Connect with us

Load Balancing.

Discussion in 'General Electronics Discussion' started by cjdelphi, Feb 20, 2015.

Scroll to continue with content
  1. cjdelphi

    cjdelphi

    1,166
    109
    Oct 26, 2011
    lately I've been thinking of wiring up several regulators so I've been searching for circuits..

    using this attached circuit, what keeps 1 regulator from working harder than the other?

    is it a result of the 2 diodes and their vf drop? or is it due to the large capacitor(s)?

    I'm just not sure how the diode/cap solves the load balancing problem... ?
     

    Attached Files:

  2. BobK

    BobK

    7,682
    1,689
    Jan 5, 2010
    That circuit pretty much guarantees unequal sharing. The regulator with the higher voltage will supply most of the current.

    Bob
     
  3. BobK

    BobK

    7,682
    1,689
    Jan 5, 2010
    Here is the proof. V1 is fixed at 10V, V2 is varied from 9.9 to 10.1V. Notice that at 100mV difference, about 80% of the current is supplied by the higher voltage supply.

    Capture.JPG
     
  4. cjdelphi

    cjdelphi

    1,166
    109
    Oct 26, 2011
    I agree ... but that does not explain the 15,000uf (as indicated by the circuit)

    maybe that was a circuit NOT to use? :)
     
Ask a Question
Want to reply to this thread or ask your own question?
You'll need to choose a username for the site, which only take a couple of moments (here). After that, you can post your question and our members will help you out.
Electronics Point Logo
Continue to site
Quote of the day

-