Average Reviews:
(More customer reviews)As the specification for USB current draw on the power (+5V) is 500 ma, I got to wondering how much my Ritelite LPL792 light actually uses of that 500 ma available when attached to a normal USB port - I was concerned that, due to it's brightness, it would exceed the maximum current draw spec for USB and possibly damage my computer.
So,I measured the USB current used by this light.
I hooked it up to a quality 5V power brick that is capable of producing up to 3 Amps (it is complete with ferrite noise filter sleeve) and I tested the light for function first: Bright; Dim; and Off. It worked the same as when I have it plugged into my computer's USB port.
Then, using an accurate digital desktop multimeter, I measured the current draw - Here are the results:
Bright: 188 ma
Dim: 95 ma
Off:0 ma
So there are no worries that this light will exceed the 500 ma maximum spec for your USB port!
I got this light from Amazon because the single LED light I had purchased at Staples just didn't put out sufficient light to my eMachines laptop keyboard for use in a darkened room. The Ritelite LPL792 light does.
So I gave it 4 stars because it works very well (but it was slightly difficult to place it so that my hands don't block the light while keying).
Click Here to see more reviews about: Ritelite LPL792 5-LED Computer Light, Metal
This laptop plug in light comes with five super bright white LED's that last up to 100,000 hours. No batteries required; the LED light plugs directly into the USB port on any computer or other device. This laptop computerlight has dual light output; the super bright white light illuminates from the front and the soft blue up-light illuminates from the back for reduced eyestrain. Features one-touch ON/OFF/DIMMER operation. Press once for full brightness, again for softer light and a third time to turn the light off. This USB light has an 8" flexible neck for positioning at almost any angle. Perfect for school, home, the office, travel and much more! Assembly level/degree of difficulty: No Assembly Required.
Click here for more information about Ritelite LPL792 5-LED Computer Light, Metal
0 comments:
Post a Comment