/diy/ - Do It Yourself

>>1493875
why not empirically? since heat sinks are generally specified in °C/W, just apply watts and measure delta°C under actual airflow conditions
also, if there is no fan on it, simply adding a fan will massively lower the thermal resistance of any heat sink vs. still air
you could also increase efficiency in the design phase with a tracking buck pre-regulator, as another anon a few threads ago considered, so that you don't really have to worry about it

>>1493882
lmao just put an lm358 there man
>don't actually do this, use a proper rail-to-rail I/O op amp