I have a little hobby motor, a small one from radio shack. I want to make a variable speed control on it from very very slow to as fast as it will go.
I used a 10v/700ma output walwart for a device I have here at a home and a connector from radio shack so I could connect it to the motor.
In between one of the terminals I soldered a mini volume control pot #271-215 from radio shack to the #1 terminal and the middle terminal. The other terminal (3) I just left unused.
I plugged it in and it adjusted the speed as planned but within a few seconds the pot started smoking an emitted a bright light so i quickly unplugged the walwart.
The pot says Rated Power .05 watts. Switch rating 3amps at 30vdc. It is a 10k ohms with audio taper.
Question:
What am I doing wrong? I am trying to make a variable speed control on the motor from 0v to 2v. The motor is from an device that used two AA batteries for power.
Do I need a different power supply or a different pot?
Thanks for any help you can give me.
Timmy
I used a 10v/700ma output walwart for a device I have here at a home and a connector from radio shack so I could connect it to the motor.
In between one of the terminals I soldered a mini volume control pot #271-215 from radio shack to the #1 terminal and the middle terminal. The other terminal (3) I just left unused.
I plugged it in and it adjusted the speed as planned but within a few seconds the pot started smoking an emitted a bright light so i quickly unplugged the walwart.
The pot says Rated Power .05 watts. Switch rating 3amps at 30vdc. It is a 10k ohms with audio taper.
Question:
What am I doing wrong? I am trying to make a variable speed control on the motor from 0v to 2v. The motor is from an device that used two AA batteries for power.
Do I need a different power supply or a different pot?
Thanks for any help you can give me.
Timmy