The filter capacitor can be calculated as function of the filter inductance, the AC frequency and the filter coefficient. The next formula is used to make these calculations:

 


 

 

 

Formula 1

Filter capacitance:

 

Where:

C is the filter capacitance in farads (F)

α is the filter coefficient

ω = 2 x π x f where f is the AC frequency in hertz (Hz)

L is the coil inductance in henry (H)

 

Derivated formula

 

Formula 2

Filter capacitance II:

 

Where all the quantities are as in the previous formula except η:

η is the filter efficience

 

 

 

Datasheets


N° of component