 2013
    75
    0
    many thanks of all.it works
    now output vp-p is 12v
    and
    if i want to give boost to my frequency
    now how i can???
     
  14. bertus

    Administrator

    Apr 5, 2008
    15,648
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    Hello,

    Again, How is the frequency generated?
    If you use an oscillator, just change its timing.

    Bertus
     
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  15. king40

    Thread Starter Member

    Jul 17, 2013
    75
    0
    sorry i see your post now
    frequency generate form micro
    and wave is square
    thanks
     
  16. bertus

    Administrator

    Apr 5, 2008
    15,648
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    Hello,

    The frequency is likely being generated using delay loops in the micro.
    Changing the timing of the loops will change the frequency.

    I have no experience with micros.

    Bertus
     
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  17. king40

    Thread Starter Member

    Jul 17, 2013
    75
    0
    Thanks bertus
    No way exist to boost frequency with analog circuit?(analog components)
     
  18. bertus

    Administrator

    Apr 5, 2008
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  19. tubeguy

    Well-Known Member

    Nov 3, 2012
    1,157
    197
    Hello king40,

    What is the purpose for 'boosting' the frequency?
    Are you looking for some specific frequencies?
     
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  20. king40

    Thread Starter Member

    Jul 17, 2013
    75
    0
    Hi body
    My purpose is
    Powerful Frequency amplifier circuit
     
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