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  • Users: trennick
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  1. trennick

    ess of smt

    Being a mech eng primarily, I am diving into an area that I know only a little about, but I was wondering if someone could point me in the direction of some good references that would allow me to learn more about environmental stress screening of surface mount technology/devices. I am...
  2. trennick

    high compressor discharge

    I confess that I am not an expert in HVAC, more of a general ME, so I'd like your help. Can anyone give me a list of possible causes for higher than expected compressor discharge pressures on a refrigeration system? Causes that come to my mind are: 1. Refrigeration overcharge 2. Too much oil...
  3. trennick

    ME needs EE help

    Being an ME, I need some EE help. Can I reliably run one of those new tankless water heaters (essentially a big resistor), which draws 30A at 240Vac, from a 240Vac, 30A, 3 phase supply? Or will I be constantly tripping power? Thanks, Tim
  4. trennick

    repeat heat treat

    Hello, Is there a degrading effect (maybe beneficial?) from repeated cycles of heat treating? For example, I have a friend that is trying to achieve a specified hardness in 4130 steel and the first attempt didn't quite get to the level he wanted. Is there any problem with trying again? Also...

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