From: "Saved by Internet Explorer 11"
Subject: =?Windows-1252?Q?Halbbr=FCckengegentaktwandler?=
Date: Mon, 20 Jan 2014 10:29:20 -0800
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Content-Location: file:///C:/Users/R%26D%201/Documents/Research/Power%20Supplies/Halbbr%FCckengegentaktwandler_files/hgw_smps_in_e_files/hgw_control.js

// SMPS-Hgw JavaScript controls user's input

//checks Ue_min for input errors
function chkHgwFormUe_min() {
  var sUe_min=3Ddocument.Formular.Ue_min.value;
  var Ue_min=3DparseFloat(sUe_min);
  var Ue_max=3DparseFloat(document.Formular.Ue_max.value);
  var Ue=3DparseFloat(document.Formular.Ue.value);
  if =
((isNaN(sUe_min)=3D=3Dtrue)||(Ue_min<=3D0)||(sUe_min=3D=3D"")||(sUe_min.c=
harAt(0)=3D=3D" ")) {
    Ue_min=3D360.0;
    document.Formular.Ue_min.value=3DUe_min;
  }
  if (Ue_min>Ue_max) {
    document.Formular.Ue_max.value=3DUe_min;
  }
  if (Ue_min>Ue) {
    document.Formular.Ue.value=3DUe_min;
  }
  setHgwVorschlagN1N2();//set suggestion value for N1N2
  setHgwVorschlagL();   //set suggestion value for L
}

//checks Ue_max for input errors
function chkHgwFormUe_max() {
  var Ue_min=3DparseFloat(document.Formular.Ue_min.value);
  var Ue=3DparseFloat(document.Formular.Ue.value);
  var sUe_max=3Ddocument.Formular.Ue_max.value;
  var Ue_max=3DparseFloat(sUe_max);
  if =
((isNaN(sUe_max)=3D=3Dtrue)||(Ue_max<=3D0)||(sUe_max=3D=3D"")||(sUe_max.c=
harAt(0)=3D=3D" ")) {
    Ue_max=3D400.0;
    document.Formular.Ue_max.value=3DUe_max;
  }
  if (Ue_max<Ue_min) {
    document.Formular.Ue_min.value=3DUe_max;
  }
  if (Ue_max<Ue) {
    document.Formular.Ue.value=3DUe_max;
  }
  setHgwVorschlagN1N2();//set suggestion value for N1N2
  setHgwVorschlagL();   //set suggestion value for L
}

//checks Ue for input errors
function chkHgwFormUe() {
  var Ue_min=3DparseFloat(document.Formular.Ue_min.value);
  var Ue_max=3DparseFloat(document.Formular.Ue_max.value);
  var sUe=3Ddocument.Formular.Ue.value;
  var Ue=3DparseFloat(sUe);
  if =
((isNaN(sUe)=3D=3Dtrue)||(Ue<=3D0)||(sUe=3D=3D"")||(sUe.charAt(0)=3D=3D" =
")) {
    Ue=3DUe_max;
    document.Formular.Ue.value=3DUe;
  }
  if (Ue>Ue_max) {
    document.Formular.Ue.value=3DUe_max;
  }
  if (Ue<Ue_min) {
    document.Formular.Ue.value=3DUe_min;
  }
  setHgwVorschlagN1N2();//set suggestion value for N1N2
  setHgwVorschlagL();   //set suggestion value for L
}

//checks Ua for input errors
function chkHgwFormUa() {
  var sUa=3Ddocument.Formular.Ua.value;
  var Ua=3DparseFloat(sUa);
  if =
((isNaN(sUa)=3D=3Dtrue)||(Ua<=3D0)||(sUa=3D=3D"")||(sUa.charAt(0)=3D=3D" =
")) {
    Ua=3D60.0;
    document.Formular.Ua.value=3DUa;
  }
  setHgwVorschlagN1N2();//set suggestion value for N1N2
  setHgwVorschlagL();   //set suggestion value for L
}

//checks Ia for input errors
function chkHgwFormIa() {
  var sIa=3Ddocument.Formular.Ia.value;
  var Ia=3DparseFloat(sIa);
  if =
((isNaN(sIa)=3D=3Dtrue)||(Ia<=3D0)||(sIa=3D=3D"")||(sIa.charAt(0)=3D=3D" =
")) {
    Ia=3D10.0;
    document.Formular.Ia.value=3DIa;
  }
  setHgwVorschlagN1N2();//set suggestion value for N1N2
  setHgwVorschlagL();   //set suggestion value for L
}

