LearnPick Navigation
Close

T-Notch Filter

Published in: Physics
542 views
  • Rahul A

    • Delhi
    • Fresher
    • Qualification: M.Sc
    • Teaches: Physics, Mathematics, IIT JEE Mains, IIT JEE Advan...
  • Contact this tutor

Here,in this ppt some details about Filter And T-Notch Filter are discussed.

  • 1
    WHAT IS A FILTER CIRCUIT? ELECTRONIC FILTER CIRCUITS ARE THOSE O WHICH PERFORM SIGNAL PROCESSING FUNCTIONS ESPECIALLY TO ELIMINATE UNWANTED SIGNAL,TO ENHANCE WANTED SIGNAL OR BOTH. IN FILTER CIRCUITS WE WILL UNDERSTAND MAINLY ABOUT ACTIVE FILTERS AND PASSIVE FILTERS.
  • 2
    DISTINGUISH BETWEEN ACTIVE AND PASSIVE COMPONENTS ACTIVE COMPONENTS THEY REQUIRE AN EXTERNAL POWER SUPPLY TO OPERATE. THEY HAVE A FUNCTION OF GAIN. THEY PRODUCE ENERGY IN THE FORM OF VOLTAGE OR CURRENT. EXAMPLE:SEMICONDUCT OR,DIODES AND TRANSISTORS. PASSIVE COMPONENTS THEY DO NOT REQUIRE AN EXTERNAL POWER SUPPLY TO OPERATE. THEY HAVE NO FUNCTION OF GAIN. THEY STORE ENERGY IN THE FORM OF VOLTAGE OR CURRENT. C-ITOR AND INDUCTORS.
  • 3
    ACTIVE FILTERS AN ACTIVE FILTER IS A TYPE OF CIRCUIT THAT USES ACTIVE COMPONENTS SUCH AS AN AMPLIFIER. AMPLIFIERS IN A FILTER CAN BE USED TO IMPROVE THE PERFORMANCE OF THE FILTER AND HEREBY AVOIDING THE USE OF INDUCTOR. AN AMPLIFIER PREVENTS THE LOAD IMPEDANCE FROM AFFECTING THE CHARACTERISTICS OF FILTER. THE SHAPE OF THE RESPONSE ,QUALITY FACTOR CAN BE SET USING INEXPENSIVE VARIABLE RESISTORS. Ill 220 220 10 out 10 kQ
  • 4
    DISADVANTAGES OF ACTIVE FILTER AVAILABLE ACTIVE DEVICES HAVE LIMITED O BANDWIDTH SO THEY ARE IMPRACTICAL AT HIGH FREQUENCIES. AMPLIFIERS CONSUME POWER AND INJECT O NOISE IN THE SYSTEM.
  • 5
    PASSIVE FILTERS A PASSIVE FILTER IS MADE UP OF ONLY PASSIVE COMPONENTS IN CONTRAST To AN ACTIVE FILTER. IT DOES NOT REQUIRE AN EXTERNAL POWER SOURCE. V, Ill out
  • 6
    BAND STOP FILTER IN BAND STOP FILTER IT PASSES MOST FREQUENCIES UNALTERED BUT ATTENUATES THOSE IN SPECIFIC RANGE TO VERY LOW LEVELS. ATTENUATES MEANS GRADUAL LOSS OF INTENSITY.
  • 7
    T NOTCH FILTER 0 IN T NOTCH FILTER IT PROVIDES LARGE DEGREE OF ATTENUATION AT A PARTICULAR FREQUENCY. AS THE SIGNAL MOVES TOWARDS THE NOTCH O FREQUENCY IT ATTENUATES GIVING AN IDEAL NOTCH RESPONSE. IDEALLY THE T NOTCH GIVES INFINTE ATTENUATION.
  • 8
    PIN DIAGRAM OF TL082 Dual-in-Line Package OUTPUT A INVERTING INPUT A NON-INVERTING INPUT A 1 2 3 4 8 7 6 OUTPUT B INVERTING INPUT B NONANVERTING INPUT B TOP VIEW
  • 9
    T NOTCH FILTER RI THE TWIN T NOTCH FILTER IS MADE UP OF TWO T SECTIONS ONE IS LOW PASS AND OTHER IS HIGH PASS. THE LOW PASS AND HIGH PASS ARE DESIGNED IN SUCH A WAY THAT THEY DON'T OVERLAP EACH OTHER AND THEY ALOW FREQUENCIES ABOVE AND BELOW THE NOTCH 04 FREQUENCY BUT N OT THE NOTCH FREQUENCY. THE UPPER PART IS THE LOW PASS CIRCUIT. THE LOWER PART IS HIGH PASS CIRCUIT. THE SIGNAL PRODUCED BY THE HIGH PASS AND LOW PASS FILTER ARE 180" OUT o 3 1 2 5 04 mw.elecpolcom
  • 10
    GRAPHICAL RESPONSE THE FOLLOWING GRAPH IS A GRAPH FOR T NOTCH FILTER. THE GRAPH FOLLOWS A NATURE WHEN LOWER FREQUENCIES ARE PASSED,HIGHER FREQUENCIES ARE PASSED BUT NOT AT NOTCH FREQUENCY. Vout Gain = Vin ass Odd -3dB Phase an top an Bandwidth Frequency Response ass a Phase Shift Frequency (Ft) Logarithmic Scale) Frequency
  • 11
    Q FACTOR IT ISA DIMENSIONLESS QUANTITY. IT IS THE RATIO OF MID FREQUENCY TO THAT OF BANDWIDTH. IT GIVES AMOUNT OF ENERGY STORED IN SYSTEM. HIGHER THE Q o Increasing Q Tuned circuit responses Frequency
  • 12
    APPLICATIONS OF NOTCH FILTER PUBLIC ADDRESS SYSTEM O PREVENTING AUDIO FEEDBACK O

Discussion

Copyright Infringement: All the contents displayed here are being uploaded by our members. If an user uploaded your copyrighted material to LearnPick without your permission, please submit a Takedown Request for removal.

Need a Tutor or Coaching Class?

Post an enquiry and get instant responses from qualified and experienced tutors.

Post Requirement

Related PPTs

Query submitted.

Thank you!

Drop Us a Query:

Drop Us a Query