project hearing aid

Discussion in 'The Projects Forum' started by syshanika, Apr 11, 2010.

  1. syshanika

    Thread Starter New Member

    Apr 11, 2010
    16
    0
    plsssssssss help
    i'm designing a hearing aid with
    lm356 as pre amplifier
    lm386 as power amp and
    la3607 as equalizer for frequency selection
    made it on a pcb
    circuit work bt have lot of hiss and noise
    wht can i do
    plssssssssss helpppp
     
  2. retched

    AAC Fanatic!

    Dec 5, 2009
    5,201
    312
    What are you using for filtering?

    If you post your schematic, you will get better help.

    That way, we can SEE what is going on.
     
  3. syshanika

    Thread Starter New Member

    Apr 11, 2010
    16
    0
    here are the pre amp and power amp diagrams both were taken frm internet
    i have seen tht lm358 has lot of noise is there ny ic which i can replace lm358 .wit out changing cht circuit as i have already made the whole circuit
    thnks
     
  4. retched

    AAC Fanatic!

    Dec 5, 2009
    5,201
    312
    Ok...Lets stop using this thread and just stick with the other.. It will be too confusing.
     
  5. syshanika

    Thread Starter New Member

    Apr 11, 2010
    16
    0
    hehe kk
    lets do it
    :)
     
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