Re: [Paparazzi-devel] Paparazzi-devel Digest, Vol 91, Issue 27

[Chris]

Hi Hector.
I agree that separate batteries is one good solution and i do use it as 
you do
but i still like the idea of having one battery to charge/replace.
(I do use a separate 12v lipo for the rest of the electronics plus a 
6.6v A123 pack for the servos regularly).
When i say regulators i mean the switching type.
They run cool but they do have the a problem as they are not the 
isolating type
but rather the typical synchronous back converters.
Chris


> ------------------------------
>
> Message: 4
> Date: Fri, 7 Oct 2011 21:04:05 +0200
> From: Hector Garcia de Marina<address@hidden>
> To: address@hidden
> Subject: Re: [Paparazzi-devel] Different Paparazzi autopilot flavors
>         opinion.
> Message-ID:
>         <address@hidden>
> Content-Type: text/plain; charset="iso-8859-1"
>
> Hello Chris,
>
> In my opinion 18V input limit is ok (cheap and reliable components). I only
> work with higher voltages when the plane is really big (seeing the room
> available for the autopilot).
> In this case, there is no problem to work with dedicated batteries for
> autopilot and servos as there is enough room and the consumption is relative
> low (small batteries), actually I prefer this configuration when I am
> dealing with high DC voltages.
>
>
> What i came up with was a self constructed YAPA type autopilot which can
> > take up to 40v dc
> > input, has a small dedicated 5-3.3 v regulator for the autopilot only,
> mm this could be dangerous, a 35V drop consuming 100mA are 3.5Watts that the
> regulator has to dissipate.
>
> Cheers.