Does this make any sense? Touchscreen 20W consumption, 1.2A

[designer82]

Below is a link to a Dell 22" touchscreen monitor that has a 20W power consumption 1.2A.

How does this make sense. I've noticed this with other computer power components too such as 65W power adapters at 1.5A.

Dell Technologies Official Site | Dell UAE

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www.dell.com

have to click on "tech specs"

I've attached the pic of the power section for easy reference.

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Image 2-Untitled hosted in ImgBB

ibb.co

 

[petersonra]

good question. PF must be very low. or they are describing the max current rather than nominal. It is curious that it is described as 1.2 A for 100 to 240 V too. One would think it would be more at the lower voltage. I see this on industrial power supplies too.

 

[designer82]

I'm thinking you hit the nail in the head. Power Factor!

 

[zbang]

I doubt it's PF especially for modern devices (which usually have PF correction), more likely its that nobody wants to put a rating of under 1 amp on a device.

Copying from Dell-
Voltage Required
100 to 240 VAC / 50 or 60 Hz ± 3Hz / 1.5 A (typical)
(One amperage number for a 2.4:1 voltage range...... Ohm would have words about that.)

Power Consumption (Operational)
16W (Energy Star)
18W (typical)
52W (maximum)/16W (Energy Star)

52w @ 100v = 1.9 amp

 

[Open Neutral]

Buy a Kill-oh-What meter, and power the monitor through it.
V, A, VA, watts and PF right there.

 

[Open Neutral]

P3 P4400 Kill A Watt