Recent content by dinithm

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    TDA7498 100W+100w Diy (u-PCB+power supply)

    sorry ,I forgot Eagle schemaic and PCB files but you can try print top layer and bottom layer on PHOTO paper using LAzerprinter then transfer it to duble side copper board torner transfer method
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    I need a help about SG3525

    the transformer that I pick from another car amplifier working perfectly instead of my transformer so what can I do for my transformer, thank you
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    I need a help about SG3525

    this is the whole PCB and circuit
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    I need a help about SG3525

    I made SMPS for a car amplifier, but there is un expectable spike on it this is the waveform at IDLE 1A load heavy loads (<3A output) this is data of my transformer can u pleas tell me ,what is the reason of that matter.and what do I do to resettle this , thank you.
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    MINI amplifier

    power amp -2*TDA7294 70+70W class AB SMPS IR2153,IRF740 EI40 70khz audio processor TDA7315 microcontroler PIC16f887 - mikroc PIC compiler http://www.youtube.com/watch?feature=player_detailpage&v=UBRua71VcLQ http://www.youtube.com/watch?feature=player_detailpage&v=D0J3rIhycso
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    TDA7498 100W+100w Diy (u-PCB+power supply)

    Ok my friend, I'm not expert try this ,It can control maximum output currant
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    TDA7498 100W+100w Diy (u-PCB+power supply)

    I used screen print method to make circuit board with solder mask.
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    TDA7498 100W+100w Diy (u-PCB+power supply)

    AMPLIFIER Driver TDA7498(power s so36 package) output power 100+100W @8ohms 36V power supply 36V(39v max)single supply (approximately 7A max) logic supply 3.3V 100mA OK output-2x fullbridge
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    TDA7498 100W+100w Diy (u-PCB+power supply)

    POWER SUPPLY power output (230W - 270W) driver - sg3523 SMT(PUsh and pull) primary switching fet -(2x) IRF3205 core(EI33 PC40) switching frequency - 100khz pulse width 45% working voltage - 9v-16v output voltage - 36V regulated (unregulated 42V max @13.8v input)
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    12v 250w Car SMPS based off SG3525

    final.fully isolated batt gnd & amp gnd 100% working without noise best for TDA7294 bridge subwoofer amplifire
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    12v 250w Car SMPS based off SG3525

    final.fully isolated batt gnd & amp gnd 100% working without noise
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    12v 250w Car SMPS based off SG3525

    schematic of car DC/DC converter best for TDA7294 bridge 170w(RL=16ohms)
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    12v 250w Car SMPS based off SG3525

    i didn't draw schematic, share the schematic soon there some ground isolation problem,
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    Problem with IR2153 SMPS

    yes load resistance is 4.7 ohms
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    Problem with IR2153 SMPS

    first time turn on - it work fine voltage ok 14.7v, load 4.7ohms after 30sec - turned it off ,no heat no problem second time turn on - (load 4.7ohms) PCB burned AND fused, 2 fet (irf840) burned three times rebuilt it same result,
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