I don't really see what you're trying to do?, neither of the chips you mentioned have much output current capability (not really gaining much over the PIC). Either use ULN series drivers, or seperate NPN and PNP transistors - bear in mind you will probably have to invert the software as well.
I don't really see what you're trying to do?, neither of the chips you mentioned have much output current capability (not really gaining much over the PIC). Either use ULN series drivers, or seperate NPN and PNP transistors - bear in mind you will probably have to invert the software as well.
Of course you can, for the ones to ground - the top ones need to be PNP, with the emitter to +ve. Check my tutorial 'Hardware Extras' for examples of sinking and sourcing current.
Of course you can, for the ones to ground - the top ones need to be PNP, with the emitter to +ve. Check my tutorial 'Hardware Extras' for examples of sinking and sourcing current.
Of course you can, for the ones to ground - the top ones need to be PNP, with the emitter to +ve. Check my tutorial 'Hardware Extras' for examples of sinking and sourcing current.
Of course you can, for the ones to ground - the top ones need to be PNP, with the emitter to +ve. Check my tutorial 'Hardware Extras' for examples of sinking and sourcing current.
Ya I checked ur Sinking' current from a lamp. But u cant aply it to this PIC CLOCK project. Coz Anode and Cathodes are driving from PIC. I am confused now
One side of the display connects to 0V (sink current - NPN), the other side connects to the +ve (source current - PNP), they don't need to switch both ways.
One side of the display connects to 0V (sink current - NPN), the other side connects to the +ve (source current - PNP), they don't need to switch both ways.