Electronics - Basic Op-Amp Circuits - Discussion
Discussion Forum : Basic Op-Amp Circuits - General Questions (Q.No. 13)
13.
A two-pole high-pass active filter would have a roll-off rate of
Discussion:
19 comments Page 2 of 2.
Preeti vyas said:
1 decade ago
It should be +40db/decade because high pass only pass the high freq. Signal thus slope is in growing form so it is +40.
Adarsh said:
1 decade ago
It is definitely +40 db/decade because it has the positive slope as it starts to pass only after certain frequency.
Tarun said:
1 decade ago
A two-pole low-pass filter has a roll-off rate of 40 dB/decade.
The two RC, each of which introduces a 20 dB/decade rolloff for a total of 40 dB/decade.
f(c)=1/(2*3.14*(r1*r2*c1*c2)^.5)
The two RC, each of which introduces a 20 dB/decade rolloff for a total of 40 dB/decade.
f(c)=1/(2*3.14*(r1*r2*c1*c2)^.5)
Santosh said:
1 decade ago
It will be +40/decade.
Brij kishore sharma said:
1 decade ago
It will be +40db/dec for high filter.
Arun Yadav said:
1 decade ago
Ya it should be +40db/dec.
-40 is for low pass two pole filter.
-40 is for low pass two pole filter.
Samarth said:
1 decade ago
Exactly it is 40db/decade.
VATSALA SHARMA said:
1 decade ago
Ya it should be +40db in case of high pass filter
its -40db in case of low pass filter
its -40db in case of low pass filter
AVIJIT said:
1 decade ago
WHY NOT +40 Db/DEC?
IT SHULD BE..I THINK PLZ HELP
IT SHULD BE..I THINK PLZ HELP
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