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And presented in Dave's unique non-scripted overly enthusiastic style!
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EEVblog #210 – Krohn-Hite DC Voltage Standard Teardown & Calibration
Posted on October 24th, 2011 9 comments
A Krohn-Hite MV106J DC Voltage Standard calibrator landed on Dave’s bench. What’s inside? How does it work? Is it still within spec?, and what’s all this (lack of) Kelvin-Varley and LM299 zener reference stuff anyhow?
And no adventure in calibration check is complete without a visit to the TrioSmartCal lab.
EEVblog #210 - Krohn-Hite DC Voltage Standard Teardown & Calibration [ 170.35 MB ] Download (236)9 responses to “EEVblog #210 – Krohn-Hite DC Voltage Standard Teardown & Calibration”
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I like the lack of strain relief on the mains lead… (Just a Knot on a hole in a metal panel !) – Very Very Old School… 8-|
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frankly frank October 27th, 2011 at 13:49
Sorry to disappoint but there’s a strain relief grommet on the back panel.
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Love the videos, TY.
Always educational and knowledgeable, and sometimes give me a laugh too … win !!!
Keep it up !!!
CS
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http://www.ebay.com.au/itm/ws/eBayISAPI.dll?ViewItem&item=120789466186
20 bucks plus shipping, good deal
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Thank you for taking time to show the advantage of the Kelvin-Varley voltage divider cct. over the Kelvin voltage divider cct. I very much enjoyed that.
Congratulations on getting yourself such a good deal!
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I think i does not hold the spec, in which the temperature coeffs are only the ones from the diode. what about the temp drifts of the current source, the resistors…
Test it in temperature against your HP @room temp !
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CRM114 October 25th, 2011 at 13:19
New Balance, FootJoy, and Sam Adams are all made in the Boston area
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Thanks David,
I like your review so much I even purchased one just like it on ebay today. Hope my works as well as yours
Oh yea, I also purchased the Rigol DS1052E O-scope after I saw that review…
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Wonko The Sane October 24th, 2011 at 10:36