Pulsed DC RLC circuit resonance

Discussion in 'Homework Help' started by electronice123, Dec 20, 2008.

  1. electronice123

    Thread Starter Senior Member

    Oct 10, 2008
    302
    0
    In a DC RLC circuit:

    Is there inductive and capacitive reactance in a pulsed DC RLC circuit?

    Can there be a lead or Lag of current in a pulsed DC RLC circuit?
    Please explain.

    Is it possible in a Pulsed DC RLC circuit to make the current lag so it never reaches the load? What would do this?
     
  2. beenthere

    Retired Moderator

    Apr 20, 2004
    15,815
    282
    1. Of course there is - the voltage is changing at a substantial rate when the pulse is applied and stopped.

    2. The same effects of capacitive and inductive reactance apply in the situation.

    3. Lagging by 90 deg does not mean it never gets there. Also -think of the very low impedance path through the capacitor.
     
  3. KL7AJ

    AAC Fanatic!

    Nov 4, 2008
    2,040
    287

    Indeed. And you can excite (R)LC circuits to "ring" at any harmonic of the pulse base frequency. (if the duty cycle is 50%, you can only get odd harmonics, but if it is anything else, you can also get even harmonics. And if it's a very very short pulse, you can get ALL harmonics.

    Eric
     
  4. electronice123

    Thread Starter Senior Member

    Oct 10, 2008
    302
    0
    Awesome,

    Thanks for the help!!!
     
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