Electronics and Communication Engineering - Analog Electronics - Discussion
Discussion Forum : Analog Electronics - Section 1 (Q.No. 45)
45.
Study the circuit of figure and examine the following statements
- It is an active low pass finer.
- It is a second order filter.
- The change in gain is 40 dB/decade.
Answer: Option
Explanation:
The circuit is a second order active low pass filter for which gain is 40 dB/decade.
Discussion:
11 comments Page 1 of 2.
Pavithra said:
8 years ago
1) It is an active filter since opamp is used. In this resistor and then capacitor used, so we conclude that which is low pass filter.
2) It is second order since two combinations of resistor and capacitor used.
3) For first order filter gain is 20db produced by one pair of resistor and capacitor.
For second order filter gain is 40 db produced by two pair of resistor and capacitor.
2) It is second order since two combinations of resistor and capacitor used.
3) For first order filter gain is 20db produced by one pair of resistor and capacitor.
For second order filter gain is 40 db produced by two pair of resistor and capacitor.
(4)
Igor said:
9 years ago
This is a Sallen-Key second order low pass filter with gain.
HALKUDE VAISHNAVI said:
4 years ago
Thank you for explaining the answer @Pavithra.
Princess said:
1 decade ago
Someone please help. Could not get it?
Sandeep said:
8 years ago
Thanks for the explanation @Pavithra.
Karthik said:
8 years ago
Thank you for explaining it.
Jsree said:
7 years ago
Thanks alot @Pavithra.
Ramesh said:
8 years ago
Thank you @Pavithra.
Wolly said:
6 years ago
Thank you @Pavithra.
Row said:
6 years ago
Thanks @Pavithra.
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