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DIY & Tutorials
DIY For Audio
A 1000VA transformer is a scary thing!
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<blockquote data-quote="JimGore" data-source="post: 429548" data-attributes="member: 3"><p>Thanks Schalk for chiming in! Very interesting these things - to me it sometimes feels like a case of so much experimentation to do, so little time!</p><p></p><p>Now, onto a related topic - ripple:</p><p></p><p>One of the major cases to be made for large capacitor banks is to reduce and smooth the ripple caused by the bridge rectifiers. More capacitance and other things like Pi filters, etc reduce the ripple. I am guessing that a larger transformer which by default should have better regulation will also reduce the ripple.</p><p></p><p>The other side of the coin is that you may design the amplifier to have a particularly good PSRR, in which case the ripple does not cause as much concern as it would otherwise, in which case you could easily get away with much less capacitance because the circuit isn't as sensitive.</p><p></p><p>So then the question really becomes this - where do you spend your time, effort, and money? Do you go for clean rail supply, or do you go for great PSRR? Which one yields the better results in the final and most important listening tests?</p><p></p><p>Thanks,</p><p>Ian.</p></blockquote><p></p>
[QUOTE="JimGore, post: 429548, member: 3"] Thanks Schalk for chiming in! Very interesting these things - to me it sometimes feels like a case of so much experimentation to do, so little time! Now, onto a related topic - ripple: One of the major cases to be made for large capacitor banks is to reduce and smooth the ripple caused by the bridge rectifiers. More capacitance and other things like Pi filters, etc reduce the ripple. I am guessing that a larger transformer which by default should have better regulation will also reduce the ripple. The other side of the coin is that you may design the amplifier to have a particularly good PSRR, in which case the ripple does not cause as much concern as it would otherwise, in which case you could easily get away with much less capacitance because the circuit isn't as sensitive. So then the question really becomes this - where do you spend your time, effort, and money? Do you go for clean rail supply, or do you go for great PSRR? Which one yields the better results in the final and most important listening tests? Thanks, Ian. [/QUOTE]
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DIY & Tutorials
DIY For Audio
A 1000VA transformer is a scary thing!
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