I'm building a MOSFET controlled DC motor circuit with a 6V battery as the supply. Although when I turn the MOSFET on, the voltage at the battery positive drops to about 2.5V. I thought it could be back emf from the motor, but it stays at the lower voltage. Maybe it's the way I set up the circuit? Can anyone see what might be causing this problem?
Note: That the inductance in the schematic for the motor is made-up. And that I am using an IRLB8721 MOSFET, not the one in the schematic.
Thank you for helping.
Edit: The solution it seems that the batterys I'm using either cannot supply enough current or they are low on charge. Thanks!