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Old 12-06-2016, 04:54 PM
 
Location: SF Bay Area
13,520 posts, read 22,064,834 times
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Ummm ... is there such a thing as a 200-watt USB heater?
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Old 12-06-2016, 08:54 PM
 
1,080 posts, read 1,187,024 times
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pops popcorn while there pc melts

they used to make a ciarette lighter for your pc but i wouldn't even trust that with the power draw

http://www.frozencpu.com/cig-01.html
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Old 12-07-2016, 06:23 AM
 
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Keep in mind the difference between the maximum spec for something (here, the USB port) and the specs in a particular configuration. Kinda like a 110v power converter rated for 50 watts. The plug may be good for 15 amps and 1650 watts overall, but the converter isn't.

I know of no USB port on an actual machine spec'd for the voltage or amperage to get even close to 200W. Too much risk of damage on both ends. No PC board trace could handle that current. Even a jumper would need to be pretty robust. And where's the demand? Not anywhere you have a 110V outlet. Away from an outlet, on a notebook? For a minute or two (maybe 15 min with a large laptop battery) until the battery is dead.

Let's use some common sense here.
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Old 12-08-2016, 07:28 PM
 
Location: (six-cent-dix-sept)
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watts measure power.
warmth is measured in kelvin (or fehrenheit).
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Old 12-09-2016, 06:39 AM
 
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^ actually, temperature is measured in Kelvin, Centigrade or Fahrenheit. Warmth, or more properly heat, is measured in BTU or Joules. Heat transfer is measured in Watts, which is one Joule per second.

Simple, no?
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Old 12-09-2016, 12:10 PM
 
Location: (six-cent-dix-sept)
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^ (standing applause).
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Old 12-11-2016, 09:05 AM
 
Location: Hiding from Antifa!
7,783 posts, read 6,063,358 times
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Quote:
Originally Posted by Hemlock140 View Post
Placebo effect. At my office, personal heaters that plug into AC are not allowed. If too cold, your only choice is the USB heater lap blanket. They are useless, according to those that tried them. While I find it a bit too warm at the setting of 70 they keep it at, others are working in coats. When you have 3 floors with 400 people there is no way to make everyone comfortable.
It's the time of year again. Slip another lump of coal into the stove while Scrooge is looking the other way.
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Old 12-11-2016, 09:34 AM
 
14,612 posts, read 17,424,739 times
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Quote:
Originally Posted by harry chickpea View Post
IDIOTIC 200 watts through a USB connector is like someone saying you can pee at firehose strength through your dick.
I think you are exaggerating a little. The 100W power delivery has been a goal for many years and was finally reached in 2014. The Apple MacBook has only one port that delivers both data and power at 100W which is sufficient to power the computer.

USB power standards
5 Volt
Specification Current Power
Low-power device 100 mA 0.50W
Low-power SuperSpeed (USB 3.0) device 150 mA 0.75W
High-power device 500 mA 2.5W
High-power SuperSpeed (USB 3.0) device 900 mA 4.5 W
Battery Charging (BC) 1.2 5A 25W
Type-C 1.5A 7.5 W
3A 15 W

20 Volt
Power Delivery micro-format 3 A 60 W
Power Delivery standard format or Type-C 5 A 100 W

Blankets that plug into USB ports.
http://image.rakuten.co.jp/trend-mar...loa00-0031.jpg

I think the 200W heater was mislabeled, and in fact requires a standard wall outlet, but 100W is within reason.
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Old 12-11-2016, 10:27 AM
 
23,563 posts, read 70,158,065 times
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Put 200 watts through a 100 watt fuse and see what happens.
Run a circuit that nominally uses 100 watts on a 100 watt fuse and see what happens.
I do have to admit I've stood next to guys that peed like horses (how the F*** do they do that? Did they replace their prostate with a gate valve?), but I don't think they had the stream of a firehose.
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Old 12-11-2016, 01:25 PM
 
41,815 posts, read 50,920,524 times
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Quote:
Originally Posted by harry chickpea View Post
I do have to admit I've stood next to guys that peed like horses (how the F*** do they do that? Did they replace their prostate with a gate valve?), but I don't think they had the stream of a firehose.
If I've had a few beers I sometimes amaze myself when I wake up in the morning. "When will it end...."
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