Hi Sherwin,
AFAICR, I believe this is a factor to convert the peak value of the AC voltage
(115 or 220V) into rms values. (1.414 came from square root of 2 through some
formula derivation)
The power formula is right -- used straightforward for DC computations. However
for AC, the effective / equivalent dc voltage (a.k.a. rms voltage/value) should
be obtained before using the formula.
Jerome
----- Original Message -----
From: "sherwin-plug" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Friday, September 14, 2001 5:58 PM
Subject: Re(2): [plug] pc's are power hungry?
> [EMAIL PROTECTED] writes:
> >These figures were determined by the following formula: Watts =
> >(amps)(volts) / 1.414, given that the average computer (for this test, a
> >Pentium-III 450 MHz) draws 0.3 amps at 115 volts.
>
> AFAIK the formula for power is
> P=VI or P=(I^2)/R where P is in
> watts, V in volts, I in amps and R in ohms.
>
> Where did 1.414 come from?
> Just a thought. :-)
>
> sherwin
>
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