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LM4780 2x60W
#1
<p>Evo dokumentacija:</p>
<p>&nbsp;</p>
<p>&nbsp;</p>
<p><a data-ipb='nomediaparse' href='https://docs.google.com/file/d/0B9rpdaRm93AndHNqYVVXU2hpUjg/edit?pli=1'>https://docs.google.com/file/d/0B9rpdaRm93AndHNqYVVXU2hpUjg/edit?pli=1</a></p>
<p>&nbsp;</p>
<p><a data-ipb='nomediaparse' href='http://profahmetccc.googlecode.com/files/LM4780_2x60w.zip'>http://profahmetccc.googlecode.com/files/LM4780_2x60w.zip</a></p>
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#2
<p>Simpatično...</p>
<p>Baci dokumentaciju ovde da je ne jurimo po webu.</p>
<p>Ovde će ostati sve dok postoji ova tema....</p>
Face up...make your stand and realise you're living in the golden years!
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#3
[attachment=5124:alt(bottom).png][attachment=5126:IMG_0223.JPG][attachment=5127:IMG_0224.JPG][attachment=5128:IMG_0227.JPG][attachment=5129:main.png][attachment=5132:Shematic.png][attachment=5134:ust(top).png][attachment=5136:yazi(composite).png]<br />
<br />
ima još jedna verzija sa termo-zaštitom koja je spojena preko MUTE funkcije,i kako se pojačalo zagrije zaštita aktivira MUTE,čim se pojačalo ohladi pojačalo nastavlja dalje deaktivacijom MUTE funkcije.


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.pdf   alt(bottom).pdf (Size: 22,81 KB / Downloads: 20)
.txt   Partlist.txt (Size: 536 bytes / Downloads: 13)
.txt   Read.txt (Size: 65 bytes / Downloads: 11)
.pdf   ust(top).pdf (Size: 104,43 KB / Downloads: 14)
.pdf   yazi(composite).pdf (Size: 264,56 KB / Downloads: 12)
Chop your own wood and it will warm you twice
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#4
<p>Da primetio sam da ima jedna varijanata sa dvoslojnom pločom i jedna sa jednoslojnom...</p>
Face up...make your stand and realise you're living in the golden years!
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#5
<p>Ako zelim uraditi ovu plocicu bez zastitu trebam iskoristite samo alt(botom) pdf file ili ipak moram je raditi obostrano?</p>
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#6
<blockquote class="ipsBlockquote" data-author="stefanjane" data-cid="14416" data-time="1386800017">
<div>
<p>Ako zelim uraditi ovu plocicu bez zastitu trebam iskoristite samo alt(botom) pdf file ili ipak moram je raditi obostrano?</p>
</div>
</blockquote>
<p>Moras je uraditi dvostrano.</p>
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#7
<p>nisam rekao da je neka od ovih pločica sa ili bez termo-zaštite nego da takva postoji.</p>
<p>&nbsp;</p>
<p>na toj pločici (šemi) dodati su par tranzistora koji su vezani na MUTE kolo i podizanjem temperature oni uključuju MUTE funkciju pa pojačalo ne pojačava tj ne reprodukuje zvuk uopšte. ta pločica koju sam vidjeo rađena je jednoslojno,treba potražiti na internetu.</p>
Chop your own wood and it will warm you twice
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#8
<p>evo jedna rekao bi dobro osmišljena pločica (bez termo-zaštite)</p>
<p>&nbsp;</p>
<p>&nbsp;</p>


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.pdf   narrow2LM4780 dual pcb.pdf (Size: 17,33 KB / Downloads: 55)
.pdf   narrow2LM4780 raspored.pdf (Size: 26,29 KB / Downloads: 42)
.pdf   narrow2LM4780 SCH.pdf (Size: 13,88 KB / Downloads: 36)
.pdf   narrow2LM4780gornja stampa.pdf (Size: 10,25 KB / Downloads: 26)
Chop your own wood and it will warm you twice
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#9
<p>evo i jedna sa paralelnim vezivanjem - mogu misliti kako bi to imalo snage i kako bi zvučalo u mostu:</p>
<p>&nbsp;</p>
<p>&nbsp;</p>


