From: "quest of knowledge"
Subject: Re: can u show a schematic of power supplies of 3.6 V no matter the fluncturation of Solar Photovoltaics...
Date: Sun, 15 Dec 2002 21:24:15 +0800
Organization: IMS Netvigator
X-Newsreader: Microsoft Outlook Express 5.00.2314.1300
Wim Ton wrote in message
> Have a look at the websites of the various IC manufacturers, like Maxim
> (www.maxim-ic.com) or Texas Instruments (www.ti.com) The have a range of
> and down converters. You will need a battery in a GSM cell-phone anyway,
> the data is transmited in bursts, and the phone draws high peak currents,
> especially when it is far from a base-station, like in a forest.
> > my cell Ericsson R320 S need 3.6V 650mAH, but I wish to use Photovoltaic
> > connect to my cell phone. The whole cell phone will be placed in the
> > or near the steams.
> > I have two solar panel or I will buy two set of photovoltaic ( array to
> > complete the above project).
I have one original Ericsson battery make in UK, it is no longer can be
re-charged and it will my experiment to open it up and connect two wire out
to a external chargable battery and add a diode and let the sun to recharge
I have experimented with Ericsson T788 with a common chargable battery
What happen is all of the time is the cell phone is on standard status. I
have to re-write part of the program and at certain time of the day to
trigger a data polling to send the temp data from the steam as SMS to my
base station on home.
I have been NZ to see other demonstration on the hill at queenstown. They
use very large PV array to charge battery to capture weather data.
Well I need to see some schematic to start with.