I'm having a hard time completely understanding PNP and NPN transistors. I know that PNP is meant to be pulled low and has a common anode and NPN is meant to be pulled high and has a common cathode. But why, for instance, could I not just use an NPN transistor in this circuit?:
http://www.crossroadsfencing.com/NPN-PNP_control.jpg
Why do we need an NPN pulling a PNP low? Why can't we have the NPN emitter to the motor?
I'm not doing anything in particular, I'm just trying to understand this.
Thanks!
http://www.crossroadsfencing.com/NPN-PNP_control.jpg
Why do we need an NPN pulling a PNP low? Why can't we have the NPN emitter to the motor?
I'm not doing anything in particular, I'm just trying to understand this.
Thanks!