12V DC Adapter

notclear

Member
Just got the Apex and EB8, if I want to plug the control unit to UPS I need to get a 12V DC adapter. My question is the center of the connector is positive or negative?
 
I have an Ecotech backup battery for my MP. It has two dc outputs, both 12v. Ecotech told me it is a 18 amp hour battery. I would like to use one of the 12v ports to my Apex, so if my GFCI trips which it will, my MP will run and my Apex can email me to reset. So you believe it does not matter the amount of amp the Ecotech battery puts out???
 
The 12v 500ma adapter is just to run the base unit not one of the EB8's. If you want to run a device and you want to be able to control that device via the Apex, then you have to plug the EB8 into the UPS. If you do that, then the Apex can't detect a power failure. You would need a second EB8, not running on the UPS. Then put the critical devices on the UPS powered EB8. You can program the Apex to shut some of them down as well as soon as the Apex sees the power failure on the non-UPS EB8.
 
What I want to accomplish is GFCi trips and all power stops, the Ecotech battery will supply power to the mp for circulation and all else I want is to get an email. My home would still have power so Ethernet and router would work normally.

What is the code in the email alert for power failure?
 
I put one on mine and what I found is that the generic heavy power supplies tend to run little too high on open circuit voltage (14 - 18V) making the left side of the Apex base very warm. I switched to the newer switching PS that has open cct voltage 12V and the base is nice and cool. I'm sure that this is much better for the regulator inside. And your carbon footprint will shrink too.
 
I just measured the voltage output on the adapter with open circuit, it is 16.3 volts. Is this still safe to use?

Where do you get the newer adapter and what brand, etc.?
 
I buy localy these ones:
http://www.rpelectronics.com/English/Content/Items/RPR-12600-P5.asp

it's under: Power Supplies/ Inverters/ Adapters: AC/DC Adapters - Switching
RPR-SMALL.JPG
 
Last edited:
Denis: Thanks for the link.

Alan: The adapter I have is marked as 12VDC, but as Denis points out most generic adapters have output voltage greater than the listed 12VDC. And I believe once it is connected to the equipment the voltage will drop. But for sure I will order the 12VDC switching adapter.
 
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