Bridged Tunable Notch Passive Filtes

Description

SPICE simulation of a four bridged tunable filters with a precise ratio of their components. With this ratio the notch frequency is Fnotch= 1/[6.28*C*R* SQRT( 3*x*(1-x))], where x that ranges between 0 and 1, can be considered the position of a potentiometer.

• Project Type: Free
• Complexity: Simple
• Components number: 21-30
• SPICE software: LTspice
• Software version: IV
• Full software version nedeed : No
• Screenshots simulation images: