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DIY For Audio
EASY PEASY Phono Stage - R500 phono stage.
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<blockquote data-quote="d0dja" data-source="post: 277547" data-attributes="member: 2244"><p>Was thinking to quickly pop this MM stage together on a plankie while I work out an enclosure solution... so getting some details sorted out.</p><p></p><p>Transformer -- needs a centre tap. Should have 30V between two "hot" sides, ~15V between each of the hot wires and the centre tap (two secondary wires connected to each other and to earth). That right?</p><p></p><p>Silver solder -- thinking to go a little zhuzh on this -- who stocks silver solder... Communica and RS don't. </p><p></p><p>Why so much volts going on? Since the output of this thing should be less than a volt, why does it need 40-odd volts rail to rail? By the looks of it, the LM317 regulates to 15V on each rail (assuming I read the app notes for it right).</p></blockquote><p></p>
[QUOTE="d0dja, post: 277547, member: 2244"] Was thinking to quickly pop this MM stage together on a plankie while I work out an enclosure solution... so getting some details sorted out. Transformer -- needs a centre tap. Should have 30V between two "hot" sides, ~15V between each of the hot wires and the centre tap (two secondary wires connected to each other and to earth). That right? Silver solder -- thinking to go a little zhuzh on this -- who stocks silver solder... Communica and RS don't. Why so much volts going on? Since the output of this thing should be less than a volt, why does it need 40-odd volts rail to rail? By the looks of it, the LM317 regulates to 15V on each rail (assuming I read the app notes for it right). [/QUOTE]
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DIY & Tutorials
DIY For Audio
EASY PEASY Phono Stage - R500 phono stage.
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