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Article #70Re: Interesting product
From: SoothSayer
Date: Fri, 01 Feb 2013 05:01
Date: Fri, 01 Feb 2013 05:01
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On Thu, 31 Jan 2013 20:45:38 -0800, John Larkin <jjlarkin@highNOTlandTHIStechnologyPART.com> 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. Well, remove the restrictor, and you get that back. So, the generator can be set (designed) to spool up until the drop matches what a proper, restricted head would deliver. They would always be red with me. My showers are 125 degrees.
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From: SoothSayer <SaySooth@TheMonastery.org>
Newsgroups: sci.electronics.design,aus.electronics
Subject: Re: Interesting product
Date: Thu, 31 Jan 2013 21:01:20 -0800
Organization: TheMonastery.org
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