Author Topic: Body heat powered watch  (Read 2092 times)

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Offline Piotr_ts

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Body heat powered watch
« on: November 10, 2017, 04:16:31 pm »
Hi,
I found today advert of this watch:
https://www.powerwatch.com/
Sniff, sniff... am I the only one smelling BS?  :bullshit:

According to this article:
http://www.electrochem.org/dl/interface/fal/fal08/fal08_p54-56.pdf
Seiko build such a watch but the cell was providing only 22 uW of energy. I strongly doubt it is possible to power a device with a display and a wireless communication from such source.
What do you think? Looks like a subject for a debunking video.

Piotr
 
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Offline Simon

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Re: Body heat powered watch
« Reply #1 on: November 28, 2017, 06:42:34 pm »
Dave did a video on this, no it's hopeless, there is not enough temperature difference to make the power.
https://www.simonselectronics.co.uk/shop
Varied stock of test instruments and components including EEVblog gear and Wurth Elektronik Books.
Also, if you want to get ripped off: https://www.ebay.co.uk/usr/simons_electronics?_trksid=p2047675.l2559
 

Offline Gyro

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Re: Body heat powered watch
« Reply #2 on: November 28, 2017, 06:43:33 pm »

I can't think why they're bothering. A photovoltaic panel is going to be much thinner and more efficient.... and a watch has a dirty great window on the front.  :palm:
Chris

"Victor Meldrew, the Crimson Avenger!"
 

Online SparkyFX

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Re: Body heat powered watch
« Reply #3 on: December 03, 2017, 02:34:57 am »
There are solar powered wrist watches on the market... since decades.
Support your local planet.
 

Offline npelov

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Re: Body heat powered watch
« Reply #4 on: December 13, 2017, 09:40:46 pm »
There are solar powered wrist watches on the market... since decades.

They could have put a solar cell and say that the cell is just to add to "body power"   :-DD, and actually power the watch only by the solar cell and a battery. At least solar cell is proven to work and the product won't fail.
 


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