Any different between power supply and battery charger?

Discussion in 'General Electronics Chat' started by wkyong, May 9, 2008.

  1. wkyong

    Thread Starter Active Member

    Apr 29, 2008
    Any different between power supply and battery charger? Thanks!
  2. studiot

    AAC Fanatic!

    Nov 9, 2007
    That depends upon the battery charger and the 'power supply' in question.

    Power supplies can be AC or DC, with varying degrees of stabilisation.

    Battery chargers may include sensing and control circuitry for use in conjunction with circuitry in the battery, or just battery state sensing.
    Or they may simply be rectified AC, with no ripple smoothing at all.
    Last edited: May 9, 2008
  3. thingmaker3

    Retired Moderator

    May 16, 2005
    A "power supply" is just that - it supplies power to some circuit. For example, the battery charger has a power supply in it. The battery charger is a power supply for the battery. The battery is a power supply for something else. I've even used old battery chargers as power supplies for electrochemical etching and electroplating.
  4. SgtWookie


    Jul 17, 2007
    A long time ago, I used a lead-acid battery charger as a power supply by adding a LARGE electrolytic capacitor on the output to power a radio for a short time.

    It worked, but I soon replaced that setup with a dedicated 13v power supply.