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Audio and Video Talk
Vinyl
Build Your Own Tube Amplifier - workshop in 2011
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<blockquote data-quote="Mars" data-source="post: 95012" data-attributes="member: 817"><p>Hi All</p><p></p><p>It is getting close to the date for the Paarl Workshop. The Chinese New Year is in full swing in the land of tube amp parts, and we'll celebrate when the parts arrive.</p><p></p><p>Meanwhile the wheels are rolling in Paarl: the chassis is being made and the transformers are being rolled.</p><p></p><p>Here is the simulation of the power supply behaviour:</p><p></p><p><img src="http://www.23hq.com/Marsamps/photo/6471775/original" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p>Note the 68ohm resistor after the bridge - it is there to keep the peak of the switch on below 500V (the max rating of the filter caps)</p><p></p><p>Also note that the I(T1) is about 477mA RMS; I have designed the PT to be able to deliver 500mA</p><p></p><p>And here is the Power Transformer design (thanks to Yves for the software):</p><p></p><p><img src="http://www.23hq.com/Marsamps/photo/6471776/original" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p>The Sec 1 is only an electrostatic screen - it will be earthed.</p></blockquote><p></p>
[QUOTE="Mars, post: 95012, member: 817"] Hi All It is getting close to the date for the Paarl Workshop. The Chinese New Year is in full swing in the land of tube amp parts, and we'll celebrate when the parts arrive. Meanwhile the wheels are rolling in Paarl: the chassis is being made and the transformers are being rolled. Here is the simulation of the power supply behaviour: [IMG]http://www.23hq.com/Marsamps/photo/6471775/original[/IMG] Note the 68ohm resistor after the bridge - it is there to keep the peak of the switch on below 500V (the max rating of the filter caps) Also note that the I(T1) is about 477mA RMS; I have designed the PT to be able to deliver 500mA And here is the Power Transformer design (thanks to Yves for the software): [IMG]http://www.23hq.com/Marsamps/photo/6471776/original[/IMG] The Sec 1 is only an electrostatic screen - it will be earthed. [/QUOTE]
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Audio and Video Talk
Vinyl
Build Your Own Tube Amplifier - workshop in 2011
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