Hacker News new | ask | show | jobs
by blattimwind 2520 days ago
Some critique

- psu drawing: no left-to-right flow, connector names are numbered, output connector (CONN2) is just floating around on the left and connected via net names. Same pretty generic net name ("out") is used as in the main amp.

- amplifier drawing: the main feedback loop is obscured because it's only connected via net names, connectors are again just stashed of somewhere to the side and only connected by name and not labelled. I would also point out that each op-amp of the quad-op-amp U1 shares the same designator, so you can't talk about U1a, U1b etc., which you actually do in the text.

The left half of the schematic is arranged pretty neatly and logically, but the discrete output stage is pretty cramped over there (clearly limited by the fixed sheet size), though standard arrangements of the building blocks make it quite clear what everything is (U1c U/I conversion, current mirror to the top rail, mirrored back to the bottom rail with an x3 CM, resistive load to the top, emitter follower output stage, CCS as load, off to the output).