well it seamed easy and i couldnt find a L298 at the store where i got my components from. ((l298 probably no longer sold in europe due to poison materials used in it, so i skip it)
i understood from a friend that a darlington is also able to handle higer currents, i believe the normal uln2003 handles 20v max.or do you mean something else, i was wondered too about these sense functions, must perhaps be able to do something more ?.or... might it rather be a protection (ie if the motor cannt rotate for a mechanical reason, that the circuit wont get damagedi'm wondering.. alhtough the uln2003 would protect the l297 for such mechanical failures too i think, the driver electronics wont backfire.which would happen if the l297 had no driver unit at all... perhaps the l298 needs a bit of protection too ?? perhaps as it might be designed for even much larger currents ? (it got a huge cooling fan)
so the darlington takes more current ..resulting in a faster battery drain.. am i correct ?