dicharging capacitor through resistor

Discussion in 'General Electronics Chat' started by aimaldaudkhan, Jul 29, 2013.

  1. aimaldaudkhan

    Thread Starter Member

    Jan 25, 2013
    38
    0
    hello all i want to know that how to discharge capacitor through resistor what is the formula that i use to discharge a capacitor
     
  2. Shagas

    Active Member

    May 13, 2013
    802
    74
    http://www.electronics-tutorials.ws/rc/rc_1.html

    AAC (this forum) also has tutorials on this stuff .
    And if you are looking for a practical answer .... You just connect any capacitor thorough a 100ohm resistor and it will discharge safely
     
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  3. crutschow

    Expert

    Mar 14, 2008
    13,000
    3,229
    The value of resistor determines how fast the capacitor discharges. The RC time-constant (R x C) is the time it takes to discharge to about 37% of its previous value. In 5 time-constants it will discharge to less than 1% of the previous value.
     
  4. Ron H

    AAC Fanatic!

    Apr 14, 2005
    7,050
    657
    That link only seems to have the charge equation. Here's the discharge equation:

     v=v_{init} (e^{\frac{-t}{RC}})
     
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  5. #12

    Expert

    Nov 30, 2010
    16,261
    6,770
  6. aimaldaudkhan

    Thread Starter Member

    Jan 25, 2013
    38
    0
    thanks guys really appropriate u all <3
     
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