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Yep, I'm aware of those last two circuits. My question is are there any problems with my idea of using emitter-follower power transistors as I described? Crossover distortion?
A nice off-the-shelf BTL chipamp I'm aware of is the OnSemi LA4625. One day I might build an amp with one of these and...
A thought crossed my mind today regarding the latest circuit I uploaded - would this opamp driven transistor topology work for an audio amp? What I'm think is you could have two non-inverting op amps driving complementary BJT's with common emitters (just like the circuit) for one side of a...
Thanks godfreyl. The reason I've used two dividers is so I can get the base voltages just right (a difference of 1.4V between bases) so each one has 5V at it's emitter, minimizing imbalance and saving energy.
I tested my circuit today on breadboard. With a decent load on either rail the...
I didn't come here asking about single supply op amp design so please stop telling me to use a single supply design. I am working on a direct-coupled design so a virtual ground is required.
I posted here to get feedback on my rail splitter, as my post title suggests, I am aware of single...
Brian, it's not super important that the virtual ground sits exactly half way between 10V and 0V, just as long as it's stable. I thought this circuit would be better than a simple divider because only a fraction of the load is going through the resistor divider so the base voltages won't...
Hi guys,
First post here. I'm just getting into audio amps, plan to build myself a chip amp eventually.
I've been looking at different headphone amp designs using op amps and I've been particularly interested in supply splitting. The basic resistor divider + big caps method seems quite common...
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