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From: Tim Williams on 10 May 2010 18:53
"John Larkin" <jjlarkin(a)highNOTlandTHIStechnologyPART.com> wrote in message
news:ji2hu5djqeshqooebdf2je1scmb3g8dlcb(a)4ax.com...
>>> If they use a 10 bits ADC, then for a max of 2 kW the miniumum is
>>> already 2 W.
>>
>>2mW*
>
> 2 W

So they have an analog multiplier first?

Tim

--
Deep Friar: a very philosophical monk.
Website: http://webpages.charter.net/dawill/tmoranwms


From: Grant on 11 May 2010 02:19
On Mon, 10 May 2010 17:53:49 -0500, "Tim Williams" <tmoranwms(a)charter.net> wrote:

>"John Larkin" <jjlarkin(a)highNOTlandTHIStechnologyPART.com> wrote in message
>news:ji2hu5djqeshqooebdf2je1scmb3g8dlcb(a)4ax.com...
>>>> If they use a 10 bits ADC, then for a max of 2 kW the miniumum is
>>>> already 2 W.
>>>
>>>2mW*
>>
>> 2 W
>
>So they have an analog multiplier first?

Did you not hear the whoosh as it flew over their heads? :)

Grant.
--
http://bugs.id.au/
From: JosephKK on 11 May 2010 04:44
On Mon, 10 May 2010 17:53:49 -0500, "Tim Williams"
<tmoranwms(a)charter.net> wrote:

>"John Larkin" <jjlarkin(a)highNOTlandTHIStechnologyPART.com> wrote in message
>news:ji2hu5djqeshqooebdf2je1scmb3g8dlcb(a)4ax.com...
>>>> If they use a 10 bits ADC, then for a max of 2 kW the miniumum is
>>>> already 2 W.
>>>
>>>2mW*
>>
>> 2 W
>
>So they have an analog multiplier first?
>
>Tim

How much variation in line voltage do you see before it impacts
performance of lamps, motors, and most other loads; 10%?
From: Joe G (Home) on 11 May 2010 09:27

"Joe G (Home)" <joe.g(a)optusnet.com.au> wrote in message
news:4be68200$0$12142$afc38c87(a)news.optusnet.com.au...
> Hi All,
>
> What can the home power meter in the meter box read down to 1watt or
> less?

Sorry, I was talking about power meters that measure power for the
utilities companies.

I know TI AD and others have power meter reference designs.

Regs
Joe


From: Jan Panteltje on 11 May 2010 09:45
On a sunny day (Mon, 10 May 2010 17:04:25 -0500) it happened "Tim Williams"
<tmoranwms(a)charter.net> wrote in <hs9vt9$65e$1(a)news.eternal-september.org>:

>"Jan Panteltje" <pNaonStpealmtje(a)yahoo.com> wrote in message
>news:hs9mtm$6ci$1(a)news.albasani.net...
>> It is lonly logical.
>> If they use a 10 bits ADC, then for a max of 2 kW the miniumum is
>> already 2 W.
>
>2mW*

A 10 bit ADC has 1024 steps
2000 / 1024 is just about 2
???????????????

>Tim

Hello?

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