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Resolve Simple Circuit Problem

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Resolve Simple Circuit Problem

Postby e-yellow » Wed Mar 13, 2013 11:54 am

Hi everybody,
I am sorry for my basic question but I could not find the answer.
I have a Cioks DC 10 power supply with several outputs and I need to power up a device that needs at least 12W and accepts 9 to 18 Volt (good would be 12 V).
http://cioks.com/index.php?option=com_c ... &Itemid=56

The power supply has followings specs:

Outlet 1-4: 9V DC / 100mA each
Outlet 5-6: 9 or 12V DC / 200mA each*
Outlet 7-8: 9 and 12V DC / 400mA
Outlet 9-10: 9 and 12 or 15V DC / 400mA
* can be merged into a 400mA section

I have no idea how to wire the outlets together to get 12W (9-18V)!
And I have no idea about anything I guess! :)

Thank you very much!
e-yellow
 
Posts: 2
Joined: Wed Mar 13, 2013 11:44 am

Re: Resolve Simple Circuit Problem

Postby pebe » Wed Mar 13, 2013 2:46 pm

There is nothing in the Cioks spec that states what its maximum total power output is.
I think you should address your question to Cioks, because they are likely the only people who can answer it.
pebe
 
Posts: 1058
Joined: Tue Dec 09, 2003 11:12 pm
Location: Ellon, Scotland

Re: Resolve Simple Circuit Problem

Postby e-yellow » Wed Mar 13, 2013 6:03 pm

I forgot to say, that I need to make parallel or/and serial connections with this cables:
http://cioks.com/index.php?option=com_c ... &Itemid=41
The problem is that I do not know how to sum the current and the voltage to get 12W (9-18V).

thx
e-yellow
 
Posts: 2
Joined: Wed Mar 13, 2013 11:44 am

Re: Resolve Simple Circuit Problem

Postby pebe » Thu Mar 14, 2013 11:33 am

Power in watts = voltage x current. So 12V at 1A will give 12W.

If sections 7 and 8 can each supply 400mA, then the two wired in parallel will give 12V at 0.8A. But the spec does not make clear whether the 400mA applies to each section, or the two sections combined.

Assuming it applies to each section and that you are allowed to connect sections in parallel, then putting sections 7, 9, and 5 combined will give you 12V at 1A.

This is probably a switched mode power supply and so the voltages of each section will be accurately controlled, but their voltages may differ slightly. So I am not at all sure that they can be connected in parallel, safely. As I said, you should consult the manufacturer.
pebe
 
Posts: 1058
Joined: Tue Dec 09, 2003 11:12 pm
Location: Ellon, Scotland


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