My italian understanding is very bad :/ I try to understand how use the LP38690-ADJ to have 5v on output with a 7.2v battery in input. I don't know which value I need to use for R1 and R2 <http://www.national.com/images/pf/LP38690-ADJ/20126701.jpg>
--- In [email protected], Davide Cantaluppi <[EMAIL PROTECTED]> wrote: > > Hi to all, there is an italian post on yahoo groups > http://tech.groups.yahoo.com/group/foxboard/message/12 > > It says that they successfully power a fox board for 1 hour using 4 1.5 V e > 800 mA > Batteries producted by Panasonic (red & black covered) > The contact is Emanuele Calò ([EMAIL PROTECTED]) > Try to ask him > > > I don¹t know if is interesting for you > > Bye > > Davide > > > Il 31-05-2007 22:33, "Wolf" <[EMAIL PROTECTED]> ha scritto: > > > > > > > > > > > In message <[EMAIL PROTECTED] <mailto:f3nanb%2B8ndd%40eGroups.com> >, > > psykojyce writes > >> > --- In [email protected] <mailto:foxboard%40yahoogroups.com> , > >> Wolf <foxboard@> wrote: > >>> > > > >>> > > In message <f3n2oe+b4ea@>, psykojyce writes > >>>> > > > > >>>> > > > hum. ok. > >>>> > > > > >>>> > > > So, is there a way to get the board autonomous with a battery > >>>> > > > (without > >>>> > > > the FPS)? > >>> > > > >>> > > > >>> > > Yes - build your own low-dropout voltage-regulator. > >>> > > > >>> > > I would suggest something based around this: > >>> > > > >>> > > http://www.national.com/pf/LP/LP38692-ADJ.html > >>> > > > >>> > > which will give you 5.0 volts output with an input voltage > >>> > > as low as 6 volts (so letting you run your 7.2V battery well > >>> > > into the 'must recharge' zone!). > >>> > > > >>> > > ++Tanuki > >>> > > http://canismajor.demon.co.uk/ -- running on a Foxboard. > >>> > > > >> > > >> > Thanks, > >> > It seems interresting. > >> > But my electronic skills are low :/ > >> > Have you a complete schema to use the LP38692-ADJ ? > >> > Thanks. > > > > The URL I posted gives pretty much all you need to know; of course if > > you need a printed-circuit-board designed then that's something you > > should consult a production-tech for. I generally prototype these sorts > > of things using copper-stripboard because I only do small production and > > the cost of designing/producing a printed-circuit is not justified. > > > > ++Tanuki > > http://canismajor.demon.co.uk/ > > > > > > > > > [Non-text portions of this message have been removed] >