//checks f for input errors
function chkHgwFormf() {
  var sf=3Ddocument.Formular.f.value;
  var f=3DparseFloat(sf);
  if =
((isNaN(sf)=3D=3Dtrue)||(f<=3D0)||(sf=3D=3D"")||(sf.charAt(0)=3D=3D" ")) =
{
    f=3D50.0;
    document.Formular.f.value=3Df;
  }
  else if ((f<0.1)||(f>1000)) { //checks range of the frequency input
    alert("Die Schaltfrequenz muss zwischen\n100 Hz und 1 MHz liegen!");
    document.Formular.f.focus();
    document.Formular.f.select();
  }
  setHgwVorschlagN1N2();//set suggestion value for N1N2
  setHgwVorschlagL();   //set suggestion value for L
}

//calculates suggestion value for the coil
function setHgwVorschlagL() {
  var vmodus=3Ddocument.Formular.vmodus;
  if (vmodus.checked) {
    var Ue=3DparseFloat(document.Formular.Ue.value);
    if ((isNaN(Ue)=3D=3Dtrue)||(Ue<=3D0)) { return; }
    var Ue_max=3DparseFloat(document.Formular.Ue_max.value);
    if ((isNaN(Ue_max)=3D=3Dtrue)||(Ue_max<=3D0)) { return; }
    var Ua=3DparseFloat(document.Formular.Ua.value);
    if ((isNaN(Ua)=3D=3Dtrue)||(Ua<=3D0)) { return; }
    var Ia=3DparseFloat(document.Formular.Ia.value);
    if ((isNaN(Ia)=3D=3Dtrue)||(Ia<=3D0)) { return; }
    var f=3DparseFloat(document.Formular.f.value);
    if ((isNaN(f)=3D=3Dtrue)||(f<=3D0)) { return; }
    var N1N2=3DparseFloat(document.Formular.N1N2.value);
    if ((isNaN(N1N2)=3D=3Dtrue)||(N1N2<=3D0)) { return; }
    f*=3D2000;
    var dIL=3D0.4*Ia;
    document.Formular.dIL.value=3Drunde(dIL);
    var Uf=3D1.4;
    var nUe=3DUe_max/(2*N1N2)-Uf;
    var t1=3D(Ua+Uf)/(f*(nUe+Uf));
    var L=3Dt1*(nUe-Ua)/dIL
    document.Formular.L.value=3Drunde(L);
  }
  else {
    chkHgwFormL();
  }
}

//calculates suggestion value for the transformer
function setHgwVorschlagN1N2() {
  var vmodusN1N2=3Ddocument.Formular.vmodusN1N2;
  var Ue_min=3DparseFloat(document.Formular.Ue_min.value);
  if ((isNaN(Ue_min)=3D=3Dtrue)||(Ue_min<=3D0)) { return; }
  var Ua=3DparseFloat(document.Formular.Ua.value);
  if ((isNaN(Ua)=3D=3Dtrue)||(Ua<=3D0)) { return; }
  var Uf=3D1.4;
  if (vmodusN1N2.checked) {
    var N1N2=3DUe_min*0.95/(2*(Ua+Uf));
    document.Formular.N1N2.value=3Drunde(N1N2);
    setHgwVorschlagL();
  }
}

