I ran into a problem with one of these yesterday that makes me leery of 
using them again.

http://www.mouser.com/Search/ProductDetail.aspx?R=SD-25B-24virtualkey63430000virtualkey709-SD25B-24

If the amperage goes over the rated max (1.1A) it appears the unit 
continues to allow dc through, but does not regulate it any longer.  So 
in my case, I had a well-charged battery powering a mikrotik rb450 as 
well as a couple Trango AP's (with the infamous heaters).  When I 
plugged in the second AP on a cold day, it momentarily caused the draw 
to go higher than 1.1A.  28+ volts started flowing through the 
"regulator" and caused the RB450 to go into overvoltage protection mode 
(ie: dead in the water).  

Will be trying out the Tycon Power and the Packetflux devices shortly. 

If Mikrotik comes out with another Routerboard that has 28v overvoltage 
protection...

What a waste.

Randy


Randy Cosby wrote:
> http://www.mouser.com/Search/ProductDetail.aspx?R=SD-25B-24virtualkey63430000virtualkey709-SD25B-24
>
> This is one I have tried at another small site, and it seems to work 
> well.  Hoped I could find something a little better amperage.  The next 
> bigger one these guys makes is too big, and has a fan that runs all the 
> time.
>
> Randy
>
>
> Randy Cosby wrote:
>   
>> Ah, that explains it :)
>>
>> Randy
>>
>>
>> Mike Hammett wrote:
>>   
>>     
>>> Scott Parsons that started PacWireless started the company that makes those.
>>>
>>>
>>> -----
>>> Mike Hammett
>>> Intelligent Computing Solutions
>>> http://www.ics-il.com
>>>
>>>
>>>
>>> --------------------------------------------------
>>> From: "Randy Cosby" <dco...@infowest.com>
>>> Sent: Monday, October 26, 2009 9:39 AM
>>> To: "WISPA General List" <wireless@wispa.org>
>>> Subject: Re: [WISPA] powering finicky mikrotiks on 24v solar
>>>
>>>   
>>>     
>>>       
>>>> Interesting.  That looks like a pacwireless product, but I have not seen
>>>> it before.  Any idea what the amp rating is for that?
>>>>
>>>> Jayson Baker wrote:
>>>>     
>>>>       
>>>>         
>>>>> Use these: 
>>>>> http://store.wisp-router.com/itemdesc.asp?ic=TP-DCDC-1218&eq=&Tp=
>>>>>
>>>>>
>>>>> On Mon, Oct 26, 2009 at 8:23 AM, Randy Cosby <dco...@infowest.com> wrote:
>>>>>
>>>>>
>>>>>       
>>>>>         
>>>>>           
>>>>>> Is anyone powering Mikrotiks on Solar?  What do you use to keep your
>>>>>> solar "boost" voltage from forcing a shutdown on the Mikrotik?  I've
>>>>>> used some 24 regulators, but they seem inefficient, and have low voltage
>>>>>> disconnects that are sometimes too sensitive - ie: if my battery goes
>>>>>> down to 22v, it will shut down completely (yes I know the batteries
>>>>>> should never go that low, but I don't live in a perfect world).
>>>>>>
>>>>>>
>>>>>> --
>>>>>> Randy Cosby
>>>>>> Vice President
>>>>>> InfoWest, Inc
>>>>>>
>>>>>> 435-674-0165 x 2010
>>>>>>
>>>>>> http://www.infowest.com/
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
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>>>>>>         
>>>>>>           
>>>>>>             
>>>>> --------------------------------------------------------------------------------
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>>>>>       
>>>>>         
>>>>>           
>>>> -- 
>>>> Randy Cosby
>>>> Vice President
>>>> InfoWest, Inc
>>>>
>>>> 435-674-0165 x 2010
>>>>
>>>> http://www.infowest.com/
>>>>
>>>>
>>>>
>>>>
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>>>>         
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>>   
>>     
>
>   

-- 
Randy Cosby
Vice President
InfoWest, Inc

435-674-0165 x 2010

http://www.infowest.com/




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