Contents

Analog Electronics
Semiconductor Physics
Diodes & Applications
BJT Amplifiers
FET Amplifiers
Operational Amplifiers
Oscillators & Timers
Filters
Power Electronics Basics
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6 of 10 articles

Active Band Stop Filter

Notch filter, twin-T design, rejection bandwidth.

Darshan N
Updated: 19 March 2026
10 min read

Active Band Stop

Test your understanding of notch filter design and rejection characteristics.

Question 1 of 3

Q1.In a twin-T notch filter, the notch frequency f0 is given by which expression, assuming all resistors are R and capacitors are C?