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DIY & Tutorials
DIY For Audio
A simple passive logarithmic VU-meter
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<blockquote data-quote="El Sid" data-source="post: 874585" data-attributes="member: 18550"><p>I have no experience of using diodes at low forward bias, so can't answer definitively. But with 2 diodes in the second leg, isn't there a wider range of non-linear (logarithmic) behaviour once that pair starts conducting than if D3 was connected to D2, as D2 would already be conducting fully once D3 starts conducting?</p><p></p><p>But it is a smart idea. I will play around when I build the circuit - at a whopping 21c apiece from Mantech I can afford to play around with 1N4148s...</p></blockquote><p></p>
[QUOTE="El Sid, post: 874585, member: 18550"] I have no experience of using diodes at low forward bias, so can't answer definitively. But with 2 diodes in the second leg, isn't there a wider range of non-linear (logarithmic) behaviour once that pair starts conducting than if D3 was connected to D2, as D2 would already be conducting fully once D3 starts conducting? But it is a smart idea. I will play around when I build the circuit - at a whopping 21c apiece from Mantech I can afford to play around with 1N4148s... [/QUOTE]
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DIY & Tutorials
DIY For Audio
A simple passive logarithmic VU-meter
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