RECTIFIER OUTPUT

• Shunt capacitor filter • Chock input (LC) filter • Pi(π) filter or CLC filter or capacitor input

filter

Many types of passive filters are in use

TYPES

CAPACITOR FILTER

XC = 1/2πfC

If frequency = 0 XC becomes ἀ

ADVANTAGES

• Low cost • Small size and weight • Good characteristics • Can be connected for both HW and FW

rectifiers • Improved d.c output

Capacitor draws more current

DISADVANTAGE

CHOKE INPUT FILTER

XL = 2πfL

If frequency = 0XL becomes 0

OUTPUT

ADVANTAGES

• Reduced ripples at the output • Action is independent of load current

DISADVANTAGE

• Low output voltage • Bulky and large in size • Not suit to connect with HWR

π - FILTER OR CLC FILTER

XC = 1/2πfC

If frequency = 0 XC becomes ἀ XL = 2πfL

If frequency = 0XL becomes 0

ADVANTAGES

• More output voltage• Ripple less output• Suitable to be used with both HWR and FWR

DISADVANTAGE

• Large in size and weight • High cost

• Contact: 01672-462007• Country : Bangladesh

• Email: aliv_jauad@yahoo.com