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Old 5th Oct 2018, 6:20 pm   #43
G6Tanuki
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Join Date: Apr 2012
Location: Wiltshire, UK.
Posts: 13,998
Default Re: Quick-and-dirty testgear: mains voltage monitor.

Quote:
Originally Posted by dave walsh View Post
I didn't know those LED indicators existed Tanuki That's a very neat holder you've put together!
BTW is your Atavar related to Quatermass by any chance?
they are rather neat little displays: not spectacularly accurate [1% accuracy - meaning the last digit counts in twos not ones] and they have a significant degree of lag/hysteresis [the display only changes every couple of seconds - which I see as a benefit because it's easier to read than one where the last digit's continuously jittering] but for £2 I'm not complaining!

And yes, spot-on with the Quatermass reference!

Quote:
Originally Posted by ColinB View Post
You've got some over current protection in the circuit, as well as the 40A rated RCD....? Or at least, I hope you have!

Nice build though, could be interesting to see if the voltage changes as load is applied, but that close to the sub I bet it won't
Sorry, it's a 40A RCBO not just a RCD.

Watching the display when it's showing 248V, if I then turn every ring and the oven on on the cooker [which should draw about 13 Kilowatts - this is the biggest load I can create] I drop something between 4 and 6 Volts.

I like low supply-impedances.
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