3 to 5V processor pin to drive a 12 V dc motor

[ng wei]

could somebody please help figure out what is the specification of the isolator to use ??? (its a systems design project problem and i am running out of time.....)

Added after 41 seconds:

please include the code of the ic to use.....

Added after 5 minutes:

the circuit diagram is as shown below but please just ignore the values

 

[ng wei]

just IGNORE the values and tell me the specification for a 3 to 5V processor pin to drive a 12 V dc motor.............. somebody please help me.....

Added after 1 minutes:

for the darlington transistors it should be TIP102 and TIP107 not ECG 264 and FCG 263.....

Added after 1 minutes:

i am asking these question because of the weaknesses of the circuit maker 2000 software...it has no specification imposed on the circuit.... that's too bad...

Added after 3 minutes:

i surfed the internet for so many types of isolator specification to fit this circuit that is (3 to 5V processor pin to drive a 12 V dc motor using optoisolators and half h bridge) but to no avail.......... somebody ....ANYBODY please HELP ME..........

Added after 2 minutes:

yes, i know that the circuit simulation works but what about the PRACTICAL HANDS ON DESIGN ............. is it IMPLEMENTABLE????

Added after 10 minutes:

the optoisolator used is without base connection............

 

[IanP]

As optoisolators you can use an available units - with, or without base pin ..
For example: 4N25, 4N36, CNY17, H11A1 and so on ..

I assume that if motor has to be supplied of 12V, V45+12V and V46=0V ..
Next, Q1 as it is drawn in reversed configuration - it is PNP transistor and its emitter should be connected to +12V ..
But, you don't need it at all ..
Just connect one side of the motor to +12V and use only Q2 (NPN) connected between motor and 0V ..
And the last thing, if you use only Q2 as motor driver, you even don't need optocoupler - the base of Q2 can be directly driven from a microcontroller's pin (optional pullup resistor) .. That's it ..
**broken link removed**

Regards,
IanP