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Article #47Re: Interesting product
From: SoothSayer
Date: Fri, 01 Feb 2013 08:50
Date: Fri, 01 Feb 2013 08:50
42 lines
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2677 bytes
On Fri, 01 Feb 2013 13:58:56 +0800, Dennis <none@null.net.au> wrote: >On 1/02/2013 12:45 PM, John Larkin wrote: >> On Fri, 01 Feb 2013 10:39:08 +0800, Dennis <none@null.net.au> wrote: >> >>> Saw this advert - shower head with LEDs to illuminate the water stream, >>> coulour indicates temperature. >>> Supposedly without batteries or external power. >>> >>> "No batteries and external power supply needed. >>> The color change tells you the water temperature. >>> Bright LED light. >>> Approved by CE & RoHS certificates. >>> Electricity is generated by hydraulic mechanism." >>> >>> >>> I wonder what mecahnism they use to generate the power & if it really is >>> as bright as the marketing pictures depict! >>> >>> >>> No doubt they will make a few dollars out of it! >>> >>> >>> >> >> You could in theory have a shower head that delivered 50 watts or so of >> electrical power from the pressure drop. >> >> > > >Yeah you could but how would you do it in a consumer product flogged for >$10. > >Found a video here, doesn't look as bright as in the advert: >http://www.youtube.com/watch?v=gG1ZDpPA5l4 In an apartment, where the water is free, one could use such a device to generate some of their electrical need. Wasting much free water, of course. But folks do that all the time these days.
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From: SoothSayer <SaySooth@TheMonastery.org>
Newsgroups: sci.electronics.design,aus.electronics
Subject: Re: Interesting product
Date: Fri, 01 Feb 2013 00:50:31 -0800
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