Hi,
What is the benefit of this chip. I see it often on shematics. On a unipolar driver, I suppose in a way that it is there to clean the output of the parallel port. But probably there is more than that to its usage. Does it improve the performance?
A 7805 is often used to feed the 5 volts needed by the chip. Is the 5 volts output from a computer power supply good enough to replace the 7805.
Thanks!!
Alain |