EMI Filter Design, 2nd ed.

Richard Lee (OZ) Ozenbaugh

 

Describes the selection of cores, capacitors, mechanical shapes, and styles for the timeliest design, construction, and testing of filters-analyzing matrices of various filter types based on close approximations, observation, and trial and error. Offers simple methods of measuring AC and DC power lines. with illustrations

 

READERSHIP: Electrical and electronics, power supply design, systems, and radio and telecommunications engineers, and upper-level undergraduate and graduate students in these disciplines.

 

 

Simple parameters and techniques for creating manufacturable, repeatable products:

• reveals up-to-date insights into the cause and eliminaton of common mode noise in lines and equipment
• covers resistive, transformer, switcher, and UPS load
• examines lossey components and ratiated emissions
• discusses benefits and limitations of Pl, T, L, dissipative, cauer, commercial, and conventional filters
• compares and contrasts 50 and 60 Hz filters with 400 Hz
• gives matrix transfer functions for various filters
• details capacitor specifications, construction, and self-resonant frequency
• summarizes isolation, leakage current, skin effect, and voltage translation
• explores new data on spike, pulse, trapezoid, and quasisquare waves
• evaluates the input and output impedance for differential mode and DC filters
• reviews the latest high-current filters

Why call EMI filters black magic

Common and differential mode--definition, cause, and elimination

EMI filter source impedance of various power lines

Various AC load impedances

DC circuit--load and source

Typical EMI filters--pros and cons

Filter components--the capacitor

Filter components--the inductor

Common mode components

Transformer's addition to the filter

Electromagnetic pulse and voltage transients

What will compromise the filter?

Waves as noise sources

Study of the off-line regulator

Initial filter design requirements

Matrices--review of A matrices

Filter design technique

Matrix applications

Applications using round or square conducting rods

Packagine information

Design examples

Questionable designs

Review of filter design