Quick power supply question

Discussion in 'The Projects Forum' started by PlayaSlaya, Mar 24, 2010.

  1. PlayaSlaya

    Thread Starter Member

    Jun 22, 2009
    16
    0
    Hi, heres a power supply i designed to deliver 5V and 3.3V. Can anyone tell me if it will work.

    Any help is much appreciated. Thanks
     
  2. PlayaSlaya

    Thread Starter Member

    Jun 22, 2009
    16
    0
    Sorry, i forgot to attach the circuit digram.
     
  3. SgtWookie

    Expert

    Jul 17, 2007
    22,182
    1,728
    Change R1 to 120 Ohms. Change R2 to 200 Ohms.

    For more stability, connect a 10nF cap between the junction of R1/R2 and ground.

    You need larger filter caps after the rectifier bridge. 2,200uF would be OK for up to around 500mA.

    Don't forget to use heat sinks.
     
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