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DIY & Tutorials
DIY For Audio
Guitar amp from Philips radio
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<blockquote data-quote="El Sid" data-source="post: 954097" data-attributes="member: 18550"><p>What a difference a cathode bypass cap makes....</p><p></p><p>Before - 100mV in, about 37V out (10x probe)</p><p></p><p><img src="https://i.imgur.com/VdgMw70.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p>After - 100mV in, about 60V out!</p><p></p><p><img src="https://i.imgur.com/YOVVNP8.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p>So a 50% increase in gain. Interestingly, the first champ circuit I posted above doesnt have the bypass, while the later one does...</p><p></p><p>Anyway, since the first stage is going to be loaded up with a tone stack, plenty gain is fine</p></blockquote><p></p>
[QUOTE="El Sid, post: 954097, member: 18550"] What a difference a cathode bypass cap makes.... Before - 100mV in, about 37V out (10x probe) [IMG]https://i.imgur.com/VdgMw70.jpg[/IMG] After - 100mV in, about 60V out! [IMG]https://i.imgur.com/YOVVNP8.jpg[/IMG] So a 50% increase in gain. Interestingly, the first champ circuit I posted above doesnt have the bypass, while the later one does... Anyway, since the first stage is going to be loaded up with a tone stack, plenty gain is fine [/QUOTE]
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DIY & Tutorials
DIY For Audio
Guitar amp from Philips radio
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