That would be too easy. Better to annihilate trillions of electrons
debating the issue.
bp
<part15sbs{at}gmail{dot}com>
On 12/12/2024 10:20 AM, Mathew Howard wrote:
It should be simple enough to just swap it for a bigger power supply
and see if the problem goes away...
On Thu, Dec 12, 2024 at 4:53 AM Adam Moffett <dmmoff...@gmail.com> wrote:
I ain't got no variac, son
Field guys tried replacing two of the affected routers yesterday
evening and the replacements did the same thing. The original
units work fine at our office. So I'm pretty convinced it's a
local power issue, and I'm pretty convinced it only affects only
the Nokia router because Nokia is the only one who undersized
their power supply.
-Adam
------------------------------------------------------------------------
*From:* AF <af-boun...@af.afmug.com> on behalf of Chris Fabien
<ch...@lakenetmi.com>
*Sent:* Wednesday, December 11, 2024 5:39 PM
*To:* AnimalFarm Microwave Users Group <af@af.afmug.com>
*Subject:* Re: [AFMUG] Sizing DC Power Supplies
Would be easy enough to bench test this with a variac.
The specs on the power supply are a bit suspect too. Max of 1A at
Min 100V = 100 watts to put out 24W of power?
On Wed, Dec 11, 2024 at 5:30 PM <ch...@go-mtc.com> wrote:
Looks like you nailed it to me.
*From:* Adam Moffett
*Sent:* Wednesday, December 11, 2024 3:09 PM
*To:* AnimalFarm Microwave Users Group
*Subject:* [AFMUG] Sizing DC Power Supplies
So riddle me this:
Let's say you have this 12V device which needs a maximum of
24.3 Watts.
What amperage of 12V switching power supply would you spec for
this device? Personally, I'd go for around 2.5 - 3.0 Amps so I
have a safety margin.
Nokia supplies a 12V 2.0 Amp.
So 24VA to supply up to 24.3W. If those numbers are real,
then isn't that undersized to start with?
I would never have looked except that we have 3 of these on
the same street all rebooting every few minutes, and they all
started doing it at the same time this morning. It so happens
they're all getting electric service off the same transformer,
so I'm imagining there's low voltage or some other condition
making the DC power supply a little less efficient and now it
ain't got the juice to keep the device running. In which case
someone at Nokia is an idiot. Please tell me if I'm the crazy
one here.
-Adam
------------------------------------------------------------------------
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