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EEVblog #1034 – Mailbag

Mailbag is back! Forum HERE SPOILERS: Beginner schematic and PCB layout analysis. Can Dave guess ...

  • Simon Ludborzs

    Why the 30V Battery?

  • Peter

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

  • Pingback: Kerry D. Wong » Blog Archive » MF 10A Analog Multimeter Teardown()

  • douglas lee

    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.

  • Paul

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

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