Battery -+---|<----/\/\/\/---------+----regulator---Alternator
| |
---->|-------+--------|<--|
|
|
Computer
For the diodes above you should probably use a couple of power diodes in
parrallel. The resistor depends on the charge current you want. You could
make it 2 resistors like this:-
GND-----+----Battery----|<----/\/\/\/---+---\/\/\/\----+--regulator
| |
----------->|--------------------
Zenner (or a series of them) to limit voltage to say 30V
Maybe add a fuse in series with the battery to prevent overcharging
current if the zenner's blow or the PC short circuits.
Yeah so my formal training was in Electronics :-)
On Thu, 23 Oct 2003, Ulung Gurtala wrote:
> This is slighltly off topic but I'm sure someone have come across a similar
> problem and have a solution for it.
>
> I have a 24vDC PC thats going in a truck. I want to ensure there is a reliable
> power supply and ensure that if the power is interupted the pc will not
> shutdown. I can source a 24v Battery with enough juice to run the pc for 15 min
> when the truck ignition is off. What Iam unsure of is the wirring and other
> electronic gear to ensure that whilst the truck is going (running) it is using a
> regulated 24v of the trucks electrical system and trickle charging the battery
> if it is not fully charged and if the truck ignition is off it uses the
> batteries and allows the users to shut the system down gracefully.
>
> Any help is appreciated.
>
> Cheers
>
>
--
---<GRiP>---
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Linux Guru, SLUG/AUUG/Linux Australia member, Sydney Flashmobber,
BMX rider, Walker, Raver & rave music lover, Big kid that refuses
grow up. I'd make a good family pet, take me home today!
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