consider this: you're PC power supply is likely 250W, total. the USB spec (I believe is 2A at 5V). the power ain't going to be there. I think that my REAL George Forman grill is well over 500W.
enough said.
I co-owned a company that built fast turn prototypes. we used vapor-phase. and no matter how much I read about the temperature ramp and did experiments, the only problem with a faster temperature rise was with old parts that had been exposed to moisture.
you guessed it: pop-corning. once we implemented a preheat process (10 minutes in a convection at 200F) and pre-baked multi-leaded parts of unknown storage and age, we never had a problem.
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are you from the Church of Scientology, or what?
consider this: you're PC power supply is likely 250W, total. the USB spec (I believe is 2A at 5V). the power ain't going to be there. I think that my REAL George Forman grill is well over 500W. enough said.
I co-owned a company that built fast turn prototypes. we used vapor-phase. and no matter how much I read about the temperature ramp and did experiments, the only problem with a faster temperature rise was with old parts that had been exposed to moisture. you guessed it: pop-corning. once we implemented a preheat process (10 minutes in a convection at 200F) and pre-baked multi-leaded parts of unknown storage and age, we never had a problem.
the flux. it's all in the flux.
so says an old embedded assembly language guy. this new fangled software takes up way too much memory.