Diode Pop & Crackle Suppressor

Discussion in 'General Electronics Chat' started by raghavanunm, Dec 6, 2015.

  1. raghavanunm

    Thread Starter Member

    Mar 21, 2007
    14
    0
    Guys,
    I have a question on the "diode pop & crackle suppressor" circuit that i have attached. Can you please answer what the purpose of capacitor is ? If diode is directing the current, why do we need the capacitor ?

    Thanks.
     
  2. dl324

    Distinguished Member

    Mar 30, 2015
    3,244
    622
    The capacitor blocks DC. The diode is clamping signal to the speaker to prevent "pops and crackles". Can't tell if it will have an adverse effect on speaker performance.
     
  3. Veracohr

    Well-Known Member

    Jan 3, 2011
    552
    76
    It removes any DC voltage from the signal, which reduces the speakers signal swing.
     
  4. crutschow

    Expert

    Mar 14, 2008
    13,016
    3,235
    That is a bogus circuit and would never be used in a real amplifier.
    It will clip any signal above a positive 0.6V, limiting the undistorted sound to an 8Ω speaker at about 20mW.
     
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