AudioCircle
Audio/Video Gear and Systems => Power Conditioning => Topic started by: kenreau on 14 Jan 2020, 09:16 pm
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(https://www.audiocircle.com/image.php?id=203319)
I’m uncertain of the replacement PS specifications I should look for. I’m considering replacing a cyberpower ps that came from my ISP to power the Fiber optic to Ethernet conversion at my house service entry.
The PS label reads;
Input 100V-240V. 0.75 Amps
Output 12Vdc = 24W
I’m struggling with what Amp rating a PS would need. Unless I have the wrong formula, wouldn’t a 2A PS be called for? I’m not tracking with their 0.75A spec.
I have an iFi 12Vdc (1.8A) wallwart PS I was thinking of trying out, but want to check if it’s output is in the ballpark first.
Thx
Kenreau
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I’m struggling with what Amp rating a PS would need. Unless I have the wrong formula, wouldn’t a 2A PS be called for? I’m not tracking with their 0.75A spec.
According to your specs, the 0.75A is the max current required from the 100V-240V AC Input.
If the Output is 12VDC / 24W, then yes, a 2A supply would be in the ballpark, depending on the Power Factor of the circuit, which is why many power supplies have a VA rating as well as watts.
Also, it probably doesn't say 24VDC = 24W, what you're seeing as an equals sign is likely a long dash with three small dashes underneath it, an icon for DC.
Your 12VDC @ 1.8A replacement supply is in the ballpark, but of course it's always better to be on the high side than the low side as far as maximum current output.
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Thanks, Steve. Correct on the == symbol for Vdc. I just added a photo (I should have done originally)
Thx
Kenreau