Bridge Rectifier not giving same output as input

Discussion in 'General Electronics Chat' started by BluePhantom, Dec 21, 2015.

  1. BluePhantom

    Thread Starter New Member

    Nov 16, 2015
    20
    1
    I have connected a bridge rectifier (KBPC5010 - www.danomsk.ru/pdf/159613.pdf) to an AC source of 25v 40Amp
    and a filter capacitor rated 70V 4700uF in parallel with DC output.
    but the DC output when measured with a voltmeter is only 4v whereas the input AC voltage is 25v.
    I cant figure it out
     
    RRITESH KAKKAR likes this.
  2. Papabravo

    Expert

    Feb 24, 2006
    10,140
    1,789
    You might have the meter on the wrong setting for measuring AC Voltage. It is an easy mistake to make.
     
    RRITESH KAKKAR likes this.
  3. BluePhantom

    Thread Starter New Member

    Nov 16, 2015
    20
    1
    Nope
    AC setting was 200VAC
    DC setting was 200VDC
     
  4. spinnaker

    AAC Fanatic!

    Oct 29, 2009
    4,884
    1,001
    Post your schematic
     
  5. R!f@@

    AAC Fanatic!

    Apr 2, 2009
    8,750
    760
    Bad bridge.
    Capacitor connected reverse.
    Meter bad.
     
  6. spinnaker

    AAC Fanatic!

    Oct 29, 2009
    4,884
    1,001
    Bridge connected wrong.
     
  7. R!f@@

    AAC Fanatic!

    Apr 2, 2009
    8,750
    760
    that too.
     
    edbog likes this.
  8. Papabravo

    Expert

    Feb 24, 2006
    10,140
    1,789
    What kind of meter has settings for both AC and DC simultaneously? It should be one or the other. What kind of meter is it?
     
  9. BluePhantom

    Thread Starter New Member

    Nov 16, 2015
    20
    1
    circuit diagram-
    [​IMG]

    And my multimeter is allright
     
  10. R!f@@

    AAC Fanatic!

    Apr 2, 2009
    8,750
    760
    Check your bridge.
     
  11. spinnaker

    AAC Fanatic!

    Oct 29, 2009
    4,884
    1,001
    I would verify it is hooked up correctly and your bridge is working.
     
  12. BluePhantom

    Thread Starter New Member

    Nov 16, 2015
    20
    1
    ok ill get another bridge and will check it out..
     
  13. dl324

    Distinguished Member

    Mar 30, 2015
    3,242
    619
    If your DVM has a diode check function, you can check the one you have.
     
    PeterCoxSmith likes this.
  14. panic mode

    Senior Member

    Oct 10, 2011
    1,320
    304
    also check if your AC source is low impedance (tripped breaker for example?). maybe what you measure is just leakage current.
     
Loading...