Wall wart current draw

> Bob -
>
> I knew Malcolm Coleman at Motorola - well - I did custom designs for him
> at his request - and they were approved by the divisional Engineering in
> Ill.
> I flew all over the U.S. with members of Malcolm's Dallas team and the
> Sch. Ill. Team.
> Sadly, some friends were on a plane in the fateful day in Chicago -
> another missed that
> plane and lived. The system was a computerized Utility Load Controller -
> monitoring
> power substations .... and shedding loads (hot water, well pumps, air
> conditioners...).
>
> I lost track of him when the small company I was working for got smaller.
> I went to
> work for SLB and a long string of home moves.
>
> Fond memories of the local Motorola office and memories of our trips.
>
> 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
>
>
> Robert Swinney wrote:

>>>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/products/special/P4400/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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