asterisk users - May 2005 - ISPCON Mini-emergency: ATA186 Power Cube OK on SPA841?

Guess who's here to do an Asterisk demo this week without the power 
supply for his SPA-841.

I have an ATA186 with me.  Both phones use a 5v supply.  Does anyone 
know whether the supplies are interchangeable?

Thanks in advance; sorry for the noise.

B.

Hi,

I have used the Cisco ata186 powersupply in the SPA1000 and it worked fine
(ditto for the reverse)

Regards,
T 
> -----Original Message-----
> From: asterisk-users-bounces@lists.digium.com 
> [mailto:asterisk-users-bounces@lists.digium.com] On Behalf Of 
> Brian Capouch
> Sent: Tuesday, 24 May 2005 9:28 AM
> To: Asterisk Users Mailing List - Non-Commercial Discussion
> Subject: [Asterisk-Users] ISPCON Mini-emergency: ATA186 Power 
> Cube OK onSPA841?
> 
> Guess who's here to do an Asterisk demo this week without the 
> power supply for his SPA-841.
> 
> I have an ATA186 with me.  Both phones use a 5v supply.  Does 
> anyone know whether the supplies are interchangeable?
> 
> Thanks in advance; sorry for the noise.
> 
> B.
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On Tue, 2005-05-24 at 09:41 +1000, Terry H. Gilsenan
wrote:
> Hi,
> 
> I have used the Cisco ata186 powersupply in the SPA1000 and it worked fine
> (ditto for the reverse)
> 
> Regards,
> T 
The biggest thing to watch is that the amperage is at least as high.
The device wont draw more than it needs (not true of voltage but is true
of amperage) but if you try to draw more than the transformer outputs it
will get really hot and eventually the transformer will die. 

Polarity is aparently the same (most use center positive to prevent
accidental shorting), but should be marked    
  - ----C ---- + 
something like that so you can tell if its the same.  

In a conference hall odds are power is unclean (especially with long
extension cords where you get more hramonic distortion and such) and RMS
is lower than stated, but it shouldnt be too big of a problem for that..


-- 
Trixter http://www.0xdecafbad.com
UK +44 870 340 4605   Germany +49 801 777 555 3402
US +1 360 207 0479 or +1 516 687 5200
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> -----Original Message-----
> From: asterisk-users-bounces@lists.digium.com 
> [mailto:asterisk-users-bounces@lists.digium.com] On Behalf Of 
> trixter http://www.0xdecafbad.com
> Sent: Tuesday, 24 May 2005 9:53 AM
> To: Asterisk Users Mailing List - Non-Commercial Discussion
> Subject: RE: [Asterisk-Users] ISPCON Mini-emergency: ATA186 
> Power Cube OKonSPA841?
> 
> On Tue, 2005-05-24 at 09:41 +1000, Terry H. Gilsenan wrote:
> > Hi,
> > 
> > I have used the Cisco ata186 powersupply in the SPA1000 and 
> it worked 
> > fine (ditto for the reverse)
> > 
> > Regards,
> > T
> 
> The biggest thing to watch is that the amperage is at least as high.
> The device wont draw more than it needs (not true of voltage 
> but is true of amperage) but if you try to draw more than the 
> transformer outputs it will get really hot and eventually the 
> transformer will die. 
> 
> Polarity is aparently the same (most use center positive to prevent
> accidental shorting), but should be marked    
>   - ----C ---- +
> something like that so you can tell if its the same.  
> 
> In a conference hall odds are power is unclean (especially 
> with long extension cords where you get more hramonic 
> distortion and such) and RMS is lower than stated, but it 
> shouldnt be too big of a problem for that..
> 
I found that the voltage, current and polarity for the two supplies are
identical.

I have also used them interchangeably for about 12 months in .au and .pg