RLC circuits in parallel

Discussion in 'Homework Help' started by chris_p, Jun 15, 2009.

  1. chris_p

    Thread Starter New Member

    Jun 15, 2009
    hi there, i'm desperately stuck on the last part of this assignment and i've been tearing my hair out trying to get it down.

    i have a circuit consisting of a resistor and inductor in series, and a capacitor in parallel. i've worked out the current and phase angle in the individual branches but i'm stuck on how to get i and θ for the whole circuit. do i use the reciprocal formula similar to parallel resistors? i didn't understand the explanation in the main textbook on here because i havn't studied complex numbers before and it seemed to use them quite a lot.

    any help is appreciated, ta
  2. mik3

    Senior Member

    Feb 4, 2008
    Yes, if you know the source frequency you can find the impedance of the inductor and capacitor. Then add the resistor and the inductor impedance and parallel the sum with the capacitor impedance.