//The value of dIL depends on the coil's value
function chkHgwFormL() {  //L suggestion-mode deactivated
  var sL=3Ddocument.Formular.L.value;
  var L=3DparseFloat(sL);
  var Ue_max=3DparseFloat(document.Formular.Ue_max.value);
  var f=3DparseFloat(document.Formular.f.value)*2000;
  var Ua=3DparseFloat(document.Formular.Ua.value);
  var Ia=3DparseFloat(document.Formular.Ia.value);
  var N1N2=3DparseFloat(document.Formular.N1N2.value);
  var Uf=3D1.4;
  var nUe=3DUe_max/(2*N1N2)-Uf;
  var t1=3D(Ua+Uf)/(2*f*(nUe+Uf));
  if =
((isNaN(sL)=3D=3Dtrue)||(L<=3D0)||(sL=3D=3D"")||(sL.charAt(0)=3D=3D" ")) =
{
    document.Formular.L.value=3D"";
    document.Formular.dIL.value=3D"";
    return;
  }
  var dIL=3D2*(nUe-Ua)*t1/L;
  if (isNaN(dIL)=3D=3Dtrue) {
    document.Formular.L.value=3D"";
    document.Formular.dIL.value=3D"";
    return;
  }
  if (dIL<=3D2*Ia) {
    document.Formular.dIL.value=3Drunde(dIL);//continous mode
  }
  else {
    =
t1=3DMath.sqrt((Ia*L)/(f/2*(nUe-Ua)*(nUe+Uf)/(Ua+Uf)));//non-continuous =
mode
    dIL=3D(nUe-Ua)*t1/L;
    document.Formular.dIL.value=3Drunde(dIL);
  }
  document.Formular.L.value=3Drunde(L);
  return;
}

//The value of L depends on the value of dIL
function chkHgwFormdIL() {  //dIL suggestion-mode deactivated
  var sdIL=3Ddocument.Formular.dIL.value;
  var dIL=3DparseFloat(sdIL);
  if =
((isNaN(sdIL)=3D=3Dtrue)||(dIL<=3D0)||(sdIL=3D=3D"")||(sdIL.charAt(0)=3D=3D=
" ")) {
    document.Formular.dIL.value=3D"";
    document.Formular.L.value=3D"";
    return;
  }
  var Ue_max=3DparseFloat(document.Formular.Ue_max.value);
  var f=3DparseFloat(document.Formular.f.value)*2000;
  var Ua=3DparseFloat(document.Formular.Ua.value);
  var Ia=3DparseFloat(document.Formular.Ia.value);
  var N1N2=3DparseFloat(document.Formular.N1N2.value);
  if (isNaN(Ia)=3D=3Dtrue) {
    document.Formular.L.value=3D"";
    document.Formular.dIL.value=3D"";
    return;
  }
  if (dIL>2*Ia) {//non-continuous mode rejected
    document.Formular.L.value=3D"";
    alert("Bitte w=E4hlen Sie Delta IL < 2 Ia");
    document.Formular.dIL.select();
    return;
  }
  else {//continuous mode
    var Uf=3D1.4;
    var nUe=3DUe_max/(2*N1N2)-Uf;
    var t1=3D(Ua+Uf)/(f*(nUe+Uf));
    var L=3D(nUe-Ua)*t1/dIL;
    document.Formular.L.value=3Drunde(L);
  }
  document.Formular.dIL.value=3Drunde(dIL);
}

//calculates N1N2
function chkHgwFormN1N2() { //N1N2 suggestion-mode deactivated
  var sN1N2=3Ddocument.Formular.N1N2.value;
  var N1N2=3DparseFloat(sN1N2);
  var Ue_min=3DparseFloat(document.Formular.Ue_min.value);
  var Ua=3DparseFloat(document.Formular.Ua.value);
  var Uf=3D1.4;
  if =
((isNaN(sN1N2)=3D=3Dtrue)||(N1N2<=3D0)||(sN1N2=3D=3D"")||(sN1N2.charAt(0)=
=3D=3D" ")) {
    N1N2=3DUe_min/2/(Ua+Uf)*0.95;
    document.Formular.N1N2.value=3Drunde(N1N2);
  }
  if (N1N2>Ue_min/2/(Ua+Uf)*0.95) {
    document.Formular.N1N2.value=3Drunde(Ue_min/2/(Ua+Uf)*0.95);
  }
  setHgwVorschlagL();
  return;
}

//all input values are checked after pressing the "Berechnen" or =
"Wickel..." buttons
function HgwProcForm() {
  chkHgwFormUe_min();
  chkHgwFormUe_max();
  chkHgwFormUe();
  chkHgwFormUa();
  chkHgwFormIa();
  chkHgwFormf();
  var sL=3Ddocument.Formular.L.value;
  var L=3DparseFloat(sL);
  if =
((isNaN(sL)=3D=3Dtrue)||(L<=3D0)||(sL=3D=3D"")||(sL.charAt(0)=3D=3D" ")) =
{
    document.Formular.L.value=3D"";
    document.Formular.dIL.value=3D"";
    document.Formular.vmodus.checked=3Dtrue;
    setHgwVorschlagL();
  }
  chkHgwFormN1N2();
}

