Bridge rectifier overheating (moved)

Discussion in 'General Electronics Chat' started by oinkieporks, Jan 17, 2016.

  1. oinkieporks

    Thread Starter New Member

    Jul 12, 2014
    14
    0
    hi same here i'm working on with my power supply giving a 5v output. the transformer that I used was 220v primary 12v-0-12v 3a, the rectifier I used was 1n5408 then the capacitors after the rectifier were 1000uF and 0.33 uF after that 7805 (though it can only carry 1a I give it a try) then 0.1uF. what went wrong? though when I tested it 7805 didn't heat up but later on I noticed that the rectifier heats up and I saw smoke. Good thing nothing blows up.
     
  2. bertus

    Administrator

    Apr 5, 2008
    15,646
    2,344
    Hello,

    You just hyjacked an exixting thread:
    Bridge rectifier overheating

    Now you have a thread of your own.

    If you want help, post a schematic and a picture of the setup.

    Bertus
     
  3. dl324

    Distinguished Member

    Mar 30, 2015
    3,235
    619
    Post a schematic and indicate which diode smoked.
     
  4. oinkieporks

    Thread Starter New Member

    Jul 12, 2014
    14
    0
    here is the schematic of my power supply

    upload_2016-1-18_13-20-9.png
     
  5. oinkieporks

    Thread Starter New Member

    Jul 12, 2014
    14
    0
    the diode that smoked was the 1st one. here is the actual photo of my connections

    [​IMG]
     
  6. dl324

    Distinguished Member

    Mar 30, 2015
    3,235
    619
    Don't see anything wrong with the schematic, or what I can make out from the breadboard (except the small caps should be ceramic).

    Your breadboard doesn't have the transformer connections.
     
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