How r1 affect in this circuit

Discussion in 'General Electronics Chat' started by TAKYMOUNIR, Sep 27, 2012.

  1. TAKYMOUNIR

    Thread Starter Active Member

    Jun 23, 2008
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    This 3phase rectifier connected to 2 capacitors and we use r1 to make the center between 2 capacitor is very close to ground voltage =0 v so can someone help me to understand how this happen
     
  2. crutschow

    Expert

    Mar 14, 2008
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    The circuit makes little sense. What is it's purpose? :confused:
     
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  3. TAKYMOUNIR

    Thread Starter Active Member

    Jun 23, 2008
    351
    1
    is used as input for buck converter
     
  4. praondevou

    AAC Fanatic!

    Jul 9, 2011
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    If you want tomake sure that the voltage is equally divided you will need two resistors, one over each capacitor. How is the ground on R1 related to the rest of the circuit?
     
  5. crutschow

    Expert

    Mar 14, 2008
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    Well you can't get that from your posted circuit. ;)

    For a three phase bridge rectifier you only need 6 diodes (see the bottom of this page).
     
  6. ErnieM

    AAC Fanatic!

    Apr 24, 2011
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    I too caught the bridge isn't right... but it actually should work. OP has 12 diodes instead of the traditional 6, but the extra's are in parallel with the ones required so it is good.

    However, the ground on R1 is not referenced any where else, so the point is floating.

    I would guess you are attempting to get a positive and negative output from the 3 phase bridge: I do not believe you can do that.
     
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