Voltage regulators for dummies question

Discussion in 'General Electronics Chat' started by ChrisChemist116, Feb 20, 2011.

  1. ChrisChemist116

    Thread Starter Active Member

    Mar 13, 2009
    78
    1
    Howdy,

    the question is quite simple. What's a floating regulator and how is it designed?.

    I'm looking for some basics.:rolleyes:
     
  2. SgtWookie

    Expert

    Jul 17, 2007
    22,182
    1,728
    Look here: http://www.k7mem.150m.com/Electronic_Notebook/power_supplies/lm317.html

    The maximum voltage difference that an LM317 "sees" is from it's ADJ terminal to its' IN terminal. It adjusts the current output in an attempt to keep Vref (the difference between the OUT terminal and ADJ terminal) at a nominal 1.25v.

    If you're wondering about "isolated" regulators, that's a different topic altogether.
     
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