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.pdf   lm4780.pdf (Size: 93,23 KB / Downloads: 63)
Chop your own wood and it will warm you twice
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#10
<p>nađoh ga:&nbsp;<a data-ipb='nomediaparse' href='http://www.mhennessy.f9.co.uk/microamp/index.htm'>http://www.mhennessy.f9.co.uk/microamp/index.htm</a></p>
<p>&nbsp;</p>
<p>pročitajte sve i vidite kako je čovjek ovo osmislio (već znam trojicu kojima će se dopasti kako je čovjek odradio pločicu pojačala Smile ) a pred kraj je opisano i kako je osmišljena i kako radi termo-zaštita. ali:</p>
<p>&nbsp;</p>
<blockquote class="ipsBlockquote">
<p><span style="color:rgb(68,68,68);font-family:Arial, Helvetica, sans-serif;text-align:justify;background-color:rgb(252,252,252);">Finally, because of the compact dimensions, heat was likely to be a problem. This means that some form of thermal cutout is required. But note that this isn't to protect the IC - </span><span style="color:#006400;"><span style="font-family:Arial, Helvetica, sans-serif;text-align:justify;background-color:rgb(252,252,252);"><strong>these have comprehensive inbuilt protection and are more than capable of looking after themselves. </strong></span></span><span style="color:rgb(68,68,68);font-family:Arial, Helvetica, sans-serif;text-align:justify;background-color:rgb(252,252,252);">Rather, this is to protect&nbsp;</span><em>people</em><span style="color:rgb(68,68,68);font-family:Arial, Helvetica, sans-serif;text-align:justify;background-color:rgb(252,252,252);">&nbsp;who might come into contact with the amplifier. As mentioned, the top panel forms the heatsink so the temperature of this should be kept to safe values!</span></p>
</blockquote>
<p>&nbsp;</p>
<p>kako vidim može se koristiti bilo koja pločica od gore navedenih a termo-senzor na zasebnoj i samo "nakačiti" na onu od pojačala. &nbsp;sa smps napajanjem ovo stvarno može biti mini-amp,i veličinu-masu mu samo još određuje napon napajanja i željena snaga.</p>
<p>&nbsp;</p>
<p>[attachment=5318:MicroAmp napajanje.gif]</p>


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Today, 10:01 PM

Chop your own wood and it will warm you twice
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#11
Evo jedne plocice ovog pojacala Smile ja pravio.


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06-09-2014, 08:46 PM

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#12
šema,dokumentacija,opis,snaga,način izrade pločice...?
.
pločica ti dobro izgleda, nema šta!
Chop your own wood and it will warm you twice
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#13
Bravo!
Popravljaš se. Smile
Samo još da je izbušiš...
Face up...make your stand and realise you're living in the golden years!
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#14
Radio po ovom nacrtu i vec sam probao radi Smile toner postupak vidi se da je malo pozutila od pegle


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06-09-2014, 10:14 PM

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#15
evo u pdf formatu ploćica.


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.pdf   pcb orjinal boyut.pdf (Size: 122,05 KB / Downloads: 23)
.doc   pcb orjinal boyut.doc (Size: 45,5 KB / Downloads: 12)
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#16
Evo i shema Pavela Dudeka. Na više sam mjesta pročita da je to odlična izvedba.


.pdf   PA03_instr_manual.pdf (Size: 709,87 KB / Downloads: 69)
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#17
Malo je ekstremno ovo što je ovako paralelizovao otpornike...
Dobro je što je time izbegao keramičke, ali je to malo veća površina pa nisam siguran da li je zbog toga podložna smetnjama...
Inače, sviđa mi se. Smile
Face up...make your stand and realise you're living in the golden years!
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#18
Nemojte stavljati male hladnjake , puno se grije Smile


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06-10-2014, 06:02 PM
06-10-2014, 06:01 PM

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#19
(06-10-2014, 01:03 PM)danibosn Wrote: Evo i shema Pavela Dudeka. Na više sam mjesta pročita da je to odlična izvedba.

hvala ti za ovaj dokument! da li je Pavel podijelio i nacrt pločice za ovaj projekat ili ga je ipak zadržao za sebe?

imam nekoliko ovih LM4780 kola,možda bi mogao uraditi ovako nešto - svakako izgleda zanimljivo!
Chop your own wood and it will warm you twice
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#20
Ako nemas lm4780 naruci od TI sample Smile
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