Sunday, March 18, 2012

Power Amplifier with TDA2050


This is not an ordinary project, but an attempt to make a PCB that is suitable for TDA2050 and LM1875 and has all the necessary circuitry on board - power supply, speaker protection,  delayed turn-on and fast turn-off. This is achieved using the convenient uPC1237 IC.




TDA2050 and LM1875 are pin to pin compatible, the differences in their schematics are the values of a couple resistors and one capacitor. All this allows to make an universal circuit board, suitable for any of these two ICs.





PCB with reversed inscription :)




Later there will be a link for downloading project files.

Update: April 6, 2012

The amplifier is ready. Here some more pictures:




And here is the link for downloading project files: TDA2050.rar
Use it on your responsibility.

10 comments:

  1. plz tell me what is the output watt

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    Replies
    1. It is 2x30W, but it depend of the power supply voltage and the impedance of the speakers connected to the output. Read the datasheets of the IC's - you will find tons of useful info there.

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  2. can u send the part list of this project

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  3. Hello!!!! Sir, Greetings. :D Can you please provide the components list of this project? I am going to make this project.

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    Replies
    1. Here
      Part Value Package

      B1 KBU8M FBU4
      C1 100nF C050-024X044
      C2 100nF C050-024X044
      C3 1000uF E5-10,5
      C4 1000uF E5-10,5
      C6 2.2uF C050-075X075
      C7 220nF C050-030X075
      C8 22uF E3,5-8
      C9 100nF C050-024X044
      C10 100nF C050-024X044
      C11 1000uF E5-10,5
      C12 1000uF E5-10,5
      C13 4.7uF E2,5-6
      C14 2.2uF C050-075X075
      C15 220nF C050-030X075
      C16 22uF E3,5-8
      C17 4700uF E7,5-18
      C18 4700uF E7,5-18
      C19 47uF E2,5-7
      C20 22uF E3,5-8
      C21 22nF C050-025X075
      D5 1N4148 DO35-7
      D6 1N4004 DO41-10
      D7 BZX85C12V DO41Z10
      H1 MOUNT-PAD-ROUND3.0 3,0-PAD
      IC1 LM1875 T05D
      IC2 LM1875 T05D
      IC3 UPC1237 SOP8
      IN 6410-02
      IN1 6410-02
      J1 OUT1 AC2
      J2 OUT2 AC2
      J3 AC AC3
      JP1 JP1
      K1 G2R2 G2R2
      LED 6410-02
      LED2 LED5MM
      LED3 6410-02
      R1 1k 0207/2V
      R2 20k 0207/12
      R3 22k 0207/7
      R4 1M 0207/7
      R5 1R 0414V
      R6 1k 0207/2V
      R7 20k 0207/12
      R8 22k 0207/7
      R9 1M 0207/7
      R10 1R 0414V
      R11 2k2 0207/7
      R12 120k 0207/7
      R13 120k 0207/10
      R14 56k 0207/7
      R15 9k1 0207/7
      R16 10k 0207/7
      R17 92k 0207/10
      R18 330R 0207/10
      R19 68k 0207/7
      R20 3k9 0207/10
      R21 10k 0207/7
      T2 MPSA42 TO92-EBC

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  4. Nice toroidal transformer? Where did you get it from?

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  5. This comment has been removed by the author.

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  6. This comment has been removed by the author.

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  7. Привет, не могу скачать печатную плату, ссылка не работает, пришлите пожалуйста на constantinnosov@yandex.ru

    Hi, I can not download the printed circuit board, the link does not work, please send me at constantinnosov@yandex.ru

    ReplyDelete