2n5486 replacement for 2n5457?

Discussion in 'General Electronics Chat' started by Bigbizkit, Sep 27, 2016.

  1. Bigbizkit

    Thread Starter Member

    Oct 29, 2015
    44
    1
    Hi guys...
    So i made this orange squeezer compressor,
    Instead of the required 2n5457, i used a 2n5486 transistor cuz the 5457 is hard to find.
    I can say that the project is working but i aint sure if its working like it should be.
    Or maybe it just turn into a booster.
    I couldnt tell if there really is a compression.
    What do you think guys? Is it ok to use a 5486?
    Thak you so much!
     
  2. AlbertHall

    Well-Known Member

    Jun 4, 2014
    1,968
    388
    There is quite a difference in the zero Vgs current between the two but, if I understand the circuit correctly, Q2 is there to offset that voltage anyway, so it should be OK.
     
  3. ian field

    Distinguished Member

    Oct 27, 2012
    4,415
    784
    An entirely different approach is using an audio amp chip with DC volume control. Some BTL types can be run with the 2 outputs single ended - you can use one for the signal and the other driving a charge pump for the control voltage.

    The old favourite off the shelf chip was the CA3080 - nowadays its the LM13700.
     
  4. Brevor

    Active Member

    Apr 9, 2011
    279
    54
    Last edited: Sep 28, 2016
  5. ian field

    Distinguished Member

    Oct 27, 2012
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    A JFET that I think is made for that kind of job is the NS J111 - 113 family. Its a bit misleading as its not a 2S prefix part number (the 2SJ113 is a power device).

    BTW: Do you have a PDF of the Orange Squeezer schematic?
     
  6. Brevor

    Active Member

    Apr 9, 2011
    279
    54
    Here you go. (sorry, I dont have it in PDF)
    OSQschematic.gif
     
  7. Bigbizkit

    Thread Starter Member

    Oct 29, 2015
    44
    1
    This is from general guitar gadget orange squeezer schematic.
     
  8. Bigbizkit

    Thread Starter Member

    Oct 29, 2015
    44
    1
    Here you go.
     
  9. ian field

    Distinguished Member

    Oct 27, 2012
    4,415
    784
    Thanks.
     
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