Need a dual 12v Power supply circuit for a AMP plz help

Discussion in 'Homework Help' started by Asish PV, Feb 2, 2015.

  1. Asish PV

    Thread Starter New Member

    Feb 2, 2015
    5
    0
    I have a Transformer details mentioned below
    Voltage - 12.0.12
    Current - 5

    I want this circuit for power my amplifier .That amp board needs -ve, +ve, and ground.I'm so bothered about this connection , coz so many difference circuits are available in internet.But no results for 5 amps .

    so suggest me a good circuit diagram
    amp pic attached

    Thanks in advance
     
  2. MikeML

    AAC Fanatic!

    Oct 2, 2009
    5,450
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    Wire your rectifier like this. You need a bridge rated at ~10 to 25A. With a 24Vct transformer, the unloaded voltage at Vcc and Vee will be about +17Vdc and -17Vdc.

    ps.gif

    Capacitor values (ripple) depend on how much current your amp draws.

    Do you need "regulation" at 12.0V, or will your amp operate fine with some ripple and higher voltage on Vcc and Vee? Most Power amps do not require regulated supplies.

    BTW, if you came to a job interview looking like your avatar, I'd throw your ass out the door...
     
    Last edited: Feb 2, 2015
  3. Asish PV

    Thread Starter New Member

    Feb 2, 2015
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    lol..it's not me...this dp added for bblog in gravatar.com ...automatically added here by my mail....

    dude , i just connected with 2 diodes in a single capacitor for DC...unloaded voltage was 17. :)
    can you suggest me perfect capacitor measures ?
     
  4. Asish PV

    Thread Starter New Member

    Feb 2, 2015
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    i have two capacitors 35v & 2200 MF..is it usable ?
    and tell me the details of those 4 capacitors... don't angry me... I'm a noob in electronics... :(
     
  5. MrChips

    Moderator

    Oct 2, 2009
    12,449
    3,368
    2200μF might not be enough. Put two in parallel to make it 4400μF.

    You need four rectifiers to make a bridge circuit.
     
  6. Asish PV

    Thread Starter New Member

    Feb 2, 2015
    5
    0
    four rectifier means 4 diodes ? like that circuit ?
     
  7. MikeML

    AAC Fanatic!

    Oct 2, 2009
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    Bridge rectifier like this:

    [​IMG]
     
  8. Asish PV

    Thread Starter New Member

    Feb 2, 2015
    5
    0
    got -ve and +ve.... wanna buy rectifier soon...thx guys
     
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