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Cheap, not Chinese, Voltage reference for DIY meter calibration

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KungFuJosh:

--- Quote from: dazz1 on September 09, 2024, 12:54:43 am ---Has anyone built one of these?

--- End quote ---

Martin72 has: https://www.eevblog.com/forum/testgear/elektor-voltage-current-calibrator-project/



I modified the PCB design a bit, and was planning on building one, but the cost is high. The LCD and some of the chips are expensive. If not for cost, and then wanting to have it calibrated (and significantly increase the investment), I would have made one too.

dazz1:
I found the YT video
where the author/designer indicates a build price of around €300.  Ouch, ouch, ouch.

For that price I can buy a used precision bench multi-meter plus a Chinese process calibrator.  That combination would be far more useful and versatile.

KungFuJosh:

--- Quote from: dazz1 on September 09, 2024, 01:33:13 am ---the author/designer indicates a build price of around €300.  Ouch, ouch, ouch.

--- End quote ---

Yeah, that's old. That's before covid made the world more expensive. It's more like 500 now. 300 will literally get 2 of the chips and the LCD now.

dazz1:

--- Quote from: KungFuJosh on September 09, 2024, 01:45:35 am ---
--- Quote from: dazz1 on September 09, 2024, 01:33:13 am ---the author/designer indicates a build price of around €300.  Ouch, ouch, ouch.

--- End quote ---

Yeah, that's old. That's before covid made the world more expensive. It's more like 500 now. 300 will literally get 2 of the chips and the LCD now.

--- End quote ---

At that price the Elector unit is a non-starter for me.  It would be nice to build the Elector unit, but value for money is not there for my use-case.

KungFuJosh:

--- Quote from: dazz1 on September 09, 2024, 02:02:36 am ---At that price the Elector unit is a non-starter for me.  It would be nice to build the Elector unit, but value for money is not there for my use-case.

--- End quote ---

Same for me. Even the VREF10-001 r9 I bought is well beyond my needs...and more than I should have spent, but you know. TEAS.

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