[Diy_efi] DIY-WBO2 circuit improvement suggestion

[bcroe at juno.com]

Yeah, that could work if you set up the 338 to handle 
20 watts without thermal shutdown.  Of course only 
about 25% of the input power would reach the sensor.
You will need several times as much battery (I think 
the original problem was a battery couldn't maintain 
14 volts).  So now you have this rather large battery, a 
DC-DC converter, a 20 watt voltage regulator, and a 
DIY-WB on.......  a motorcycle, right?

Of course if the sensor could run directly from the 
motorcycle or a battery, life would be simpler.  Some 
experiments are underway to try and do this.

Bruce Roe

On Wed, 19 Jun 2002 09:43:57 -0400 "Tomas Sokorai Sch." 
<tsokorai at xperts.cl> writes:
> How many amps does the DIY-WB @14V draw?
> if it's less than 5, then the idea of a DC-DC converter is 
> pretty good, you step the voltage up to 24, and then use 
> a LM338, it's a VERY easy to use voltage regulator, can 
> supply 5A, it's even adjustable *and* is cheap :) . 
> 
> 
> Tomas
> 
> 
> On Wednesday 19 June 2002 02:34, bcroe at juno.com wrote:
> > A 12 - 14V input doubling converter might put out up
> > to 28 volts.  There are several parts in the DIY-WB that
> > could not withstand that stress.  

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