Mains voltage display?

[HighFidelityGuy]

Thanks for the replies.
I've ordered one of the ebay ones from a UK seller that was only a couple of pounds more expensive but should deliver quicker.

Thanks for the safety tip Mark. I'll be sure to fit a fuse.

Cheers.

[JimC]

This is a usefull site:-

http://www.dynamicdemand.co.uk/grid.htm#

I haven't 'listened' whilst monitoring the Frequency but such an exercise may be interesting.

James.

[Trickie_Dickie]

Obviously, it depends on what you intend doing with it but I found a plug-in 13amp socket with a built-in display at B&Q last year at £2 each.
Its a NIKKAI N67HH "Plug-In Power, Energy and CO2 Meter.
It measures Vac, A,W, Wmax,kWh,CO2/kg, total on-time,total electrical cost, Hz, kWh, clock. Bloody amazing.
Don't know if its still available, though.

Just found something VERY similar on Amazon, Energenie Power Meter for £10.18 and several others too.

[Reid Malenfant]

This is a usefull site:-

http://www.dynamicdemand.co.uk/grid.htm#

I haven't 'listened' whilst monitoring the Frequency but such an exercise may be interesting.

James.

Aha, there is something vitally important that they aren't telling you on that site Over the period of 24 hours the average frequency must add up to precisely 50Hz, the reason for this is to keep mains driven clocks at precisely the correct time over long periods. Some old clocks use syncronous motors & these spin at a precise speed when driven by 50Hz, so averaged out over a day they'll keep time pretty accurately but only as long as the mains frequency is averaged out at 50Hz over the 86,400 seconds of a day

[Trickie_Dickie]

This is a usefull site:-

http://www.dynamicdemand.co.uk/grid.htm#

I haven't 'listened' whilst monitoring the Frequency but such an exercise may be interesting.

James.

There's an idea for a circuit design. 50hz PLL detector , anyone ?