Driving Motor With Two Transistor

[Transistorman]

hi all

i have just designing my new project

Which can be reduce a the quantity of Transistor in driving motor

is it ok to use this circuit in driving motor with PIC

because im only using small motor ?

**broken link removed**

 

[crutschow]

Unless the motor operates on a <20 mA of current (unlikely) then you will need the transistors to boost the current.

And Transistorman, you need a little better understanding of transistors. In your connection the base-emitter junctions are shorting the outputs to ground, since there are no base resistors (and what is the purpose of those transistors anyway?).

 

[Transistorman]

Unless the motor operates on a <20 mA of current (unlikely) then you will need the transistors to boost the current.

And Transistorman, you need a little better understanding of transistors. In your connection the base-emitter junctions are shorting the outputs to ground, since there are no base resistors (and what is the purpose of those transistors anyway?).

thanks

for your correction

i will put some diode to prevent PIC from shorting

 

[Reloadron]

OK, let's try something. Pin 6 of the PIC is High and Pin 7 is low. From there tell us in theory exactly what is happening? The transistors aren't doing anything that I can see.

Ron

 

[audioguru]

The base-emitter diode of the transistor that is turned on is shorting the output of the PIC to only +0.7V.
Therefore the PIC will burn out and the motor does not get enough voltage to run.