Changeset 296 in t29-www for en/devices/telefunken_t40w.php
- Timestamp:
- Sep 12, 2012, 6:43:17 PM (12 years ago)
- File:
-
- 1 edited
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en/devices/telefunken_t40w.php
r287 r296 1 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" 2 "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> 3 <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en"> 4 <head><!--#set var="title" value="Telefunken T 40W" 5 --><!--#set var="location" value="telefunkent40w" 6 --><!--#set var="part" value="extra" 7 --><!--#set var="url_de" value="geraete/telefunken_t40w.shtm" 8 --><!--#set var="title_de" value="Telefunken T 40W" 9 --><!--#set var="prev" value="/en/communication/broadcasting.shtm" 10 --><!--#set var="prev_title" value="Broadcasting" 11 --><!--#set var="next" value="" 12 --><!--#set var="next_title" value="" 13 --><title>technikum29 - <!--#echo var="title" --></title> 1 <?php 2 $seiten_id = 'telefunkent40w'; 3 $version = '$Id'; 4 $titel = 'Telefunken T 40W'; 5 6 require '../../lib/technikum29.php'; 7 ?> 14 8 15 <!--#include virtual="/en/inc/head.inc.shtm" --> 16 <meta name="t29.this.SVN" content="$Id$" /> 9 <h2><?php print $titel; ?></h2> 17 10 18 <!-- slider widget implementation --> 19 <script type="text/javascript" src="/shared/js/slider/slider.js"></script> 20 <link rel="stylesheet" type="text/css" href="/shared/js/slider/slider.css" /> 21 <script type="text/javascript"> 22 //<!-- setup 23 var slider = new Array(); 24 slider[1] = new Object(); 25 slider[1].min = 0; 26 slider[1].max = 100; 27 slider[1].val = 0; 28 slider[1].playerStepTimeout = 100; // ms 29 slider[1].playerStepDistance = 1.6; // in min/max/val-Einheiten! 30 slider[1].playerStopLabel = "start animation"; 31 slider[1].playerStartLabel = "stop animation"; 32 slider[1].playerRepeatLabel = "repeat animation" 33 slider[1].playerAutoReverse = false; 34 slider[1].playerAutoStart = true; 35 slider[1].playerRepeatFromMin = true; 36 slider[1].onchange = setTransparency; 11 <div class="box center"> 12 <div id="rel"> 13 <img id="offen" src="/shared/photos/kommunikationstechnik/telefunken_t40w/offen.jpg" 14 alt="Telefunken T40W: A photography of the inner life" /> 15 <img id="zu" src="/shared/photos/kommunikationstechnik/telefunken_t40w/geschlossen.jpg" 16 alt="Telefunken T40W: A photography of the closed device" /> 17 <img id="beschriftung" src="/shared/photos/kommunikationstechnik/telefunken_t40w/beschriftung.en.png" 18 alt="Telefunken T40W key: Labels of the amplifier stages, tubes, etc." /> 19 </div> 20 <div id="controls"> 21 <noscript>Please switch on <b>javascript</b> in your browser 22 to see the animation.</noscript> 23 <div class="cols"> 24 <div class="leftcol"> 25 <input type="button" value="Abspielen" id="slider-button1" /> 26 <div class="slider" id="slider01"> 27 <div class="left"></div><div class="right"></div> 28 <img src="/shared/js/slider/img/knob.png" width="31" height="15" /> 29 </div> 30 </div><!--left--> 31 <div class="rightcol"> 32 Use the slider to gain insight into the device or click 33 on "start animation". 34 </div><!--right--> 35 <div class="clear"></div> 36 </div><!--cols--> 37 </div><!--controls--> 38 </div> 37 39 38 function setTransparency(val, blubb) { 39 // see german page for full documentation 40 val = val / 100; // normierung auf [0,1] 41 // bereits ab 0.75 ist der Kasten nicht mehr zu sehen 42 setOpacity("zu", -val/0.75 + 1); 43 // ab 0.75 erscheint die Beschriftung, hoch 3 potenziert 44 setOpacity("beschriftung", Math.pow(val - 0.75, 3)*64 ); 45 } 40 <p>The Telefunken broadcasting device Type 40W (year of manufacture 1929) is build 41 aesthetically appealing. At that time, technology was comprehensible even for 42 (educated) laymen. On the other hand, the operation was not very comfortable: 43 The volume had to be adjusted by combining the antenna matching (the turn-switch 44 on the left) and the feedback (turn-switch on the right). When the feedback was 45 increased too much, the broadcasting reciever became an "jamming transmitter".