The project i am talking about is this
I am new to the electronics things,so please forgive me,if my question seems to be a foolish one.My doubt is..
Why the transistor is connected after the motor and why not before??? If i am right current flows from +ve to -ve and in that case the transistor is placed after the current passes through the motor.Why so??In that case how is the transistor helpful in this circuit for amplifying current?? Can you please help me out of this confusion.
Thanks
The NPN transistor is being used as a low-side switch. A small current going in the Base and out the Emitter to Ground allows a large current going in the Collector and out the Emitter to Ground. It's the simplest way to switch a load on and off.
Ok..thanks for the reply.
That mean,the transistor is placed there just for switching purpose and not for amplification,as is written elsewhere.
So in that case if i don't want that switch,can i connect the line coming from the motor directly to the ground???
will that destroy my arduino??(that's the main reason i haven't tested it myself,till now)
Hope to get an answer,so that i can test it myself.
The transistor can be thought of as an amplifier because a small current in the Base controls a large current in the Collector.
Yes, you can connect your motor between +5V and Ground. It will run full speed without control. And then it wouldn't be an Arduino project.
thanks...thanks for clearing my confusion
johnwasser:
Yes, you can connect your motor between +5V and Ground. It will run full speed without control. And then it wouldn't be an Arduino project.
I just want to understand why those components are there.
