Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]
Groups > sci.electronics.design > #446218
| From | rickman <gnuarm@gmail.com> |
|---|---|
| Newsgroups | sci.electronics.design |
| Subject | Re: Battery charger with solar panel |
| Date | 2017-02-04 22:36 -0500 |
| Organization | A noiseless patient Spider |
| Message-ID | <o766h4$25v$1@dont-email.me> (permalink) |
| References | <o75ea0$j8l$1@l01news1.ot.hr> <o75lag$o0v$1@dont-email.me> <bimc9cl88e02e23hnvna4382cjob6vro25@4ax.com> <o75ru6$h2c$1@dont-email.me> <7vvc9clqibr3onc1vd2si7govov72qak40@4ax.com> |
On 2/4/2017 9:17 PM, Jeff Liebermann wrote: > On Sat, 04 Feb 2017 16:35:25 -0800, mike <ham789@netzero.net> wrote: > >> Do you really need 75Wh/day? >> http://www.harborfreight.com/15-watt-solar-battery-charger-68692.html >> For $12, it's hardly worth walking all the way to the lab to >> turn on a soldering iron so you can spend way more than that >> making one. > > Argh. That's an amorphous silicon solar panel. Low efficiency (about > 7%) but cheap to produce and works in low light and shade: > <http://www.solar-facts-and-advice.com/amorphous-silicon.html> > <http://energyinformative.org/amorphous-silicon-solar-panels/> > In full sunlight, open circuit voltage = 20v and short circuit current > = 0.1A or 2 watts. Not sure why you are multiplying these numbers, but assuming this is the potential power output from the panel is a faulty deduction. Is this just a convention for rating a panel? -- Rick C
Back to sci.electronics.design | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread
Battery charger with solar panel gm <notmy@mail.com> - 2017-02-04 21:41 +0100
Re: Battery charger with solar panel Jim Thompson <To-Email-Use-The-Envelope-Icon@On-My-Web-Site.com> - 2017-02-04 13:49 -0700
Re: Battery charger with solar panel Baron <baron@linuxmaniac.net> - 2017-02-04 21:39 +0000
Re: Battery charger with solar panel rickman <gnuarm@gmail.com> - 2017-02-04 17:05 -0500
Re: Battery charger with solar panel mike <ham789@netzero.net> - 2017-02-04 14:42 -0800
Re: Battery charger with solar panel Jim Thompson <To-Email-Use-The-Envelope-Icon@On-My-Web-Site.com> - 2017-02-04 16:00 -0700
Re: Battery charger with solar panel mike <ham789@netzero.net> - 2017-02-04 16:35 -0800
Re: Battery charger with solar panel Jim Thompson <To-Email-Use-The-Envelope-Icon@On-My-Web-Site.com> - 2017-02-04 17:38 -0700
Re: Battery charger with solar panel rickman <gnuarm@gmail.com> - 2017-02-04 19:42 -0500
Re: Battery charger with solar panel Jasen Betts <jasen@xnet.co.nz> - 2017-02-05 04:22 +0000
Re: Battery charger with solar panel mike <ham789@netzero.net> - 2017-02-04 23:26 -0800
Re: Battery charger with solar panel rickman <gnuarm@gmail.com> - 2017-02-06 19:55 -0500
Re: Battery charger with solar panel rickman <gnuarm@gmail.com> - 2017-02-06 19:54 -0500
Re: Battery charger with solar panel Jasen Betts <jasen@xnet.co.nz> - 2017-02-07 03:55 +0000
Re: Battery charger with solar panel rickman <gnuarm@gmail.com> - 2017-02-06 23:41 -0500
Re: Battery charger with solar panel Jeff Liebermann <jeffl@cruzio.com> - 2017-02-04 18:17 -0800
Re: Battery charger with solar panel rickman <gnuarm@gmail.com> - 2017-02-04 22:36 -0500
Re: Battery charger with solar panel Jeff Liebermann <jeffl@cruzio.com> - 2017-02-05 01:03 -0800
Re: Battery charger with solar panel Don Y <blockedofcourse@foo.invalid> - 2017-02-04 22:02 -0700
Re: Battery charger with solar panel dakupoto@gmail.com - 2017-02-04 22:25 -0800
Re: Battery charger with solar panel boB <boB@theresnoplacelikehome.com> - 2017-02-05 16:38 -0800
csiph-web