I simply want to connect 2 motors as i show in the image, using a 12VDC power source and 2 #L7809CV, right now the circuit is this you can see in the image i made. The GND its the same source for every wire connected to.
What happens: When motor number 1 absorb power, motor 2 absorb the same power at the same time, and viceversa, if number 2 is on, number 1 power up too.
What i'm looking to do: When motor 1 is absorbing power, motor 2 still off, and viceversa, if number 2 is On then number 1 still off, and the motors have to be powered on both, or turned off both.
Sorry my english, i think this its not hard to do so i post the image that can talk more than my english. I guess :)
Here is an other image:
As you can see there are 2 pcb who command the input and output for each motor, those pcbs are powered on by a different 3,3v line but use the same GND of other components.
Its important to let there only one 12v source line for both L7809.