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EEVblog #1334 – Mystery Dumpster Teardown

Mystery dumpster teardown time! With the most amazing mechanical mains power switch you’ll ever see! ...


  1. Why the 30V Battery?

  2. video is only 240p – did you upload a preview-version?

  3. The 30 volts battery(batteries?) are to power the ohms function on high Meg ranges. I have an Analog Meter that was badged for the Bell Companies (telephone) many years ago, probably late 70’s or early 80’s vinjtage. I am sure it is either a Simpson product or Triplett, most likely Triplett.

    It uses two 15 volt “Mercury” batteries. I’ve “heard” that those batteries are “obsolete”. I believe I looked them up once and they were available buy very expensive. Some other kind of battery could probably be kludged in. I simply use the meter without them, as I virtually never use a meter for high Meg ranges. All functions work perfectly, I just don’t use the high ohms. I have plenty of other meters if I need that function.

  4. I like these old meters , and remember there all some can afford.

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