# Impedance of R, C and L in parallel Calculator

## Calculates the impedance of the resistor, capacitor and inductor in parallel.

 Resistor R GΩ MΩ kΩ Ω mΩ μΩ Capacitor C F mF μF nF pF fF Inductor L H mH μH nH Frequency f GHz MHz kHz Hz 6digit10digit14digit18digit22digit26digit30digit34digit38digit42digit46digit50digit Impedance |Z| kΩ = Ω = mΩ Phase φ degree
 $\normal \vspace{5}\\\hspace{30}{\large\frac{1}{Z}}={\large\frac{1}{R}}+j\omega C+{\large\frac{1}{j\omega L}},\hspace{10}\omega=2\pi f \\\vspace{5}\hspace{30}|Z|={\large\frac{1}{sqrt{{\large\frac{1}{R^2}}+\left({\large\frac{1}{\omega L}}-\omega C\right)^2}}}\\\\Phase\ difference\\\hspace{30}\phi=\tan^{\tiny -1}{\left({R(\large\frac{1}{\omega L} - \omega C})\right)}$

Impedance of R, C and L in parallel
 [1-10] /24 Disp-Num5103050100200
[1]  2018/10/30 23:33   Male / 50 years old level / An engineer / Very /
Purpose of use
check filter designs. this is very helpful
[2]  2017/09/21 01:04   Male / 30 years old level / High-school/ University/ Grad student / Very /
Purpose of use
Homework.
Comment/Request
God knows how all those formulas work but I had to find the impedance of a circuit with 18 ohms resistance, 100mH of inductance and a 50Hz supply. Shame there''s no field for power supply, if that makes any difference? 110V I was looking for.
[3]  2017/09/12 18:57   Male / 60 years old level or over / An engineer / Very /
Purpose of use
Check my own calculations
[4]  2017/06/30 01:15   Male / 60 years old level or over / Others / Very /
Purpose of use
education/job
Comment/Request
For modulation ciruits, using a paralle circuit, with frequency of 600kHz, a capacitance of .000352uF, inductance of 200uF and resistor of 10.5 ohms. What is the effective resistance, calculated value of reactance, the Q, and bandwidth?
[5]  2015/10/22 05:25   Male / 50 years old level / High-school/ University/ Grad student / Very /
Purpose of use
Hobby
Comment/Request
The phase angle should be:

Theta = tan-1[R(1/WL - WC)]

Your formula would yield reverse sign of the angle.
from Keisan
We have corrected the formula.
[6]  2015/04/08 19:07   Male / 20 years old level / An engineer / Useful /
Purpose of use
To check my final result
Comment/Request
Displaying the calculus would be more helpful
[7]  2015/03/26 07:38   Male / 60 years old level or over / A retired people / Very /
Purpose of use
CALCULATING IMPEDANCE OF HOME MADE INDUCTOR.
[8]  2015/02/10 03:43   Female / Under 20 years old / High-school/ University/ Grad student / A little /
Purpose of use
to know if my computation was correct but
Comment/Request
our professor gave us a different formula in impedance of RLC parallel

(R)(XL)(XC)
z = ___________________________________

√(XL^2) (XC^2) + (R^2) (XL-XC)^2

( i dont know how to get the right answer, why in electronics doesn't have a formula for checking the computation like in algebra or trigo?)
[9]  2015/02/03 09:37   Male / 50 years old level / An engineer / Very /
Purpose of use
Quick calculator
[10]  2015/01/30 09:10   Male / 60 years old level or over / A retired people / Very /
Purpose of use
Impedance calculation for LC antenna traps.

Sending completion

To improve this 'Impedance of R, C and L in parallel Calculator', please fill in questionnaire.
Male or Female ?
Age

Occupation

Useful?

Purpose of use?