O/I POWER?

[Al Skierkiewicz]

Originally Posted by popo308

Hey, another question would a computer power supply be able to power and o/i with the 12v out with 4.2 volts? would it be able to power 6 o/i's?

Brent,
Not sure what you are asking with the reference to 12 and 4.2 volts. Let's not forget that OI is powered from 12 volts through the tether cable. But before attempting anything like this, a prudent thing would be to call IFI tech support for help. In any wiring to multiple devices, steering diodes would be a nice addition to fused lined lines for each device.

[popo308]

Well the O/i's can handle up to 12vdc. right now we have 3 running at 12vdc at 1500Ma. A computer power source can do 4.2 amps. We need the amp power for running more than 3 and 4.2A should be plenty.

[Eldarion]

Originally Posted by popo308

...4.2A should be plenty.

Technically each OI can draw up to 1000mA (1 amp!) at 12 volts.

[popo308]

hmm interesting.... Well right now we have 3 running on a 12volt 2000Ma and there not cutting out or anything.

[Al Skierkiewicz]

Brent,
Keep this in the back of your head...Many computer power supplies need a minimum load current to turn on. If your power should fail at some point, it might be there is not enough current in the loads.

[FourPenguins]

If you have access to one, I'd suggest an old (pre-ATX) power supply, as these use a simple on/off switch to turn on as opposed to having to short pins on the mobo connector.

[AdamHeard]

Originally Posted by Al Skierkiewicz

Brent,
Keep this in the back of your head...Many computer power supplies need a minimum load current to turn on. If your power should fail at some point, it might be there is not enough current in the loads.

I've heard from our EE (Dale hall, used to post here) that a resistor or LED is usually sufficient load to achieve this.

Never tried it myself though.