WLD - 200mA driver za do 8 komada 1W LED dioda na 24VAC

<body topmargin=0 leftmargin=0 marginheight=0 marginwidth=0> <table cellpadding=0 cellspacing=0 border=0><tr> <td valign="top" colspan=2 height=80 BGCOLOR="#777777" TEXT="#080000" bgproperties="fixed" background="5f200500enpprp.gif"> <div> <A HREF="index.htm" TARGET="_top" TITLE="SPER Servis profesionalne elektronike Ra"><U><B>home</B></U></A><B>     |     </B><FONT SIZE="4" COLOR="#FFCC66" FACE="Trebuchet MS" ><B>SPER Servis profesionalne elektronike Rajak</B></FONT></div> <div> <A HREF="realizirani_uredaji.htm" TARGET="_top" TITLE="Realizirani uredaji"><U><B>Realizirani uredaji</B></U></A></div> <script defer src="respons.js"></script><P></P> </td> </tr><tr> <td valign="top" width=210 BGCOLOR="#FFFFFF" TEXT="#080000"> <div> WLD - 200mA driver za do 8 komada 1W LED dioda na 24VAC</div> <bR> <div> <B><IMG SRC="097a3260.gif" border=0 width="163" height="38" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></B></div> <bR> <div> <A HREF="shema_led_drivera_200ma.htm" TARGET="_top" TITLE="WLD shema"><U><B>shema</B></U></A></div> <bR> <div> <A HREF="realizirani_uredaji.htm" TARGET="_top" TITLE="Realizirani uredaji"><U><B>go back</B></U></A></div> <div style="text-align:CENTER; "><FONT SIZE="3" COLOR="#000000" FACE="Trebuchet MS">  <form method="get" action="http://www.google.hr/custom" target="google_window"> <table border="0" bgcolor="#99cc99"> <tr><td nowrap="nowrap" valign="top" align="left" height="32"> <bR> <br/> <input type="hidden" name="domains" value="www.sper.hr"></input> <label for="sbi" style="display: none">Unesite Vaše uvjete za pretraivanje</label> <input type="text" name="q" size="20" maxlength="255" value="" id="sbi"></input> </td></tr> <tr> <td nowrap="nowrap"> <table> <tr> <td> <input type="radio" name="sitesearch" value="" id="ss0"></input> <label for="ss0" title="Pretrai Web"><font size="-1" color="black">Web</font></label></td> <td> <input type="radio" name="sitesearch" value="www.sper.hr" checked id="ss1"></input> <label for="ss1" title="Trai www.sper.hr"><font size="-1" color="black">www.sper.hr</font></label></td> </tr> </table> <label for="sbb" style="display: none">Pošaljite obrazac za pretraivanje</label> <input type="submit" name="sa" value="Google pretraga" id="sbb"></input> <input type="hidden" name="client" value="pub-2650537455752702"></input> <input type="hidden" name="forid" value="1"></input> <input type="hidden" name="ie" value="ISO-8859-2"></input> <input type="hidden" name="oe" value="ISO-8859-2"></input> <input type="hidden" name="cof" value="GALT:#800080;GL:1;DIV:#37352E;VLC:99C9FF;AH:center;BGC:FFFFFF;LBGC:CAF99B;ALC:CC0000;LC:CC0000;T:44423A;GFNT:0066CC;GIMP:0066CC;LH:38;LW:163;L:http://www.sper.hr/logo.gif;S:http://;FORID:1"></input> <input type="hidden" name="hl" value="hr"></input> </td></tr></table> </form>  </FONT></div> <bR> <script async src="https://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js?client=ca-pub-2650537455752702" crossorigin="anonymous"></script>  <ins class="adsbygoogle" style="display:block" data-ad-client="ca-pub-2650537455752702" data-ad-slot="1584392831" data-ad-format="auto" data-full-width-responsive="true"></ins> <script> (adsbygoogle = window.adsbygoogle || []).push({}); </script> </td> <td valign="top" height=400 BGCOLOR="#FFFFFF" TEXT="#080000"> <div> <B>WLD - 200mA driver za do 8 komada 1W LED dioda na 24VAC</B></div> <div>      Predstavljamo vam linearni LED driver 200 mA. Bilo bi najjednostavnije uzeti jednu diodu i jedan otpornik i riješiti podešavanje struje. Međutim, tada imamo impulsnu struju koja ima špice, a i svjetlost LED diode je treperava. Dodavanjem elektrolita rješavamo treperenje LED diode i imamo prilično jednoliku struju, ali je plaćamo velikom disipacijom snage na predotporu (do 6W), a i svijetlost LED diode bi se mijenja sa napajanjem. Ako bi imali više LED dioda u seriji, gubitci bi bili znatno manji ali se tada višestruko pojačava ovisnost o promjeni napona napajanja. Kao rješenje se nudi i switching aplikacija, čija je cijena obično viša zbog upotrebe transformatora ili zavojnica. Naše rješenje se zasniva na upotrebi <A HREF="mosfet_predregulator.htm" TARGET="_top" TITLE="Mosfet predregulator"><U>mosfet predregulatora</U></A> i linearnog stabilizatora u spoju strujnog