no voltage change as current changes.

Discussion in 'General Electronics Chat' started by mazur50, Feb 7, 2007.

  1. mazur50

    Thread Starter Member

    Feb 5, 2007
    How can i control the voltage on my power supply so that the voltage does not change as the current or load changes.

    Here is a example.
    I have my power supply and i am breaking in a small electric motor.
    when i start it draws 4 amps but as it breaks in it drops to 2.5 or even 2 amps. how can i control the voltage so it does not change as the current/load changes.

    for the help
  2. beenthere

    Retired Moderator

    Apr 20, 2004

    A load takes as much power as it needs. If you have a "stiff" supply - meaning that the power supply can handle the current needs of the load - thenthe supply voltage will not change as the motor draw goes from 4 amps down to 2.

    Just make sure the power supply is regulated, and is rated for more than 4 amps.