On Thu, Jun 26, 2008 at 12:07 PM, Tom=E1s =D3 h=C9ilidhe <toe@lavabit.com> =
wrote:
>
>
> Two AA batteries in series gives me 3 V.
>
> I'm thinking of going with the setup described on this page:
>
> http://www.linear.com/pc/downloadDocument.do?navId=3DH0,C1,C1003,C1042,C1=
033,P1468,D4253
>
> It uses the LT1173-5 chip to get 5 volts from 3 volts.
>
> I will use the 5 V to power my microcontroller, but I'm thinking of
> taking 3 V directly from the battery to power my LED's.
>
> Does this sound good?
>

Why not run the whole thing from 3V?  Most microcontrollers are happy at 3V.

Have you done as Olin suggested and traced the current v. voltage
curve for your LEDs?  I recommend you do this before deciding on a
power source.

Regards,
Mark
markrages@gmail
-- =

Mark Rages, Engineer
Midwest Telecine LLC
markrages@midwesttelecine.com

-- =

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