//values will be rounded to powers of ten, negative results are rejected
function runde(x) {
  if (x<0) { alert("Fehler: Negatives Rechenergebnis!"); return =
"Fehler!"; }
  else if (x=3D=3D0) { return 0}
  var ri=3D0;
  var strx=3D"";
  if (x<0.1) {
    do {
      x*=3D10;
      ri++;
    }
    while ((x<1)||((ri%3)!=3D0))
    x=3DMath.round(1E3*x)/1E3;
    strx=3Dx.toString().substring(0,5);
    strx+=3D"E-"+ri;
    return strx;
  }
  else { return Math.round(100*x)/100; }
}

//performs dynamically tooltip
function N1N2Hilfe() {
  Ue_min=3DparseFloat(document.Formular.Ue_min.value);
  Ua=3DparseFloat(document.Formular.Ua.value);
  htxt=3D"Wicklungsverh=E4ltnis:\nW=E4hlen Sie N1/N2 < =
Ue_min/2/(Ua+1.4V)*0.95 =3D " + runde(Ue_min/2/(Ua+1.4)*0.95);
  document.Formular.N1N2.title=3Dhtxt;
  window.status=3Dhtxt;
}

//opens coil data window
function HgwNewWindow() {
  HgwProcForm();
  var =
nw=3Dwindow.open("wickeldaten.html","Wickeldaten","width=3D800,height=3D6=
00,scrollbars=3Dyes,resizable=3Dno,"+
     "status=3Dno,menubar=3Dno,locationbar=3Dno,dependent=3Dyes");
  nw.focus();
}

//opens transformer data window
function HgwNewWindowTrafo() {
  HgwProcForm();
  var =
nw=3Dwindow.open("trafodaten.html","Trafodaten","width=3D665,height=3D600=
,scrollbars=3Dyes,resizable=3Dno,"+
     "status=3Dno,menubar=3Dno,locationbar=3Dno,dependent=3Dyes");
  nw.focus();
}

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hilfe1=new Image();hilfe1.src="hilfehi_e.html";
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type=3D"text/javascript"></SCRIPT>
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type=3D"text/javascript"></SCRIPT>
 </HEAD>=20
<BODY onmouseout=3D"window.status=3D' '; return" =
onload=3D"document.Formular.Ue_min.focus()"><NOSCRIPT>
&lt;DIV class=3Dmitte&gt;&lt; H2 class=3Drot&gt;You dont have JavaScript =

