OK then, please elaborate on why the following statement is not correct??

Always has been in the world of electronics I have been involved in!
RMS stands for Root Mean Square and will give an 'average' value, as opposed to a peak value. it will be the dc heating power for a sine wave. This works out to be 0.707 of the peak value for a sine wave.

I provided the link to Wikipedia here http://forums.thinkbroadband.com/fibre/t/4491201-sse...

The Wikipedia link is referring to RMS power in the context of audio amplifiers which relates to the physical output power of a sound system (the output a transducer can emit into the surrounding air)

RMS power in the context of electrical transmission and signalling is very much the correct term to be using. For example the power usage of a 100W light bulb is in terms of the RMS value not the instantaneous or peak power.

Annoyingly power output is often quoted by peak power (such as in car engine bhp figures) when a graph of power input/output across the range of operation would be a far better explanation of the system.

Edit: Root mean squared note the portion where it explains the difference between RMS for electrical uses and RMS for audio. Cheers

Edited by mrvanx (Mon 04-Jul-16 23:40:07)

In reply to a post by mrvanx:

The Wikipedia link is referring to RMS power in the context of audio amplifiers

Which is why it was on topic in the conversation.

Never suggested it wasn't on topic.

Just pointing out that using RMS within context is correct.

All done!

In reply to a post by mrvanx:

OK then, please elaborate on why the following statement is not correct??

Always has been in the world of electronics I have been involved in!
RMS stands for Root Mean Square and will give an 'average' value, as opposed to a peak value. it will be the dc heating power for a sine wave. This works out to be 0.707 of the peak value for a sine wave.

The short answer is that if this was written about voltage or current, it would in essence be correct but the mistake of simply swapping in power is hopelessly wrong. What is sometimes misleadingly referred to as �RMS power� is neither the RMS of the instantaneous power function nor is it 0.707 of the peak power value. In fact for an AC sine wave the power function isn�t even a sine wave itself and the actual RMS power (a practically useless number) is still not 0.707 of the peak power value. The average power (a practically useful number and equal to the power of the equivalent DC circuit and the same thing as what some people refer to as �RMS power�) is not really the RMS of anything and for an AC sine wave equals 0.5 of the peak power value.

I wonder if your issue is related to the issue some of us on Zen had been having for months - rubbish single threaded, great multi threaded.

The only common factors there are BT Wholesale / Openreach, since Zen won't be using Daisy

In reply to a post by mrvanx:

The Wikipedia link is referring to RMS power in the context of audio amplifiers which relates to the physical output power of a sound system (the output a transducer can emit into the surrounding air)

RMS power in the context of electrical transmission and signalling is very much the correct term to be using. For example the power usage of a 100W light bulb is in terms of the RMS value not the instantaneous or peak power.

Annoyingly power output is often quoted by peak power (such as in car engine bhp figures) when a graph of power input/output across the range of operation would be a far better explanation of the system.

Edit: Root mean squared note the portion where it explains the difference between RMS for electrical uses and RMS for audio. Cheers

No, lol, electrons don't care whether they are connected to a speaker, a light bulb or a dummy load. Whether it be an audio circuit or a light circuit, they are AC electrical circuits like any other and the same principles apply to "RMS power".

In reply to a post by sor:

I wonder if your issue is related to the issue some of us on Zen had been having for months - rubbish single threaded, great multi threaded.

The only common factors there are BT Wholesale / Openreach, since Zen won't be using Daisy

As a Newbie it took me a while to arrive at that conclusion. Sites doing their speed tests multithreading the test download or using short file segments are fooling us and I think ISPs know how to make those look good. TBB does give you the option of seeing the average and multithreaded download speeds. The fixed file size downloads are really useful and the TBB file server Ping is good. The average speeds on the graphs are close to what I get doing a 'Save As' for the 100Mb file - I note the download rate in kbps or Mbps and do the simple arithmetic or time the download with a stopwatch..

I don't think the factor is BTW/openreach alone because I had a year of Plusnet at their lower 32 speed and it wasn't like this. I think the ISP's negoitiate bandwidth prices with BTW, then use their own profile tools to restrict what customers actually get.

Please can you confirm you are also voxmagna1? This could get very confusing if you are not. Both in this thread and in future ones .