On 09.03.2010 01:25, OneStone wrote:
:
> resistors) and what channels they can connect through
for a result. Of
> course designing a low power app with a divider across the battery that
> is in circuit all the time isn't a great idea, since it will usually
> draw current all the time. why li-ion and an LDO, wasteful of energy if
:
inserting a FET in series with the resistors controlled by a port pin
should help.
Hardy
How to measure battery voltage by ADC?
Started by ●March 8, 2010
Reply by ●March 9, 20102010-03-09
Reply by ●March 9, 20102010-03-09
iT'S BECOMING A BIG AND BULKY small system ;@}.
Al
Hardy Griech wrote:
> On 09.03.2010 01:25, OneStone wrote:
> :
>> resistors) and what channels they can connect through for a result. Of
>> course designing a low power app with a divider across the battery that
>> is in circuit all the time isn't a great idea, since it will usually
>> draw current all the time. why li-ion and an LDO, wasteful of energy if
> :
>
> inserting a FET in series with the resistors controlled by a port pin
> should help.
>
> Hardy
>
Al
Hardy Griech wrote:
> On 09.03.2010 01:25, OneStone wrote:
> :
>> resistors) and what channels they can connect through for a result. Of
>> course designing a low power app with a divider across the battery that
>> is in circuit all the time isn't a great idea, since it will usually
>> draw current all the time. why li-ion and an LDO, wasteful of energy if
> :
>
> inserting a FET in series with the resistors controlled by a port pin
> should help.
>
> Hardy
>
Reply by ●March 10, 20102010-03-10
Thanks to everyone from your suggestions. I have never used ADC as any
application.
I felt a bit for confusion even read some documents.
It has 16 channels on MSP430 F5435. Which channel could be used to
measure battery voltage?
Battey voltage is connected to A12 as bellow. Is it correct?
http://e2e.ti.com/cfs-filesystemfile.ashx/__key/CommunityServer.Discussi\
ons.Components.Files/166/8715.noname.JPG
ions.Components.Files/166/8715.noname.JPG>
--- In m..., OneStone wrote:
>
> iT'S BECOMING A BIG AND BULKY small system ;@}.
>
> Al
>
> Hardy Griech wrote:
> > On 09.03.2010 01:25, OneStone wrote:
> > :
> >> resistors) and what channels they can connect through for a result.
Of
> >> course designing a low power app with a divider across the battery
that
> >> is in circuit all the time isn't a great idea, since it will
usually
> >> draw current all the time. why li-ion and an LDO, wasteful of
energy if
> > :
> >
> > inserting a FET in series with the resistors controlled by a port
pin
> > should help.
> >
> > Hardy
> >
> >
> >
> >
> >
> >
> >
application.
I felt a bit for confusion even read some documents.
It has 16 channels on MSP430 F5435. Which channel could be used to
measure battery voltage?
Battey voltage is connected to A12 as bellow. Is it correct?
http://e2e.ti.com/cfs-filesystemfile.ashx/__key/CommunityServer.Discussi\
ons.Components.Files/166/8715.noname.JPG
ions.Components.Files/166/8715.noname.JPG>
--- In m..., OneStone wrote:
>
> iT'S BECOMING A BIG AND BULKY small system ;@}.
>
> Al
>
> Hardy Griech wrote:
> > On 09.03.2010 01:25, OneStone wrote:
> > :
> >> resistors) and what channels they can connect through for a result.
Of
> >> course designing a low power app with a divider across the battery
that
> >> is in circuit all the time isn't a great idea, since it will
usually
> >> draw current all the time. why li-ion and an LDO, wasteful of
energy if
> > :
> >
> > inserting a FET in series with the resistors controlled by a port
pin
> > should help.
> >
> > Hardy
> >
> >
> >
> >
> >
> >
> >