izvora. Disipirana snaga na mosfetu i linearnom stabilizatoru je konstantana i malo ovisi o promjenama napona napajanja. Bitno je smo da je vršna vrijednost napajanja barem 8V viša od potrebnog izlaznog napona. Na izlaz se može priključiti od jedne do 8 LED dioda. Ako se koristi do 4 LED diode, tada napajanje može biti i 15VAC. Izlazna struja je dovoljna za pogon 1W POWER LED dioda pri 50°C (uz odgovarajuće hladilo). Power LED diode ZLED W32180 (N32180) se mogu nabaviti preko IC Elektronike. Posebna karakteristika ovog LED drivera je upotreba lako nabavljivih elektroničkih dijelova. Otklanjanje bilo kakvog kvara je zbog toga lako i jednostavno.</div> <bR> <script async src="https://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js?client=ca-pub-2650537455752702" crossorigin="anonymous"></script>  <ins class="adsbygoogle" style="display:block" data-ad-client="ca-pub-2650537455752702" data-ad-slot="7117608876" data-ad-format="auto" data-full-width-responsive="true"></ins> <script> (adsbygoogle = window.adsbygoogle || []).push({}); </script> <bR> <div>      Karakteristike:</div> <bR> <div> <IMG BORDER="0" SRC="Symb075c00b700f000000000.gif" HEIGHT="16" WIDTH="24" ALIGN="bottom" HSPACE="0" VSPACE="0">napajanje: 24..30VAC-2..6VA <FONT SIZE="3" COLOR="#FF0000" FACE="Trebuchet MS" ><B>(15..30VAC)</B></FONT></div> <div> <IMG BORDER="0" SRC="Symb075c00b700f000000000.gif" HEIGHT="16" WIDTH="24" ALIGN="bottom" HSPACE="0" VSPACE="0">broj LED dioda: 1..8 1W LED dioda u seriji <FONT SIZE="3" COLOR="#FF0000" FACE="Trebuchet MS" ><B>(1..4 "1W" LED)</B></FONT></div> <div> <IMG BORDER="0" SRC="Symb075c00b700f000000000.gif" HEIGHT="16" WIDTH="24" ALIGN="bottom" HSPACE="0" VSPACE="0">izlazna struja: <B>200mA DC - konstantno i neovisno o naponu napajanja i broju LED dioda</B></div> <div> <IMG BORDER="0" SRC="Symb075c00b700f000000000.gif" HEIGHT="16" WIDTH="24" ALIGN="bottom" HSPACE="0" VSPACE="0">izlazni napon: 0..25VDC (ovisno o broju LED dioda)</div> <div> <IMG BORDER="0" SRC="Symb075c00b700f000000000.gif" HEIGHT="16" WIDTH="24" ALIGN="bottom" HSPACE="0" VSPACE="0">snaga po LED diodi: 0,6W</div> <div> <IMG BORDER="0" SRC="Symb075c00b700f000000000.gif" HEIGHT="16" WIDTH="24" ALIGN="bottom" HSPACE="0" VSPACE="0">iskoristivost: cca 70% za 4 LED diode, cca 82% za 8 LED dioda</div> <div> <IMG BORDER="0" SRC="Symb075c00b700f000000000.gif" HEIGHT="16" WIDTH="24" ALIGN="bottom" HSPACE="0" VSPACE="0">spajanje: rede stezaljke na pločici (po narudžbi mogu biti i rastavljive)</div> <div> <IMG BORDER="0" SRC="Symb075c00b700f000000000.gif" HEIGHT="16" WIDTH="24" ALIGN="bottom" HSPACE="0" VSPACE="0">disipacija regulatora: 1W bez obzira na broj priključenih LED dioda</div> <div> <IMG BORDER="0" SRC="Symb075c00b700f000000000.gif" HEIGHT="16" WIDTH="24" ALIGN="bottom" HSPACE="0" VSPACE="0">temperatura okoline: -25..50°C</div> <div> <IMG BORDER="0" SRC="Symb075c00b700f000000000.gif" HEIGHT="16" WIDTH="24" ALIGN="bottom" HSPACE="0" VSPACE="0">zaštita od kratakog spoja: DA - neograničeno</div> <div> <IMG BORDER="0" SRC="Symb075c00b700f000000000.gif" HEIGHT="16" WIDTH="24" ALIGN="bottom" HSPACE="0" VSPACE="0">kutija: otvorena za šinju 120*40*50 (d*š*v)</div> <div> <A HREF="shema_led_drivera_200ma.htm" TARGET="_top" TITLE="WLD shema"><U>shema</U></A></div> <bR> <div>      Cijena: 150 kn (€19,90). Garancija je 3 godine (ne pokriva udare visokog napona).</div> <div>      Na veće količine popust.</div> <bR> <bR> <div> <IMG SRC="6415ea70.jpg" border=0 width="350" height="167" ALT="200mA power LED driver na 24VAC za 1..8 1W led dioda" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <bR> <bR> <div>      Opcije izvedbe:</div> <bR> <div> <IMG BORDER="0" SRC="Symb075c00b700f000000000.gif" HEIGHT="16" WIDTH="24" ALIGN="bottom" HSPACE="0" VSPACE="0">Manja izlazna struja (npr. 100mA).</div> <div> <IMG BORDER="0" SRC="Symb075c00b700f000000000.gif" HEIGHT="16" WIDTH="24" ALIGN="bottom" HSPACE="0" VSPACE="0">Izvedba u zatvorenoj kutiji</div> <div> <IMG BORDER="0" SRC="Symb075c00b700f000000000.gif" HEIGHT="16" WIDTH="24" ALIGN="bottom" HSPACE="0" VSPACE="0">Vodonepropusna izvedba - zalivena sa izvodima</div> <div> <IMG BORDER="0" SRC="Symb075c00b700f000000000.gif" HEIGHT="16" WIDTH="24" ALIGN="bottom" HSPACE="0" VSPACE="0">Kartica bez kutije</div> </td> </tr></table></body>