Filter circuit

1. RECTIFIER OUTPUT
TYPES
 Many types of passive filters are in use
• Shunt capacitor filter
• Chock input (LC) filter
• Pi(π) filter or CLC filter or capacitor input filter

2. CAPACITOR FILTER
XC = 1/2πfC
If frequency = 0
XC becomes ἀ

3. ADVANTAGES
DISADVANTAGE
• Low cost
 Capacitor draws more
current size and weight
• Small
• Good characteristics
• Can be connected for both HW and FW
rectifiers
• Improved d.c output

4. CHOKE INPUT FILTER
XL = 2πfL
If frequency = 0
XL becomes 0

5. OUTPUT

6. ADVANTAGES
DISADVANTAGE
••
••
•
Low output voltage the output
Reduced ripples at
Bulky andindependent of load current
Action is large in size
Not suit to connect with HWR

7. π - FILTER OR CLC FILTER
 XC = 1/2πfC
If frequency = 0
XC becomes ἀ
 XL = 2πfL
If frequency = 0
XL becomes 0

8. ADVANTAGES
DISADVANTAGE
•
•
Large in size andvoltage
• More output weight
High cost less output
• Ripple
• Suitable to be used with both HWR and FWR

9. • Contact: 01672-462007
• Country : Bangladesh
• Email: aliv_jauad@yahoo.com