On Fri, 4 Dec 2015 15:29:20 -0500 WILTON via Mercedes
wrote:
> Heat. The magnetic field rising and falling across the transformer
> coils creates heat.
Yes, that is true. It's called hysteresis loss.
> Mag field is there in regular outlet, too, but it's not as strong and
> as concentrated a
Power _conversion_ is never 100% efficient. In most of
these types of power supplies, the converted power is always
available, whether you're using it or not. That's why I
like things with true power switches.
There is essentially no magnetic field around an unused
household outlet, because the
--
From: "Curt Raymond via Mercedes"
To: "Mercedes Discussion List"
Cc: "Curt Raymond"
Sent: Friday, December 04, 2015 1:44 PM
Subject: Re: [MBZ] Nice USB Accessory
Because a USB port is 3v, something is lost in the conversion.
-Curt
From: Andrew Strasfogel v
: [MBZ] Nice USB Accessory
Why isn't that true for ANY 110V AC outlet?
On Fri, Dec 4, 2015 at 1:20 PM, Craig via Mercedes
wrote:
On Thu, 03 Dec 2015 20:53:56 -0500 Dan Penoff via Mercedes
wrote:
No different than if you left your charger plugged into the wall all of
the time.
Yes.
essage - From: "Dan Penoff via Mercedes"
>
> To: "Mitch Haley" ; "Mercedes Discussion List"
>
> Cc: "Dan Penoff"
> Sent: Friday, December 04, 2015 6:39 AM
> Subject: Re: [MBZ] Nice USB Accessory
>
>
>> Phantom, zombie, vampire
riday, December 04, 2015 6:39 AM
Subject: Re: [MBZ] Nice USB Accessory
Phantom, zombie, vampires, one of those things...
These have switching power supplies. I checked one when I installed it.
Negligible, if that.
Dan
On Dec 4, 2015, at 3:25 AM, Mitch Haley via Mercedes
wrote:
On D
, December 04, 2015 3:25 AM
Subject: Re: [MBZ] Nice USB Accessory
On December 3, 2015 at 8:53 PM Dan Penoff via Mercedes
wrote:
Why? If there is nothing plugged into them, there’s no load. No
different
than if you left your charger plugged into the wall all of the time. If
it’s
not
Because a USB port is 3v, something is lost in the conversion.
-Curt
From: Andrew Strasfogel via Mercedes
To: Mercedes Discussion List
Cc: Andrew Strasfogel
Sent: Friday, December 4, 2015 1:26 PM
Subject: Re: [MBZ] Nice USB Accessory
Why isn't that true for ANY 110V AC o
Why isn't that true for ANY 110V AC outlet?
On Fri, Dec 4, 2015 at 1:20 PM, Craig via Mercedes
wrote:
> On Thu, 03 Dec 2015 20:53:56 -0500 Dan Penoff via Mercedes
> wrote:
>
> > No different than if you left your charger plugged into the wall all of
> > the time.
>
> Yes.
>
>
> > If it’s not ch
On Thu, 03 Dec 2015 20:53:56 -0500 Dan Penoff via Mercedes
wrote:
> No different than if you left your charger plugged into the wall all of
> the time.
Yes.
> If it’s not charging, there’s no load.
No, there is a load on the AC keeping it ready for use.
Craig
n Penoff
Sent: Thursday, December 3, 2015 8:36 PM
Subject: [MBZ] Nice USB Accessory
I have a few of these installed around the house, one behind my bedside table,
another in the kitchen on the side countertop. They’re quite convenient, and
save people from having to run around and find
And transformers draw about half of full load power all the time,
They are nowhere near that bad! Now, perhaps cheap small transformer
based wall warts are that bad, but _transformers_, under no load, do
not lose 50%! Core saturation is loss, if the core is big enough
(and most are) and built
idn't want to get to camp in the spring to find
only charcoal.
-Curt
From: Mitch Haley via Mercedes
To: Mercedes Discussion List
Cc: Mitch Haley
Sent: Friday, December 4, 2015 3:25 AM
Subject: Re: [MBZ] Nice USB Accessory
> On December 3, 2015 at 8:53 PM Dan Penoff
Phantom, zombie, vampires, one of those things...
These have switching power supplies. I checked one when I installed it.
Negligible, if that.
Dan
> On Dec 4, 2015, at 3:25 AM, Mitch Haley via Mercedes
> wrote:
>
>
>
>> On December 3, 2015 at 8:53 PM Dan Penoff via Mercedes
>>
>> wrote:
> On December 3, 2015 at 8:53 PM Dan Penoff via Mercedes
> wrote:
>
>
> Why? If there is nothing plugged into them, there’s no load. No different
> than if you left your charger plugged into the wall all of the time. If it’s
> not charging, there’s no load.
>
> And please don’t anyone star
$9 is a great price. I put a bunch in my addition, they were like $25 at Lowes.
The usb puts out 2A in mine. I have some set up as power points for
arduino-controlled under cabinet lights (rgb LED modules) that I need to get
set up. Should be plenty of juice to run a string of them and the contr
Why? If there is nothing plugged into them, there’s no load. No different
than if you left your charger plugged into the wall all of the time. If it’s
not charging, there’s no load.
And please don’t anyone start about “vampire loads”.
Dan
> On Dec 3, 2015, at 8:48 PM, Max Dillon via Mercede
Clever, but aren't those going to be a constant (albeit small) electrical load
when not in use?
--
Max Dillon
Charleston SC
'87 300TD
'95 E300
On December 3, 2015 8:36:34 PM EST, Dan Penoff via Mercedes
wrote:
>I have a few of these installed around the house, one behind my bedside
>table, ano
I have a few of these installed around the house, one behind my bedside table,
another in the kitchen on the side countertop. They’re quite convenient, and
save people from having to run around and find chargers.
http://eshop.macsales.com/Search/SearchPromo.cfm?Ntk=Primary&N2=100361&Ns=P_Popula
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