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)
Princess said:
1 decade ago
Someone please help. Could not get it?
Igor said:
9 years ago
This is a Sallen-Key second order low pass filter with gain.
Swati said:
8 years ago
Thank @Pavithra.
Ramesh said:
8 years ago
Thank you @Pavithra.
Karthik said:
8 years ago
Thank you for explaining it.
Sandeep said:
8 years ago
Thanks for the explanation @Pavithra.
Jsree said:
7 years ago
Thanks alot @Pavithra.
Row said:
6 years ago
Thanks @Pavithra.
Wolly said:
6 years ago
Thank you @Pavithra.
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