Living in Europe, Africa, Near East and Asia I often saw even large items
like sewing machines which could be plugged into anything from 90-260 Volts.
I had TVs, vaccumns etc. in the house that we brught back here, and they all
worked well. But, with small wall-warts, they didnt seem to make them
available to do the same, and they are not useable in all areas of the
world. Following that suggestion, would be a great step to internatonal
use.
Danny Douglas N7DC
ex WN5QMX ET2US WA5UKR ET3USA
SV0WPP VS6DD N7DC/YV5 G5CTB all
DX 2-6 years each
.
QSL LOTW-buro- direct
As courtesy I upload to eQSL but if you
use that - also pls upload to LOTW
or hard card.
moderator [EMAIL PROTECTED]
moderator http://groups.yahoo.com/group/DXandTalk
----- Original Message -----
From: "Jose A. Amador" <[EMAIL PROTECTED]>
To: <[email protected]>
Sent: Thursday, February 01, 2007 12:27 PM
Subject: Re: [digitalradio] Computers that operate on 12 vdc
>
> There is a standard used in instrumentation stuff....sort of autovolt
> on DC. Those devices work on anything from 10 to 30 volts, so it covers
> at least
> 12.0, 13.8, 24 and 28 volts.
>
> Those devices are NOT inexpensive, and maybe a manufacturer would think
> a lot
> to add some regulator inside the two penny box he markets to allow using
> it with
> external power instead of one or two AA cells.
>
> I believe it is not a solution for everything, but some low consumption
> and not
> inexpensive piece of equipment could benefit from such "standard bus".
Say,
> some receivers, low output power radios, etc.
>
> Jose, CO2JA
>
> -----
>
> kd4e wrote:
>
> > I have an 'oft postponed low voltage bench supply project.
> >
> > I'd start with a 24VDC deep-cycle battery, float charged from
> > auto-controlled solar, pedal-power, and AC sources.
> >
> > The front panel would be a series of PowerPole connectors and each
> > connector would be matched to a switch that steps down from 24VDC to
> > the common voltages.
> >
> > One unresoloved detail was to use resistors, diodes, regulators, etc.
> > Minimal loss and minimal RFI are design imperatives.
> >
> > Also, unresolved are the maximum total and individual current
> > capacities.
> >
> > Possible voltages are 3. 4.5, 5, 6.3, 7.2, 8.4, 9, 12, 14.5, 16, 19,
> > 22, 24, etc.
> >
> > WDYT?
> >
> > --
> >
> > Thanks! & 73, doc, KD4E
> >
> > > Is there a reason we can't sart some sort of campaign to eliminate
> > > "wall warts". I have 8 of these things laying on my desk each
> > > producing a different voltage for a divice that could easily
> > > operate at 12 volts with the addition of a tiny internal circuit
> > > costing a few cents at most, and probably less than the hated
> > > wart.there is a useless and tangle of wires. since I already have a
> > > big 12volt supply and distribuiton panel. it'd be nice to eliminate
> > > this dangerous clutter. how does one approach some international
> > > standards organization to cure the plague of wall warts? 73 Harv,
> > > N9AI/AI9NL
>
>
>
>
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