Martin,
I knew Malcolm Coleman at Motorola. He was head of the power group in Area
D. We were neighbors and amateur photographers. We both had Canon EF
cameras.
Bob Swinney
"Martin H. Eastburn" wrote in message
...
The toaster oven and toaster are heavy users if you are in a Peak load or
Peak max limit....
billing (a ratcheting clamp of higher bills based on peak).
One sneaky one is the outside air conditioner in winter. The heater for
the oil is
still heating. It must be turned on for hours prior to first use - but
then I'd check
with a air con guy before chilling that as it may cause another issue.
I used to log power leg currents - using two clamp meters on each leg
being fed into
an ADC on my computer. An 8080. It was interesting to run it for a few
days and look
at the plots.
Martin
Martin
Martin Eastburn
@ home at Lions' Lair with our computer lionslair at consolidated dot net
NRA LOH & Endowment Member
NRA Second Amendment Task Force Charter Founder
IHMSA and NRA Metallic Silhouette maker & member
RoyJ wrote:
I just used my "Kill-A-Watt" power meter to take a look at several wall
warts. All the samll ones were slightly warm to the touch, at no load
used less than 1 watt (limit of resolution) on the power meter, and had a
power factor down in the .15 range. I tried a bigger one used for
charging my big cordless drill, it ran 4 watts and .47 power factor.
As a side note, I got a "Kill-A-Watt" power meter
http://www.p3international.com/produ.../P4400-CE.html
run about $30 to $35, used it to track down about 3/4 of my total
household power useage. The wall warts were NOT an issue, the freezer,
the refrigerator, and my wife's reading lamp were heavy hitters. The
reading lamp got a 40 watt florescent, saves about $6 a MONTH on that
item alone!!
I took a reading for several days on each item, loaded the KWH reading
and hour reading into a speadsheet, and calculated the monthly power
consumption and cost. Real eye opener!
Siggy wrote:
A while back there was a discussion about why wall wart transformers
that were not under load would draw no current. Anyone recall that
thread? As I recall there were some references to the induced currents
created by collapsing magnetic fields etc.
Anyway, I'm trying to either prove or disprove the statement that
unplugging wall warts when not actually using them to power or re-charge
your device will save electricity. My recollection is that it doesn't
matter. Right or wrong?
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