</p> 46 46 47 function setOpacity(id, value) { 48 if(value >= 1) value = 1.0; 49 if(value <= 0) value = 0; 50 document.getElementById(id).style.opacity = value; 51 if(document.all) { 52 // IE 7 kann (immer!) noch kein opacity, daher ein 53 // haessliches workaround: 54 document.getElementById(id).style.setAttribute("filter", "alpha(opacity="+Math.round(100*value)+")", 0); 55 if(value == 1.0) 56 // der filter zerschiesst alpha-Transparenz -- noch ein workaround 57 document.getElementById(id).style.removeAttribute("filter", 0); 58 } 59 } 60 // --> 61 </script> 62 </head> 63 <body> 64 <!--#echo encoding="none" var="heading" --> 65 <div id="content"> 66 <h2><!--#echo var="title" --></h2> 47 <div class="box center"> 48 <img src="/shared/photos/kommunikationstechnik/telefunken_t40w/unterseite.jpg" 49 width="750" height="388" alt="Telefunken 40W underside" /> 50 </div> 67 51 68 <div class="box center"> 69 <div id="rel"> 70 <img id="offen" src="/shared/photos/kommunikationstechnik/telefunken_t40w/offen.jpg" 71 alt="Telefunken T40W: A photography of the inner life" /> 72 <img id="zu" src="/shared/photos/kommunikationstechnik/telefunken_t40w/geschlossen.jpg" 73 alt="Telefunken T40W: A photography of the closed device" /> 74 <img id="beschriftung" src="/shared/photos/kommunikationstechnik/telefunken_t40w/beschriftung.en.png" 75 alt="Telefunken T40W key: Labels of the amplifier stages, tubes, etc." /> 76 </div> 77 <div id="controls"> 78 <noscript>Please switch on <b>javascript</b> in your browser 79 to see the animation.</noscript> 80 <div class="cols"> 81 <div class="leftcol"> 82 <input type="button" value="Abspielen" id="slider-button1" /> 83 <div class="slider" id="slider01"> 84 <div class="left"></div><div class="right"></div> 85 <img src="/shared/js/slider/img/knob.png" width="31" height="15" /> 86 </div> 87 </div><!--left--> 88 <div class="rightcol"> 89 Use the slider to gain insight into the device or click 90 on "start animation". 91 </div><!--right--> 92 <div class="clear"></div> 93 </div><!--cols--> 94 </div><!--controls--> 95 </div> 52 <p>The device looks good from below, too. It's built on a pressed paper sheet 53 instead of a sheet chassis. Electrical connections are partially realized by 54 rivet strip conductors. Not until the 1950s, that method was implemented again, 55 leading to the printed circuit boards.</p> 96 56 97 <p>The Telefunken broadcasting device Type 40W (year of manufacture 1929) is build98 aesthetically appealing. At that time, technology was comprehensible even for99 (educated) laymen. On the other hand, the operation was not very comfortable:100 The volume had to be adjusted by combining the antenna matching (the turn-switch101 on the left) and the feedback (turn-switch on the right). When the feedback was102 increased too much, the broadcasting reciever became an "jamming transmitter".</p>103 104 <div class="box center">105 <img src="/shared/photos/kommunikationstechnik/telefunken_t40w/unterseite.jpg"106 width="750" height="388" alt="Telefunken 40W underside" />107 </div>108 109 <p>The device looks good from below, too. It's built on a pressed paper sheet110 instead of a sheet chassis. Electrical connections are partially realized by111 rivet strip conductors. Not until the 1950s, that method was implemented again,112 leading to the printed circuit boards.</p>113 114 </div><!-- content -->115 <!--#include virtual="/en/inc/menu.inc.shtm" -->116 </body>117 </html>
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