actvated.&lt;BR&gt;&lt;BR&gt;Please activate  JavaScript and reactivate =
the=20
webpage! &lt;/H2&gt;&lt; HR&gt;&lt; /DIV&gt;</NOSCRIPT>=20
<P><A href=3D_http_/henry.fbe.fh-darmstadt.de/smps_e/smps_e.html#Hgw" =
target=3D"_parent"><IMG=20
width=3D"42" height=3D"19" title=3D"Home" =
onmouseover=3D"bildwechsel(0,home1)"=20
onmouseout=3D"bildwechsel(0,home0)" alt=3D"" =
src=3D_file_/C_/Users/R%26D%201/Documents/Research/Power%20Supplies/H%3d.html
albbr=FCckengegentaktwandler_files/hgw_smps_in_e_files/home_e.png"=20
border=3D"0"></A> <A =
href=3D_http_/henry.fbe.fh-darmstadt.de/smps_e/hgw_hilfe_e.html
target=3D"_blank"><IMG width=3D"42" height=3D"19" title=3D"Help" =
onmouseover=3D"bildwechsel(1,hilfe1)"=20
onmouseout=3D"bildwechsel(1,hilfe0)" alt=3D"" =
src=3D_file_/C_/Users/R%26D%201/Documents/Research/Power%20Supplies/H%3d.html
albbr=FCckengegentaktwandler_files/hgw_smps_in_e_files/hilfe_e.png"=20
border=3D"0"></A> <A href=3D_javascript_window.html><IMG =
width=3D"49" height=3D"19"=20
title=3D"Print" onmouseover=3D"bildwechsel(2,drucken1)" =
onmouseout=3D"bildwechsel(2,drucken0)"=20
alt=3D"" =
src=3D_file_/C_/Users/R%26D%201/Documents/Research/Power%20Supplies/H%3d.html
albbr=FCckengegentaktwandler_files/hgw_smps_in_e_files/drucken_e.png"=20
border=3D"0"></A><BR><BR></P>
<DIV class=3D"mitte">
<H2>Half-Bridge Push-Pull Converter </H2><IMG width=3D"350" =
height=3D"131" title=3D"Circuit diagram of the Half-Bridge Push-Pull =
Converter"=20
onmouseover=3D"window.status=3D'Prinzipschaltbild des =
Halbbr=FCckengegentaktwandlers'"=20
alt=3D"" =
src=3D_file_/C_/Users/R%26D%201/Documents/Research/Power%20Supplies/H%3d.html
albbr=FCckengegentaktwandler_files/hgw_smps_in_e_files/hgwandl_e.png"><BR=
><BR>
<FORM name=3D"Formular" onsubmit=3D"HgwProcForm(); return true" =
action=3D"http://henry.fbe.fh-darmstadt.de/cgi-bin/smps_e.pl"=20
method=3D"get" target=3D"out">
<FIELDSET>
<TABLE width=3D"100%" bgcolor=3D"#ffffff" border=3D"0" cellspacing=3D"0" =
cellpadding=3D"0"=20
summary=3D"Hgw_Eingabe">
  <TBODY>
  <TR valign=3D"baseline"><!-- Row 1 Column 1 -->    =20
    <TD=20
      =
bgcolor=3D"#fffffc"><STRONG>&nbsp;&nbsp;V<SUB>in_min</SUB>&nbsp;/&nbsp;V<=
/STRONG>=20
          </TD><!-- Row 1 Column 2 -->    =20
    <TD =
bgcolor=3D"#fffffc"><STRONG>V<SUB>in_max</SUB>&nbsp;/&nbsp;V</STRONG>=20
</TD><!-- Row 1 Column 3 -->    =20
    <TD bgcolor=3D"#fffffc">&nbsp; </TD><!-- Row 1 Column 4 -->    =20
    <TD bgcolor=3D"#f5f5dc">
      <DIV class=3D"mitte"><STRONG>V<SUB>in</SUB>&nbsp;/&nbsp;V =
<SMALL>for the    =20
        calculations</SMALL></STRONG> </DIV></TD></TR>
  <TR valign=3D"top"><!-- Row 2 Column 1 -->    =20
    <TD height=3D"35" title=3D"Input voltage=3DVin_min...Vin_max"=20
      bgcolor=3D"#fffffc">&nbsp;&nbsp;<INPUT name=3D"Ue_min" =
onmouseover=3D"window.status=3D'Eingangsspannungsbereich=3DUe_min...Ue_ma=
x'" onblur=3D"chkHgwFormUe_min()" size=3D"10" maxlength=3D"11">=20
    </TD><!-- Row 2 Column 2 -->    =20
    <TD title=3D"Input voltage=3DVin_min...Vin_max" =
bgcolor=3D"#fffffc"><INPUT name=3D"Ue_max" =
onmouseover=3D"window.status=3D'Eingangsspannungsbereich=3DUe_min...Ue_ma=
x'" onblur=3D"chkHgwFormUe_max()" size=3D"10" maxlength=3D"11">=20
    </TD><!-- Row 2 Column 3 -->    =20
