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#1
14th March 2006, 09:38 AM
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Plug & Play Mains Power & Safety Monitor
A friend of mine has kindly bought one of these for me from Maplins. I think they cost only about £12 and are very interesting indeed.
They measure mains voltage, current, wattage, frerquency and kWH. Very clever and now I can work out how much the telly consumes when it is on 'standby'. 
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#2
14th March 2006, 09:56 AM
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Re: Plug & Play Mains Power & Safety Monitor
I don't know why I spent £700 on mains testing equipment and why I bother having it callibrated every year!
Got yer !
__________________
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#3
14th March 2006, 10:11 AM
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Re: Plug & Play Mains Power & Safety Monitor
hook, line and sinker!!!
that has cheared me up, considerably clever bas-oops -t-rd gets his comeuppance! - soppy smile of child caught with his hand in the sweet jar -
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#4
14th March 2006, 10:26 AM
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Re: Plug & Play Mains Power & Safety Monitor
Actually I don't know why, oh yes that's right two jaggs doesn't want me to spend my money on valve amps.
OOPS there I go geting political again. That's right regulate the legitimate further and drive the cowboy further underground.
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#5
14th March 2006, 10:55 AM
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Re: Plug & Play Mains Power & Safety Monitor
Andrew,
how much juice does your telly consume on standby? I leave the PSU for my CDR and the CDR on all the time. Black Stuart
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#6
14th March 2006, 11:18 AM
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Re: Plug & Play Mains Power & Safety Monitor
Quote:
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#7
14th March 2006, 04:18 PM
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Re: Plug & Play Mains Power & Safety Monitor
JohnT,
do you have the code no. for this item, next time I'm back in the UK I might well buy one.Is it battery powered? Black Stuart
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#8
14th March 2006, 05:33 PM
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Re: Plug & Play Mains Power & Safety Monitor
Stuart, I will try my telly tonight.
My monitor (CRT 17 inch) at work on standby consumes 30ma. Now that isn't much is it. When on, it consumes half an amp. mains supply is 235 volts @ 49.9Hz - I wonder if the latter reading shows the level of accuracy of the meter or the maisn really is 49.9Hz. I expect the voltage will fluctuate.
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#9
18th March 2006, 07:30 AM
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Re: Plug & Play Mains Power & Safety Monitor
I read somewhere a few years ago that the frequency of the mains supply can vary quite a lot.
The electricity supplier only has to average 50hz output over a day (so that some alarm clocks will keep good time), it is free to allow it to drift either way in the short term as long as it makes the average. So maybe later it was 50.1 hz for a bit... Paul
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