[modeleng] Re: Topsy - to charge and how to charge, that is the question!

From: "Peter Sheppard" <peter.sheppard@xxxxxxxxxx>


>
> I note the use of the diode, but shouldn't it be the +ive terminal to the
> battery ? (the pointy end!)

No! You want the current to flow only when the alternator is MORE positive 
than the battery or the battery/load combination.


> With regard to the petrol/electric bit, my main concern is that when the 
> motor
> is pulling serious current (it limits at 96A on 24v dc) then the 
> alternator
> will try and fill that gap (or at least it will try until it current 
> limits).

You have to have a motor that will not take more than the alternator can 
supply except for short transient loads.

............................
have no idea what
> the maximum charge current of a 24v alternator is - any suggestions?

That is like asking how long is a piece of string. Alternators are built to 
provide different output currents depending on their use. There should be a 
plate giving voltage and max load current.

John Rippengal 

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