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DIY For Audio
Quasi hibrid BJT/Nmos output
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<blockquote data-quote="El Sid" data-source="post: 802665" data-attributes="member: 18550"><p>Thanks Jannas - interesting design.</p><p></p><p>A general question to the buffs out there, not at all meant as criticism of the topology but to learn.</p><p></p><p>It's difficult enough to design with "matched" pairs of complementary transistors (whether bjts, fets, mosfets, whatever the flavour), and looking at that circuit, quite a lot of effort and additional complexity seems to go into meeting the very different biasing/signal conditioning requirements etc for the two power transistors. it must be even more tricky to match a bjt with a mosfet!</p><p></p><p>There is reference to sweet sound and H2 harmonics, but the question still is why do this? It's surely easier to use one flavour or the other, and is this quasi-complementary topology as symmetrical as a "proper" complementary one?</p></blockquote><p></p>
[QUOTE="El Sid, post: 802665, member: 18550"] Thanks Jannas - interesting design. A general question to the buffs out there, not at all meant as criticism of the topology but to learn. It's difficult enough to design with "matched" pairs of complementary transistors (whether bjts, fets, mosfets, whatever the flavour), and looking at that circuit, quite a lot of effort and additional complexity seems to go into meeting the very different biasing/signal conditioning requirements etc for the two power transistors. it must be even more tricky to match a bjt with a mosfet! There is reference to sweet sound and H2 harmonics, but the question still is why do this? It's surely easier to use one flavour or the other, and is this quasi-complementary topology as symmetrical as a "proper" complementary one? [/QUOTE]
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DIY & Tutorials
DIY For Audio
Quasi hibrid BJT/Nmos output
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