    <TD bgcolor=3D"#fffffc">&nbsp; </TD><!-- Row 2 Column 4 -->    =20
    <TD title=3D"The diagrams are calculated for this input voltage" =
bgcolor=3D"#f5f5dc">
      <DIV class=3D"mitte"><STRONG><INPUT name=3D"Ue" =
onmouseover=3D"window.status=3D'Die Diagramme werden f=FCr diese =
Eingangsspannung berechnet'" onblur=3D"chkHgwFormUe()" size=3D"10" =
maxlength=3D"11"></STRONG>=20
      </DIV></TD></TR>
  <TR valign=3D"baseline">
    <TD=20
      bgcolor=3D"#fffffc"><!-- Row 3 Column 1 =
-->&nbsp;&nbsp;<STRONG>V<SUB>out</SUB>&nbsp;/&nbsp;V</STRONG>=20
          </TD><!-- Row 3 Column 2 -->    =20
    <TD =
bgcolor=3D"#fffffc"><STRONG>I<SUB>out</SUB>&nbsp;/&nbsp;A</STRONG>=20
      &nbsp;     </TD><!-- Row 3 Column 3 -->    =20
    <TD bgcolor=3D"#fffffc"><STRONG>f&nbsp;/&nbsp;kHz</STRONG> &nbsp; =
</TD><!-- Row 3 Column 4 -->=20
       =20
    <TD bgcolor=3D"#f5f5dc">&nbsp; </TD></TR>
  <TR valign=3D"top"><!-- Row 4 Column 1 -->    =20
    <TD height=3D"35" title=3D"Output voltage in Volt"=20
bgcolor=3D"#fffffc">&nbsp;&nbsp;<INPUT name=3D"Ua" =
onmouseover=3D"window.status=3D'gew=FCnschte Ausgangsspannung in Volt'" =
onblur=3D"chkHgwFormUa()" size=3D"10" maxlength=3D"11">=20
    </TD><!-- Row 4 Column 2 -->    =20
    <TD title=3D"Output current in Amps"=20
bgcolor=3D"#fffffc"><INPUT name=3D"Ia" =
onmouseover=3D"window.status=3D'gew=FCnschter Ausgangsstrom in =
Amp=E8re'" onblur=3D"chkHgwFormIa()" size=3D"10" maxlength=3D"11">=20
    </TD><!-- Row 4 Column 3 -->    =20
    <TD title=3D"Switching frequency in kHz"=20
bgcolor=3D"#fffffc"><INPUT name=3D"f" =
onmouseover=3D"window.status=3D'Schaltfrequenz in kHz'" =
onblur=3D"chkHgwFormf()" size=3D"10" maxlength=3D"11">=20
    </TD><!-- Row 4 Column 4 -->    =20
    <TD title=3D"Calculate diagram" bgcolor=3D"#f5f5dc">
      <DIV class=3D"mitte"><INPUT =
onmouseover=3D"window.status=3D'Diagramme berechnen'" =
onclick=3D"window.status=3D'Diagramme werden geladen...'" =
type=3D"submit" value=3D"Calculate">=20
            </DIV></TD></TR>
  <TR valign=3D"baseline"><!-- Row 5 Column 1 -->    =20
    <TD bgcolor=3D"#ffffec">&nbsp; </TD><!-- Row 5 Column 2 -->    =20
    <TD bgcolor=3D"#ffffec"><STRONG>L&nbsp;/&nbsp;H</STRONG> </TD><!-- =
Row 5 Column 3 -->=20
       =20
    <TD =
bgcolor=3D"#fafaec"><STRONG>&#916;I<SUB>L</SUB>&nbsp;/&nbsp;A</STRONG>   =
   =20
      <SMALL>for V<SUB>in_max</SUB></SMALL> </TD><!-- Row 5 Column 4 --> =
   =20
    <TD bgcolor=3D"#f5f5dc">&nbsp; </TD></TR>
  <TR valign=3D"top"><!-- Row 6 Column 1 -->    =20
    <TD height=3D"35" title=3D"Proposal mode: L and &#916;IL are chosen =
automatically"=20
    bgcolor=3D"#ffffec">&nbsp; <INPUT name=3D"vmodus" =
onmouseover=3D"window.status=3D'Vorschlagsmodus: N1/N2 wird berechnet'"=20
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value=3D"vorschlag">=20
      <STRONG>Proposal</STRONG><BR></TD><!-- Row 6 Column 2 -->    =20
    <TD title=3D"Coil inductance in Henry"=20
bgcolor=3D"#ffffec"><INPUT name=3D"L" =
onmouseover=3D"window.status=3D'Induktivit=E4t der Spule in Henry'" =
onfocus=3D"vmodus.checked=3Dfalse" onchange=3D"chkHgwFormL()" =
size=3D"10" maxlength=3D"11">=20
    </TD><!-- Row 6 Column 3 -->    =20
