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  1. rumbaldking

    MOV Question

    Eagle made (?makes?) a duplex outlet for installation in homes, I guess, with little replacable MOV plugin elements. It beeped when the MOV had been "Consumed" by arresting enough surges until you removed the thing, but I don't know if it beeped until you put a new one in.
  2. rumbaldking

    Halogen bulb watts/lumen efficiency paradox?

    http://www.centennialbulb.org/ to link to a filament-based curiosity - "world's oldest continuously running bulb", 101 years, carbon filament, over 800,000 hours. In a firehouse in Livermore, CA 1 hr est of San Francisco. They moved it a short while back and this website got put up...
  3. rumbaldking

    DC circuit colour codes

    The color codes for AC wiring that connects to Line power conflict with color codes used internally in modern equipment. Additionally the Black/White of USA color codes is Brown/Blue in the rest of the world. The original IBM PC-XT had a 12 pin Molex connector using the following color code...
  4. rumbaldking

    How do you maintain EMC with cabinetÆs open?

    I have puzzled out safety standards on sort of the same lines and finally figured out that they make a big differentiation between operator area and service area. If you can seal the cabinet, the interior is considered the service area. Perhaps there is a similar difference between operating...
  5. rumbaldking

    analogue phase shifter ref's?

    looking today, links do not work
  6. rumbaldking

    HP 8510A to C upgrade questions

    If I am upgrading the 85101A and 85102A to the 85101C and 85102B, will that still work with an 8340A sweeper? The HP upgrade guide indicates degraded performance if sweeper is not upgraded with $33K replacement but I never test above 6 GHz. Does this relate to speed of measurement, noise...
  7. rumbaldking

    Phase Matching Test for RF Coax Cables

    HP 8753C can do your measurement if option 010 is installed. If not, you cannot measure time domain, required for phase mesurement. Without phase measurement you cannot compare phase. You should know what frequency you want to make this comparison at, too. HP part number 85019B was a kit that...

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