Re: [BAWUG] Dlink DWL-900AP+ - 12v into power port? or will it catch on fire.

[tim]

Haudy - Turns out that the 900AP+ and 900 both have the AIC power 
regulator. I'll try the power tomorrow.  Good point though.

Lars, which chip are you using for power regulation?

thanks
tim
On Dec 7, 2003, at 5:25 AM, Lars Holmstr�m wrote:

I've done this for both 900AP+ and WAP54G using a standard DC/DC for 
9-18V
input and 5V 1.5A out. Last I inject 12V DC in to the CAT-5 cable up to
70-80 meters away. SOme of them had been running for about a year now 
with
no problem.

/Lars

----- Original Message -----
From: "Haudy Kazemi" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Saturday, December 06, 2003 7:51 PM
Subject: Re: [BAWUG] Dlink DWL-900AP+ - 12v into power port? or will it
catch on fire.

Note that the Dlink DWL-900AP+ is different from the DWL-900 
(DWL-900AP).
They're different product versions and likely use different chips 
inside,
particularily because only the + version supports 22mbps.  Info:

http://www.dlink.com/products/?model=DWL-900AP%2b
http://www.dlink.com/products/?model=DWL-900AP
That said...

He mentions that the power regulator IC inside his Dlink DWL-900AP+ 
box
is:
"Power is regulated by AIC1563CN Supply voltage: 30V; versatile DC/DC
converter. Specs say it takes 3-30 volts in 1.5 amp out with no heat 
sink"

That suggests a 12v input would be okay, however it also looks like 
he's
doing POE over at least 110 feet of CAT5 (on pic shows him 110' in the
air).


At 01:34 AM 12/6/2003 -0500, tim wrote:
Hi,

I saw a website on putting 12v into the DWL-900 ( a 5v recommended
system ) here:
http://www.ralphfowler.com/links/dwl900.html
I can't tell if the 12v is going into the system through a lot of
ethernet, or if, with the power regulator he's talking about, that 
you
can actually put 12v into the power port of the system.

I have a field station I'm making all inside a pelican.  I'd be 
psyched
to be able to use my 12v battery to power the station. Right now, I'm
using 3 7805 5v regulators to give it power, and it creates both a 
lot
of heat, and a lot of loss.

Before I put 12v straight into the system, I'd like to know if 
someone
else is reading that page the way I am.  Any advice?

thanks!
tim
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