Would this circuit run on 12v?

If not what would i need to change?

Thanks

 

You have to tell us the voltage and current of motor and then decide to increase or decrease two 470Ω resistors, otherwise you may damage the motor or transistors.

 

Will probably be like this:

http://www.ebay.co.uk/itm/1pc-Rever...hash=item2374fe89f9:m:mf1m-V1F-Q8onZ2ir4_INPA

I have one lying around somewhere....

 

I can't find any messages about the current of motor of the linked page, now you have the 12V voltage , but you still need the current, if you can find the one you have maybe you can measure it.

 

ill have a look for it

 

Just to be clear, are the two LEDs acting as photodiodes?

ak

 

The original circuit that the current of motor is :
I_BC327BC337 = (6V - (0.7V + 0.2V + 0.7V))/470Ω
= (6V - 1.6V)/470Ω
= 4.4V//470Ω
= 9.36 mA

So the I_motor = 9.36 mA * 10 = 93.6 mA Imax

If you using the same current to calculate the 12V motor then the 470Ω will be increase to like this:
R = 12 V/9.36 mA
= 1.282 K
Maybe you can using 1.2K to try.

And the two 4.7K on the left side that you can increase to 10K to try.