Comments on: A Simple Circuit For Measuring Mains Power Consumption

By: John Walsh

John Walsh — Mon, 08 Jan 2024 15:24:07 +0000

Hello Paris,
I made your circuit and put it inside a mains socket with a back box.
I put a small choc block on the outside and a mains cable too.
One big difference though, I used the Neutral feed, rather than the Live feed, to make it much safer and stop any potential shocks.
It's been a really handy addition to my kit thanks.
Is there a way for me to send a couple of pictures of the amended circuit and of the completed box?

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By: John Walsh

John Walsh — Mon, 27 Nov 2023 15:03:36 +0000

Thank you so much for sharing this unbelievably simple little circuit.
It's exactly what I've been looking for.
I'm going to make it inside a single mains socket with plastic back box and put a simple choc block to tap the meter probes onto, all with a trailing mains plug.
So thanks once again for this.

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By: Ulises Aguilar Pazzani

Ulises Aguilar Pazzani — Fri, 30 Jun 2017 04:17:17 +0000

Mr Paris love reading Your article You are a wise man

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By: Paris Azis

Paris Azis — Wed, 05 Apr 2017 10:30:20 +0000

In reply to Ulises Aguilar Pazzani.

Ulises, thanks a lot.

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By: Ulises Aguilar Pazzani

Ulises Aguilar Pazzani — Sun, 26 Feb 2017 06:13:30 +0000

MR paris , great circuit

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By: Paris Azis

Paris Azis — Thu, 15 Dec 2016 09:07:17 +0000

In reply to Lawrence A. Mc Coig.

Hi Lawrence

I am happy to hear this. I only calculated the 120V version of this circuit without testing it. All my tests were done on the 230V version. But mathematics never fail, yes?

Best Regards

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By: Paris Azis

Paris Azis — Thu, 15 Dec 2016 09:01:34 +0000

In reply to Hafidh Mahmood.

Hello Hafidh

Thanks for your support. I fully agree with your comment.
As for my Fluke 8060A, this is my second Fluke. I bought it some months ago through eBay. It was a New Old Stock piece. I spent a lot of money for it, perhaps I could buy something much more flexible and modern, but I love this instrument since the early nineties when I used for first time in the company I was working at that time. I already had the industry standard Fluke 87 since 1989 and it works fine up to now. I only replaced the elastomeric connectors for its display which was fading...

Best Regards

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By: Lawrence A. Mc Coig

Lawrence A. Mc Coig — Wed, 14 Dec 2016 20:29:46 +0000

In reply to Lawrence A. Mc Coig.

My mistake. In America, we use period decimal points instead of commas that we use to group thousands. So, instead of 470 ohm resistors it was .47 ohm 5-Watt resistors. Things worked well then.

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By: Lawrence A. Mc Coig

Lawrence A. Mc Coig — Wed, 14 Dec 2016 16:42:22 +0000

I liked the article. I entered the circuit in Electronics Simulator and am getting 1 volt/ per Watt and not 1 mV/ Watt. Did I miss a measurement somewhere?

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By: Hafidh Mahmood

Hafidh Mahmood — Mon, 12 Dec 2016 18:50:50 +0000

Thanx for sharing Azis. I have always worked on the notion that the key to diagnosis,however,is knowledge of how the circuit is supposed to work rather than the availability of elaborate test equipment or a degree in electronics.Knowing exactly how a circuit is supposed to work is just a few steps from pin-pointing where your fault lies.If you do not have an idea of how circuit is supposed to work then how do you expect to safely work on it!
By the way, a very good Fluke 8060A you got there.I had one since 1986, gave me good service for more than 12 years until the display failed.

Cheers

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