Article View: sci.electronics.design
Article #73Re: Interesting product
From: John Larkin
Date: Fri, 01 Feb 2013 05:34
Date: Fri, 01 Feb 2013 05:34
55 lines
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3618 bytes
On Thu, 31 Jan 2013 21:01:20 -0800, SoothSayer <SaySooth@TheMonastery.org> wrote: >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. EEs should be legally exempt from having to use low-flow shower heads. We get all our best ideas in a good hot shower. -- John Larkin Highland Technology Inc www.highlandtechnology.com jlarkin at highlandtechnology dot com Precision electronic instrumentation Picosecond-resolution Digital Delay and Pulse generators Custom timing and laser controllers Photonics and fiberoptic TTL data links VME analog, thermocouple, LVDT, synchro, tachometer Multichannel arbitrary waveform generators
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From: John Larkin <jjlarkin@highNOTlandTHIStechnologyPART.com>
Newsgroups: sci.electronics.design,aus.electronics
Subject: Re: Interesting product
Date: Thu, 31 Jan 2013 21:34:21 -0800
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