View Full Version : stepper power efficiency

02-07-2008, 11:19 PM
hi i made a stepper motor driver using uln2001....i was successful in running the motor but the batter dont last for more than 2 minutes...i used 9v duracell battery...can any one tell how to improve battery life.....it starts discharging the moment i connect it to the circuit..

02-08-2008, 01:07 AM
Before you do anything , you need to know what to do.

1. Have you bothered to check the specifications of the stepper motor?
2. Do you know the characteristics of a 9V. battery??
3. Can you justify your act of connecting a 9v battery to a stepper motor?

02-08-2008, 10:44 PM
what is coil resistance ? if low or if u r applying load on stepper motor 9 v battery wont help (well mostly it wont help) try to use 12v 1 Amp supply (Also depends on your motor ratings) you can also post stepper motor photo-graph if u dont have its part no. or specification we can help you to identify and suggest proper power supply :)