EMI Filter Design 2nd [CRC Press]

keroppi

Contents
Preface
1. Why Call EMI Filters Black Magic?
1.1 What Is EMI?
1.2 A Standard Filter Company Contrasted with
an EMI Company
1.3 Power Density Spectrum or Envelope
1.4 Power Transfer
1.5 Specifications: Real or Imagined
1.6 The Inductive Input for the 220A Test Method
1.7 The 400-Hz Filter Compared with the 50- or 60-Hz Filter
1.8 Three-Phase Filters
2. Common and Differential Mode—Definition, Cause,
and Elimination
2.1 Common and Differential Mode Definitions
2.2 What Creates Common Mode Noise on the Line Side?
2.3 What Creates Common Mode Noise from the Equipment Side?
2.4 What Eliminates Common Mode Noise from the Line and
Equipment?
2.5 What Creates Differential Mode Noise?
2.6 Three-Phase Virtual Ground
3. EMI Filter Source Impedance of Various Power Lines
3.1 Skin Effect
3.2 Applying Transmission Line Concepts and Impedances
3.3 Applying Transmission Line Impedances to Differential and
Common Mode
3.4 Differences Among Power Line Measurements
3.5 Simple Methods of Measuring AC and DC Power Lines
3.6 Other Source Impedances
4. The Various AC Load Impedances
4.1 Resistive Load
4.2 Off-Line Regulator with Capacitive Load
4.3 Off-Line Regulator with Inductor Before the Capacitor
4.4 The Power Factor Correction Circuit
4.5 Transformer Load
4.6 The UPS Load
5. DC Circuit—Load and Source
5.1 Various Source Impedances
5.2 Switcher Load
5.3 DC Circuit EMI Solutions or Recommendations
5.4 Lossy Components
5.5 Radiation Emissions
6. Typical EMI Filters—Pros and Cons
6.1 The π Filter
6.2 The T Filter
6.3 The L Filter
6.4 The Typical Commercial Filter
6.5 The Dissipative Filter
6.6 The Cauer Filter
6.7 The RC Shunt
6.8 The Conventional Filters
6.9 Matrix—Test Specification and the Filter to Use
7. Filter Components—The Capacitor
7.1 Capacitor Specifications
7.2 Capacitor Construction and Self-Resonance Frequency
7.3 Veeing the Capacitor
7.4 Margin, Creepage, and Corona—Split Foil for High Voltage
7.5 Capacitor Design
8. Filter Components—The Inductor
8.1 Inductor Styles and Specifications
8.2 The Powder Cores
8.3 Inductor Design
8.4 Converting from Balanced to Unbalanced or the Reverse
9. Common Mode Components
9.1 Capacitor to Ground
9.2 Virtual Ground
9.3 Z for Zorro
9.4 Converting Common Mode to a Differential Mode Filter
9.5 Equations for the Common Mode Via the Differential Mode
9.6 Common Mode Inductor Used for Differential Mode
9.7 Other Wave Shapes Besides Sine Waves Work
10. The Transformer’s Addition to the Filter
10.1 Transformer Advantages
10.2 Isolation
10.3 Leakage Current
10.4 Common Mode
10.5 Voltage Translation—Step Up or Down
10.6 The Transformer as Part of an EMI Package
10.7 Skin Effect
10.8 Review
11. Electromagnetic Pulse and Voltage Transients
11.1 The Three Theories
11.2 The Location of the Arrester
11.3 How to Calculate the Arrester
11.4 The Gas Tube
12. What Will Compromise the Filter?
12.1 Specifications—Testing
12.2 Power Supplies Either as Source or Load
12.3 Transformers: 9- and 15-Phase Autotransformers
12.4 Neutral Wire Not Part of the Common Mode Filter
12.5 Two or More Filters in Cascade—The Unknown Capacitor
12.6 Poor Filter Grounding
12.7 The “Floating” Filter
12.8 Unknown Capacitor in the Following Equipment
12.9 Input and Output Too Close Together
12.10 Gaskets
13. Waves as Noise Sources
13.1 The Spike
13.2 The Pulse
13.3 The Trapezoid
13.4 The Quasi-Square
13.5 Why Differentiate?
13.6 The Power Spectrum—dB μA/MHz
13.7 MIL STD 461 Curve
14. Study of the Off-line Regulator
14.1 With or Without Critical Value of Inductance—
Size and Weight Difference of the Filter
14.2 The Added Power Line Harmonic Content Caused
by the Off-Line Regulator
14.3 Keith Williams’ Method
15. Initial Filter Design Requirements
15.1 Differential Mode Design Goals
15.2 Input Impedance of the Differential Mode Filter
15.3 Output Impedance of the Differential Mode Filter
15.4 Input and Output Impedance for a DC Filter
15.5 Common Mode Design Goals
15.6 Estimate of Common Mode Load Impedance
15.7 Methods of Reducing the Size of the Inductor Due to
Inductor Current
16. Matrices—Review of A Matrices
16.1 Chain Matrix A: Transfer Functions
16.2 Review of A Matrices
17. The Filter Design Technique
17.1 The Unit Matrix
17.2 The Rs Matrix
17.3 The LINESIM Matrix
17.4 The LISN Matrix
17.5 The DIN and DOUT Matrices
17.6 The RCSHU Matrix
17.7 The Series Inductor, LSER, and the Shunt Capacitor,
CSHU
17.8 The L Matrix
17.9 The π Matrix
17.10 The T Matrix
17.11 The Cauer Matrix or Elliptic Filter
18. Matrix Applications
18.1 Single-Phase AC Filter
18.2 Three-Phase Filter
18.3 Telephone and Data Filters
18.4 Impedance-Matched Filters—What Is the Impedance
Limit?
18.5 Pulse Requirements—How to Pass the Pulse
18.6 The DC-to-DC Filter
18.7 Low-Current Filters
18.8 F0—the Easy Way
18.9 Remote High-Voltage Supply Fed from a Local
DC Power Supply
19. Applications Using Round or Square Conducting Rods
19.1 Very High Current Filters
19.2 High-Current Second Method
19.3 High-Current Method Three
19.4 Review of High-Current Filters
19.5 Three in Parallel
19.6 Conclusion
20. Packaging Information
20.1 The layout
20.2 Estimated Volume
20.3 Volume-to-Weight Ratio
20.4 Potting Compounds
21. Design Examples
21.1 Southeast Asia Filter for the Navy
21.2 The Faulty 400 Hz Source
21.3 The Round Rod Filter in Chapter 19
22. Questionable Designs
22.1 28 Volts at 35 Amps
22.2 120 Volts, 60 Hz, with Transzorbs
22.3 The 28 V DC Filter
22.4 120 V AC 400 Hz
22.5 Review
23. Review of Filter Design
23.1 Filter Design Review
23.2 Filters in Tandem
23.3 Q
23.4 Testing the Filters

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1# keroppi

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