Amplifier picking out parts.

Discussion in 'General Electronics Chat' started by Seb1929, Feb 20, 2015.

  1. Seb1929

    Thread Starter New Member

    Feb 20, 2015
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    Hello! I'm a bit off a newbie and can someone help me pick out parts for this amplifier?

    [​IMG]
    I don't need the 50K potentiometer.
     
  2. #12

    Expert

    Nov 30, 2010
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    What? All the parts are labeled. The only thing left to the imagination is that the capacitors should be rated for at least 16 volts and what country you are in.
     
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  3. Seb1929

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    Feb 20, 2015
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    Should i use aluminium or ceramic capacitors?
     
  4. crutschow

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    Where did you get that schematic?
    It doesn't correspond to the data sheet I found.
     
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  5. Seb1929

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  6. #12

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    Yes. The big ones are aluminum and the small ones are ceramic.
    Another way to say this is, Try buying a 100 uf ceramic capacitor or try buying an aluminum 0.1 uf capacitor. Not likely you can do that.
     
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  7. Seb1929

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    Feb 20, 2015
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    Oki tnx.
     
  8. crutschow

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    That schematic is incorrect. Look at this data sheet (compare the output capacitor values).
     
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  9. Seb1929

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    Feb 20, 2015
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    Okay thank you!
     
  10. #12

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    Crutschow just named the difference.
    and the M only describes the plastic DIP package.
     
    Last edited: Feb 20, 2015
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  11. bertus

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    Apr 5, 2008
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    Hello,

    The difference between the TDA2822 and TDA2822M is that the TDA2822 is 16 pins and the TDA2822M is 8 pins.
    There is even a TDA2822D wich is in a SO8 housing.
    See the both attached datasheets to compare them.

    Bertus
     
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  12. Seb1929

    Thread Starter New Member

    Feb 20, 2015
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    Can i help finding a 470uF capacitors that are not either higher than 5MM or has a diameter of 5MM
     
  13. bertus

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    Hello,

    Where are you located?
    That way we can perhaps give you localized advice.

    Bertus
     
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  14. Seb1929

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    Feb 20, 2015
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    I live in Norway.
     
  15. bertus

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  16. Seb1929

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  17. Seb1929

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  18. bertus

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  19. Seb1929

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    Feb 20, 2015
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    Yeah, Is there any other solution instead of one 470uF? Or is there another amplifier instead of 2822M where i don't need as big capasitors?
     
  20. #12

    Expert

    Nov 30, 2010
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    The capacitors are dictated by the speaker impedance and the low frequency range.
    You can forfeit some low frequencies by choosing less capacitance.
    You can choose higher impedance speakers, but the penalty is that less power will be delivered because of the low voltage available.
     
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