    <TD title=3D"&#916;IL=3DCurrent ripple during maximum input voltage. =
Please select &#916;IL<2=B7Ia"=20
    bgcolor=3D"#ffffec"><INPUT name=3D"dIL" =
onmouseover=3D"window.status=3D'&#916;IL=3DWelligkeit des =
Drosselstromes, bei maximaler Eingangsspannung. W=E4hlen Sie =
&#916;IL<2=B7Ia'" onfocus=3D"vmodus.checked=3Dfalse" =
onchange=3D"chkHgwFormdIL();" size=3D"10" maxlength=3D"11">=20
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    <TD title=3D"Coil dimensions" bgcolor=3D"#f5f5dc">
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dimensionieren'" onclick=3D"HgwNewWindow()" type=3D"button" =
value=3D"Coil Data">=20
            </DIV></TD></TR>
  <TR valign=3D"top"><!-- Row 7 Column 1 -->    =20
    <TD height=3D"35" title=3D"Proposal mode: N1/N2 is chosen =
automatically"=20
    bgcolor=3D"#ffffec">&nbsp; <INPUT name=3D"vmodusN1N2" =
onmouseover=3D"window.status=3D'Vorschlagsmodus: N1/N2 wird berechnet'"=20
      onclick=3D"setHgwVorschlagN1N2()" type=3D"checkbox" checked=3D"" =
value=3D"vorschlag">=20
      <STRONG>Proposal</STRONG><BR></TD><!-- Row 7 Column 2 -->    =20
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      =
bgcolor=3D"#ffffec"><STRONG>N<SUB>1</SUB>&nbsp;/&nbsp;N<SUB>2</SUB>      =
=20
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bgcolor=3D"#ffffec"><INPUT name=3D"N1N2" onmouseover=3D"N1N2Hilfe()" =
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size=3D"10" maxlength=3D"11">=20
    </TD><!-- Row 7 Column 4 -->    =20
    <TD title=3D"Transformer dimensions" bgcolor=3D"#f5f5dc">
      <DIV class=3D"mitte"><INPUT onmouseover=3D"window.status=3D'Trafo =
dimensionieren'" onclick=3D"HgwNewWindowTrafo()" type=3D"button" =
value=3D"Transformer Data">=20
            </DIV></TD></TR></TBODY></TABLE></FIELDSET><INPUT =
name=3D"Wandlertyp" type=3D"hidden" value=3D"6">=20
</FORM></DIV><SMALL><A onmouseover=3D"window.status=3D'These Tips can =
help to improove your results';">The=20
 values of all input fields can be changed. <BR>The proposed value for=20
<EM>L</EM> is chosen so that =
<EM>&#916;I<SUB>L</SUB>=3D0,4=B7I<SUB>out</SUB></EM> for =20
<EM>&gt;V<SUB>in_max</SUB></EM>. <BR>The proposed value for =20
<EM>N</EM><SUB>1</SUB><EM>/N</EM><SUB>2</SUB> is chosen such that =20
<EM>V<SUB>out</SUB></EM> is just achieved when Vin=3D =
<EM>V<SUB>in_min</SUB></EM>.=20
 <BR>The cores are suggested in such a way that they do not warm up any =
more to=20
 than approx. 30 K in relation to the ambient. <BR>The wire cross =
sections are=20
 always suggested for a current density of 3A/mm<SUP>2</SUP>=20
<BR><STRONG>Tip:</STRONG> Its best not to modify =20
<EM>N</EM><SUB>1</SUB><EM>/N</EM><SUB>2</SUB> ;-)</A> =
<BR></SMALL><BR><BR>
<DIV class=3D"mitte"><SMALL><IMG width=3D"32" height=3D"20" alt=3D"" =
src=3D_file_/C_/Users/R%26D%201/Documents/Research/Power%20Supplies/H%3d.html
albbr=FCckengegentaktwandler_files/hgw_smps_in_e_files/copyright.png"=20
border=3D"0"> By <A =
href=3D_mailto_schmidt-walter%40fbe.fh-darmstadt.html>Dr. Heinz=20
Schmidt-Walter</A>,  <A href=3D_mailto_wenzel_holger%40web-2.html>Holger =
Wenzel</A>,=20
Thomas Z=E4nker, Richard  Morgan and Johnalan Kegan.</SMALL> =
</DIV></BODY></HTML>

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