Hi Guys............
I am trying to design a H- Bridge Motor Driver...............
here is the circuit which will remain activated at one time...(i.e. these two darlington pairs are opposite diagonally, if we place the them in normal H form..)
**broken link removed**
here i have given 5 volt input supply to ensure logic 1 at the input..
and the 3 ohm resistor is the load i.e. motor in this case...........
the problem is you can see that i am not getting the sufficient output across the load... and a lot of voltage is dropping across the darlington pairs i.e. TIP122, TIP127..
this means that the darlingtons are not working in saturation region, but i have solved all the mathematical equations for the circuit... and had calculated the value of resistor such that darlingtons should remain in SATURATION region........
I am not getting the problem...........
according to me it should be working fine......
but it's not....working that way.........
Please help me out with this..............
Nikhil.....