TVS diode help!

Discussion in 'General Electronics Chat' started by Bunch_tjb, Dec 28, 2013.

  1. Bunch_tjb

    Thread Starter New Member

    Dec 28, 2013
    1
    0
    Does a TVS diode shut the voltage off completely when the voltage is over the amount it allows?
     
  2. crutschow

    Expert

    Mar 14, 2008
    12,974
    3,220
    No. It acts like a zener diode. It starts conducting when the voltage rises above its rated voltage. It does have some forward resistance when conducting so the voltage it reaches depends upon the amount of current it is conducting above the rated value.
     
  3. MikeML

    AAC Fanatic!

    Oct 2, 2009
    5,450
    1,066
    It is a shunt regulator. It relies on having some impedance between the power source and load so that the peak current creates a voltage drop across that upstream resistance.

    Read this TVS Application note
     
  4. sheldons

    Active Member

    Oct 26, 2011
    616
    101
Loading...