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Thread: 400w DARLİNGTON AMPLİFİCATOR 2 ohm STABLE

  1. #1
    diysmps Senior Member erhan739's Avatar
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    Cool 400w DARLİNGTON AMPLİFİCATOR 2 ohm STABLE

    Hİ there, i'm posting a darlington amp for al diyers. all files attached. enjoy!
    give 2x50v take 400w give'n take simply.
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    diysmps Member
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    because they never place the scheme?

  3. #3
    diysmps Senior Member Lira's Avatar
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    Hi, i have one doubt of this amplifier; a 380VA toroid transformer (37V 0 37V 10A) is suficient for two channels?

    Thanks in advance

    Lira
    Last edited by Lira; 04-25-2011 at 01:17 PM. Reason: wrong word
    Studying electronic engineering
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  4. #4
    diysmps Senior Member erhan739's Avatar
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    lira, your transformer is good but current is a bit low, you can work half load

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    diysmps Senior Member Lira's Avatar
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    Thanks for your quick reply,

    I build one for 2 channels driving 4ohms speaker each, the sound is very good but there is a hiss noise that im not identifing where it came from, do you have any idea?

    Thanks in advance
    Studying electronic engineering
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  6. #6
    diysmps Senior Member erhan739's Avatar
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    LIRA, ı must know where do you using this... in a car or home or etc... and how to driving sound... by a preamplifier or directly.... becaue this circuit tried on my location diffrent builders they haven't any problem but ı'll care of this case.

  7. #7
    diysmps Senior Member Lira's Avatar
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    I'm using this pr amplifier http://construyasuvideorockola.com/d_premic.php with a little modification, i just ommited the mic input on the circuit, I tried using TL072 and NE5532, its connected to my computer via Maudio Delta, the PSU for the preamplifier is separeted, +15 0 -15 regulated with LM7815 and LM7915. The main power supply is that toroid transformer from the last post with 20000uf per rail, and rectified with MUR860 diodes. I have checked the cables and all the connections and i dont know why i still have that noise. Im considering changing the TIPS. The use for this is 2 PA Boxes with each one with 1 15'Woofer, 100w driver and 50w tweeter (all from Selenium).

    Thanks for your attention
    Studying electronic engineering
    Fanatic for audio
    Crazy for biiiiig speakers

  8. #8
    Quote Originally Posted by Lira View Post
    I'm using this pr amplifier http://construyasuvideorockola.com/d_premic.php with a little modification, i just ommited the mic input on the circuit, I tried using TL072 and NE5532, its connected to my computer via Maudio Delta, the PSU for the preamplifier is separeted, +15 0 -15 regulated with LM7815 and LM7915. The main power supply is that toroid transformer from the last post with 20000uf per rail, and rectified with MUR860 diodes. I have checked the cables and all the connections and i dont know why i still have that noise. Im considering changing the TIPS. The use for this is 2 PA Boxes with each one with 1 15'Woofer, 100w driver and 50w tweeter (all from Selenium).

    Thanks for your attention

    Very nice

    Can you post some pictures?

  9. #9
    diysmps Senior Member erhan739's Avatar
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    oh man, you're on the our job! i like your working style and i must see your pictures because ı'm interesting beyma like you

  10. #10
    diysmps Senior Member Lira's Avatar
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    Ok, i think i cam post some pictures on the weekend, I'm bulding another pre amp, using a pcb that was built by a friend, and I have ordered some new tips 142 and 147, hope it will come by wednesday, hope it will fix the hiss, I,ll post the results. I just changed to amplifiers 2 years ago, and i'm facing a lot of throuble because of lack of experience, but i like it very much. I used to build my own speakers.

    Thanks
    Studying electronic engineering
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