Electronics > Projects, Designs, and Technical Stuff
Power Amplifier AB class
dzseki:
--- Quote from: mariush on June 20, 2019, 06:50:04 pm ---imho any design that's mostly through hole and then gives up and uses surface mount on the bottom gets disqualified.
In the example above, designer could have used a couple tiny circuit boards to place the surface mounted stuff om them and then use a couple headers to plug them into the main board (like SIP packages, RAM sticks ) ... or just use through hole parts ... so the whole design could have been single sided ... there's plenty of room on the board to do something like that.
Not to mention the lack of heatsink mounting options (Screw holes, silkscreen etc), and the weird placement of those 4 resistors at the top right by the holes
--- End quote ---
IMHO bending TH resistor legs is PITA, soldering SMD foil caps also PITA.
Also, I don't know do you complain about the heatsink, the designer clearly did not intend to install the output transistors on the PCB, but on a separate heatsink with flywires.
strawberry:
final PCB layout
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