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Recent content by CliffMichael

  1. CliffMichael

    EDA Tool SetsùPRO's & CON's Between OrCAD & Electronics Workbench

    I'm interested in practical differences and recommendations between professional OrCAD & Electronics Workbench EDA suites for electronics schematic capture, SPICE simulation, PCB layout, and PCB autorouting tool sets. Looking for cost, performance, ease of use, product support, and overall...
  2. CliffMichael

    Third party software

    You can register for free with Thomas Register (www.thomasregister.com), a major commercial/industrial manufacturer, product, and services search engine. They happen to have 3 free CAD CD-ROMs called PartSpec (for mechanical designers & engineers), PlantSpec (for plant & facilities...
  3. CliffMichael

    Critique this automatic part number generator, plz

    I think you've done a good job of producing a uniform method of intuitive part numbering. I wonder how your system will interface or compete with formats of off-the-shelf schematic-capture products.
  4. CliffMichael

    Best Practices for Statistical Sampling of Damaged Goods

    I have a finished goods inventory of 700 automobile speaker/amplifier systems that were damaged in an overturned common carrier shipping trailer. I think it reasonable that most of the units can be recovered for salvage purposes. I propose to implement appropriate functional testing of a small...
  5. CliffMichael

    OP AMP CMRR Measurement?

    Michael, You may not have gone down deep enough with your ACVM on the output. When you feed a signal, say 1kHz at 1 volt RMS, into the shorted pos & neg inputs, the output will be very low, say around millivolts or less. A finely tuned CMR could be tens microvolts. At this point you'll be...
  6. CliffMichael

    MTBF Degradation of CPU's After Sustained Overtemp

    I am seeking reliability White Papers or other relevant info on MTBF calculations or "seat-of-the-pants" assessment of long term degradation of microprocessors used in common PC servers after sustained ambient overtemperature conditions. Background: An operating server room's HVAC...
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