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DIY & Tutorials
DIY For Audio
Transformer position and orientation
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<blockquote data-quote="gavinbirss" data-source="post: 44883" data-attributes="member: 60"><p>My DIY powersupply also introduced some hum. Hum was trough speakers so I blamed power supply rejection ratio of circuit? Never moved the tranny...</p><p>A little hum always affects the appreciation of a good amp... <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite4" alt=":mad:" title="Mad :mad:" loading="lazy" data-shortname=":mad:" /> </p><p></p><p>Gerhard try to swop polarity on Live and Neutral on the AC input? (choose one with lowest noise)</p><p>Is your heatsink/chassis earthed? Is power supply ground and zero potential? tied to chassis? If amp circuit allows it! </p><p>Try also perhaps if possible to regulate V+ and V- of amp...</p></blockquote><p></p>
[QUOTE="gavinbirss, post: 44883, member: 60"] My DIY powersupply also introduced some hum. Hum was trough speakers so I blamed power supply rejection ratio of circuit? Never moved the tranny... A little hum always affects the appreciation of a good amp... >:( Gerhard try to swop polarity on Live and Neutral on the AC input? (choose one with lowest noise) Is your heatsink/chassis earthed? Is power supply ground and zero potential? tied to chassis? If amp circuit allows it! Try also perhaps if possible to regulate V+ and V- of amp... [/QUOTE]
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DIY & Tutorials
DIY For Audio
Transformer position and orientation
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