Capacitive Reactance



Xc = 1 / (2 * pi * f * C)
This is similar to the inductor, with C in farads and f in hertz. The capacitive reactance will be in ohms.



Calculate Capacitive Reactance


Frequency in Hz:
Capacity :
Capacitive Reactance =  






Calculate required Capacitor for producing a Capacitive Reactance


Frequency :  Hz       kHz       MHz
Capacitive reactance :  Ohms  kOhms  MOhms
Value of capacitance =  uF






Calculate Total Impedance of a Parallel RC circuit


Frequency:  Hz       kHz       MHz
Capacity:  F         uF         nF         pF
Resistant:  Ohms  kOhms  MOhms
capacitive reactance Xc =  Ohms
Total impedance Z =  Ohms






Calculate total Impedance of a Series RC circuit


Frequency:  Hz  kHz  MHz
Capacity: F  uF  nF  pF
Resistant:  Ohms  kOhms  MOhms
capacitive reactance Xc =  Ohms
Total impedance Z =  Ohms






Calculate required Inductance & Capacitance


Desired frequency:  Hz     kHz         MHz 
Desired reactance:  Ohms
Required inductance, L:  H
Required inductance, L:  mH
Required inductance, L:  nH
Required capacitance, C:  µf
Required capacitance, C:  nf
Required capacitance, C:  pf






Calculate the Resonant Frequency
of Capacitor and Inductor (serial or parallel)


Inductor :  H   mH   nH 
Capacitor:  F   uF   nF   pF 
Fres  Hz  
Fres  kHz  
Fres  MHz  








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