I almost have all of the parts that I need for a tablefan. I am going to use this 12VDC-18VDC motor, which can operate with a AA battery. The stall current of the motor is 8.5A. I am using a LEDJUMP 12VDC 8.5A power supply, which is made for powering LEDS. I got the adapter, because it was made to deliver up at around 12V for lots of Power Hungary LEDS. When I connect this power supply to this motor, the supply just powers the motor for a few seconds then resets over and over again. If I create a spark in between the motor and supply, the motor will start running continuously. Could a Motor Speed Controller with a PWM fix this? Please tell me why this is happening or a possible solution to fix this. It does work with Batteries, all the way up to 2 9V in a series.
this 12VDC-18VDC motor
- what 12VDC-18VDC motor? I see no datasheet or link.
which can operate with a AA battery. The stall current of the motor is 8.5A
What? 8 amps from an AA battery??!!?
You haven't provided a datasheet or link to the power supply. Its probably tripping out on
over-current because its not designed for motors, and its not able to handle the stall current.
If I create a spark in between the motor and supply
Are you deliberately trying to damage your supply? It certainly sounds like it. Motors are
inductive loads and this sort of abuse usually trashes things pretty reliably.
But yes, PWM (ie a ramped start up) might well help prevent full stall current flowing and make
life easier on the supply. You must use a free-wheel diode to protect against inductive spikes.