Re: [doc] Progress...

[Martin Gutkowski <martin@xxxxxxxxxxxxxx>]

Hi Nick

There's no adjustable pot, only a potential divider of about 10:1 
meaning the input can't be 12v. The signal generator Joe has doesn't 
generate a steep enough ramp for something to work (don't know exactly) 
even though he has built an amplifier to give him 50-odd volts.

My one piece of advice regarding Gunson equipment is that it's great if 
you only expect to use it once or twice. Any more than that and it'll 
fall apart or fail or both.

Martin

Nick Tomlinson wrote:

> Hi Martin,
>
> Sounds interesting. I can't recall seeing an adjustable pot. I'll have 
> to have another look but then again mine is working and I'm a great 
> believer in "if it's not broke, don't fix it".
>
> I got Halfords vouchers as my leaving present from the last company I 
> worked with (2nd day in new job today) and so I'm investing in one of 
> the Gunsons Sensor simulators. I know you can make the features for 
> about 2/3 price but the number of times I've made variable resistors 
> from the dregs of my toolbox....This sensor simulator has a signal 
> generator on it. 5v pk to pk I think. You could use this with some 
> mosfets to create a larger voltage maybe. This could be why the chips 
> go in the first place if the voltage is so high. I think todays chips 
> have a better rating than those made 20 years ago....Delorean ahead of 
> its time in my opinion.
>
> Mind you, maybe it would be easier to be able to get a different ECU 
> off a renault/ volvo that uses the same system that's ready available 
> and then design some adapter plugs to fit ! Now, would that be a 
> seller (and to the USA?)
>
> I always use a scope when I can but mine is 20 years old and rather 
> bulky...
>
> All the best.
>
> Nick.





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