SCR based rectifier regulator for Battery Charging

Discussion in 'The Projects Forum' started by alexuma, Jun 25, 2008.

  1. alexuma

    Thread Starter Member

    Jun 24, 2008
    11
    0
    Thanks a lot for replying.

    Any schematic is available with anyone for Rectifier-Regulator circuit ?

    I was even trying to simulate using SCRs as rectifiers and then just a zener diode for regulation but it seems it may NOT work as SCR may heat up to dead !

    Any suggestions ?
     
  2. alexuma

    Thread Starter Member

    Jun 24, 2008
    11
    0
    No reply from Any1 ?
     
  3. thingmaker3

    Retired Moderator

    May 16, 2005
    5,072
    6
    Greetings! And welcome to AAC!

    The Projects Collection (as opposed to The Projects Forum) is for sharing completed projects. I've moved your post into The Projects Forum, where it will draw more responses.

    Good luck with your project!
     
  4. beenthere

    Retired Moderator

    Apr 20, 2004
    15,815
    282
    What kind and capacity of battery are you trying to develop a charger for?
     
  5. alexuma

    Thread Starter Member

    Jun 24, 2008
    11
    0
    I am trying to develop a circuit which can charge 12 V lead-acid battery automatically from Car/engine's ALTERNATOR.

    I have simulated 2-3 designs but still not satisfied with it !
    Can we use 1N1001 diodes for rectification part ?

    Well, any response or idea will be highly appreciated.

    Thanks,
    Alex
     
  6. beenthere

    Retired Moderator

    Apr 20, 2004
    15,815
    282
    1N4001's are good for the voltages, but not the currents. Something more like a 1N1206. Choose the diode based on the total current drawn.
     
  7. SgtWookie

    Expert

    Jul 17, 2007
    22,182
    1,728
    Gee, most alternators have built-in 3-phase full-wave rectifier bridges and regulators nowadays. You really don't have to design an external circuit - just connect it up and spin the alternator.

    There's a catch though - the battery can't be completely dead. There needs to be enough current left in the battery to energize the rotor winding.

    If you're going to use discrete rectifiers, you're going to have to figure out how to keep them cool. There will be a good bit of current passing through them.
     
  8. Externet

    AAC Fanatic!

    Nov 29, 2005
    760
    57
    Hi Alex
    Connect the lead acid battery + with a 12V car lamp (21W backup?) in series to the car battery +.
     
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