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millner(at)me.com
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 Posted: Mon Jan 23, 2012 8:22 pm Post subject: Grounding - 28 to 12v down-converter |
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>> Not sure of the issue. The input and output for this device share common ground .
Oh? Where is that specified? I was going by this note in the spec:
Note:
-Input/output negative cannot be mixed with or together
Maybe my "Chinglish" is not up to the task of translating that?
Paul
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mrspudandcompany(at)veriz
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| Posted: Tue Jan 24, 2012 6:12 am Post subject: Grounding - 28 to 12v down-converter |
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Note:
-Input/output negative cannot be mixed with or together
Maybe my "Chinglish" is not up to the task of translating
that?
Paul
I'm not schooled in "Chinglish" either but
perhaps this means that you cannot stack this power supply on top of another
to get a higher voltage out. In other words the ground is not floating.
Roger
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nuckolls.bob(at)aeroelect
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| Posted: Tue Jan 24, 2012 8:21 am Post subject: Grounding - 28 to 12v down-converter |
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At 08:07 AM 1/24/2012, you wrote:
| Quote: | Note:
-Input/output negative cannot be mixed with or together
Maybe my "Chinglish" is not up to the task of translating
that?
Paul
I'm not schooled in "Chinglish" either but
perhaps this means that you cannot stack this power supply on top of another
to get a higher voltage out. In other words the ground is not floating.
Roger |
Understand . . . I wonder if I could hire out to this
eBay seller as an editor for their marketing literature.
I read the line you cited and couldn't make any sense
of it. On the other hand, there's another line.
"-Module properties:non-isolated,auto switch
in Booster and step-down voltage,Constant
pressure and current."
It's that "non-isolated" thing that sticks. A strong
anecdotal point is the arrangement of terminals . . .
[img]cid:.0[/img]
The IN- and VO- are immediately adjacent which
offers a probability that they are common to each
other on the ECB.
My bet is that this is an example of the common
buck down converter but with some additional
electronics that offers BOTH regulation set
points for both current and voltage.
I'm thinking about ordering one just to
check it out. It appears to offer a lot of
performance for the money.
Bob . . .
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millner(at)me.com
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| Posted: Tue Jan 24, 2012 7:53 pm Post subject: Grounding - 28 to 12v down-converter |
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On 1/24/2012 6:07 AM, ROGER & JEAN CURTIS wrote:
| Quote: | Note:
-Input/output negative cannot be mixed with or together
Maybe my "Chinglish" is not up to the task of translating
that?
Paul
I'm not schooled in "Chinglish" either but
perhaps this means that you cannot stack this power supply on top of another
to get a higher voltage out. In other words the ground is not floating.
Roger
Hmmm... takes a lot of creativity to get there, since they're talking
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about input/output, not output/output... and they're talking about
negative, not positive/negative. We'll see what Bob's field trial
determines!
Paul
--
Please note my new email address!
millner(at)me.com
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