Power supply design for 6volts and 20watts for halogen lamp

Discussion in 'Homework Help' started by subbusuccess, Jan 17, 2009.

  1. subbusuccess

    Thread Starter New Member

    Jan 17, 2009
    2
    0
    Please suggest me a circuit for a 6volts and 20watts power supply for a halogen lamp
     
  2. beenthere

    Retired Moderator

    Apr 20, 2004
    15,815
    282
    How about a transformer rated for enough current?
     
  3. subbusuccess

    Thread Starter New Member

    Jan 17, 2009
    2
    0
    Transformer should have 12-0-12, 5 amps
     
  4. bertus

    Administrator

    Apr 5, 2008
    15,647
    2,346
    Hello,

    The voltage your transformer is supplying is to high.
    You will have to make a regulation circuit to bring it back to the required 6 Volts.
    For 20 Watts the regulator must be able to handle 20 Watts / 6 Volts = 3.4 Ampere (rounded up).

    Greetings,
    Bertus
     
  5. jj_alukkas

    Well-Known Member

    Jan 8, 2009
    751
    5
    Run it off a 9-0-9 3A transformer... A 9-0-9 will give near to 14v and wont need a regulator... 12-0-12 will give 18v which can be regulated to 12
     
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