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DIY For Audio
DIY Power Amplifier: PALADIN SM-150
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<blockquote data-quote="fdlsys" data-source="post: 715618" data-attributes="member: 2310"><p>Hey! What's that "servo" pronography there... and no BIAS trim-pots!?! :faint: :whip: :sulky:</p><p>Which FETs if I may ask?</p><p></p><p>Subscribed... and very interested! :dop:</p><p></p><p>Heatsinks - check!</p><p>Transformers - check! (assuming that VGS V+ and V- can be scaled down to 48V, assuming that VGS PSU is regulated, and to around 52V V+ and V- for unregulated output stage?)</p><p>PSU caps - hmm, more-less check (what's the designed PSU capacity?)</p><p></p><p>Could I perhaps suggest a separate VGS board from the output devices board, per channel? Those can then be mounted either horizontally or vertically, because they are not dependant on the position of FETs on the heatsink.</p><p>In practice, FETs do not even require PCBs. Resistors have to be as close as possible to FETs so one could solder them to FETs directly and then just draw solid coper rails connecting the FETs on the heatsink. But long slim PCBs a-la Valve Audio holding resistors and serving power to FETs would definitely look much nicer.</p><p></p><p> :rubhands:</p></blockquote><p></p>
[QUOTE="fdlsys, post: 715618, member: 2310"] Hey! What's that "servo" pronography there... and no BIAS trim-pots!?! :faint: :whip: :sulky: Which FETs if I may ask? Subscribed... and very interested! :dop: Heatsinks - check! Transformers - check! (assuming that VGS V+ and V- can be scaled down to 48V, assuming that VGS PSU is regulated, and to around 52V V+ and V- for unregulated output stage?) PSU caps - hmm, more-less check (what's the designed PSU capacity?) Could I perhaps suggest a separate VGS board from the output devices board, per channel? Those can then be mounted either horizontally or vertically, because they are not dependant on the position of FETs on the heatsink. In practice, FETs do not even require PCBs. Resistors have to be as close as possible to FETs so one could solder them to FETs directly and then just draw solid coper rails connecting the FETs on the heatsink. But long slim PCBs a-la Valve Audio holding resistors and serving power to FETs would definitely look much nicer. :rubhands: [/QUOTE]
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DIY & Tutorials
DIY For Audio
DIY Power Amplifier: PALADIN SM-150
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