abstract:A Wien filter is a device consisting of perpendicular electric and magnetic fields that can be used as a velocity filter for charged particles, for example in electron microscopes and spectrometers. It is named for Wilhelm Wien who developed it in 1898 for the study of anode rays.
The wienbridgetrapfilterand itsapplicationin the distortionmeasurement are introduced, the kind ofintelligentnumerical controltuningwien bridge trap filtercircuit is proposed.