Passive Components Blog
No Result
View All Result
  • Home
  • NewsFilter
    • All
    • Aerospace & Defence
    • Antenna
    • Applications
    • Automotive
    • Capacitors
    • Circuit Protection Devices
    • electro-mechanical news
    • Filters
    • Fuses
    • Inductors
    • Industrial
    • Integrated Passives
    • inter-connect news
    • Market & Supply Chain
    • Market Insights
    • Medical
    • Modelling and Simulation
    • New Materials & Supply
    • New Technologies
    • Non-linear Passives
    • Oscillators
    • Passive Sensors News
    • Resistors
    • RF & Microwave
    • Telecommunication
    • Weekly Digest

    Samsung Releases Automotive Molded 2220 1kV C0G MLCC

    How to Select Ferrite Bead for Filtering in Buck Boost Converter

    VINATech Offers Smallest 100µF Al-Hybrid Capacitor

    Vishay Unveils SMD 1200V PTC Thermistors in Compact Size

    Power Inductors Future: Minimal Losses and Compact Designs

    Bourns Unveils Automotive 3 Watt Gate Driver Transformer

    Murata Opens EMC Test Lab in Nuremberg to Enhance Automotive Support

    Percolation Phenomenon: Degradation of Molded Power Inductors in DC/DC Converters

    Molex Acquires Smiths Interconnect

    Trending Tags

    • Ripple Current
    • RF
    • Leakage Current
    • Tantalum vs Ceramic
    • Snubber
    • Low ESR
    • Feedthrough
    • Derating
    • Dielectric Constant
    • New Products
    • Market Reports
  • VideoFilter
    • All
    • Antenna videos
    • Capacitor videos
    • Circuit Protection Video
    • Filter videos
    • Fuse videos
    • Inductor videos
    • Inter-Connect Video
    • Non-linear passives videos
    • Oscillator videos
    • Passive sensors videos
    • Resistor videos

    How to Select Ferrite Bead for Filtering in Buck Boost Converter

    Power Inductors Future: Minimal Losses and Compact Designs

    Percolation Phenomenon: Degradation of Molded Power Inductors in DC/DC Converters

    Connector PCB Design Challenges

    Efficient Power Converters: Duty Cycle vs Conduction Losses

    Ripple Steering in Coupled Inductors: SEPIC Case

    SEPIC Converter with Coupled and Uncoupled Inductors

    Coupled Inductors in SEPIC versus Flyback Converters

    Non-Linear MLCC Class II Capacitor Measurements Challenges

    Trending Tags

    • Capacitors explained
    • Inductors explained
    • Resistors explained
    • Filters explained
    • Application Video Guidelines
    • EMC
    • New Products
    • Ripple Current
    • Simulation
    • Tantalum vs Ceramic
  • Knowledge Blog
  • Suppliers
    • Who is Who
  • PCNS
    • PCNS 2025
    • PCNS 2023
    • PCNS 2021
    • PCNS 2019
    • PCNS 2017
  • Events
  • Home
  • NewsFilter
    • All
    • Aerospace & Defence
    • Antenna
    • Applications
    • Automotive
    • Capacitors
    • Circuit Protection Devices
    • electro-mechanical news
    • Filters
    • Fuses
    • Inductors
    • Industrial
    • Integrated Passives
    • inter-connect news
    • Market & Supply Chain
    • Market Insights
    • Medical
    • Modelling and Simulation
    • New Materials & Supply
    • New Technologies
    • Non-linear Passives
    • Oscillators
    • Passive Sensors News
    • Resistors
    • RF & Microwave
    • Telecommunication
    • Weekly Digest

    Samsung Releases Automotive Molded 2220 1kV C0G MLCC

    How to Select Ferrite Bead for Filtering in Buck Boost Converter

    VINATech Offers Smallest 100µF Al-Hybrid Capacitor

    Vishay Unveils SMD 1200V PTC Thermistors in Compact Size

    Power Inductors Future: Minimal Losses and Compact Designs

    Bourns Unveils Automotive 3 Watt Gate Driver Transformer

    Murata Opens EMC Test Lab in Nuremberg to Enhance Automotive Support

    Percolation Phenomenon: Degradation of Molded Power Inductors in DC/DC Converters

    Molex Acquires Smiths Interconnect

    Trending Tags

    • Ripple Current
    • RF
    • Leakage Current
    • Tantalum vs Ceramic
    • Snubber
    • Low ESR
    • Feedthrough
    • Derating
    • Dielectric Constant
    • New Products
    • Market Reports
  • VideoFilter
    • All
    • Antenna videos
    • Capacitor videos
    • Circuit Protection Video
    • Filter videos
    • Fuse videos
    • Inductor videos
    • Inter-Connect Video
    • Non-linear passives videos
    • Oscillator videos
    • Passive sensors videos
    • Resistor videos

    How to Select Ferrite Bead for Filtering in Buck Boost Converter

    Power Inductors Future: Minimal Losses and Compact Designs

    Percolation Phenomenon: Degradation of Molded Power Inductors in DC/DC Converters

    Connector PCB Design Challenges

    Efficient Power Converters: Duty Cycle vs Conduction Losses

    Ripple Steering in Coupled Inductors: SEPIC Case

    SEPIC Converter with Coupled and Uncoupled Inductors

    Coupled Inductors in SEPIC versus Flyback Converters

    Non-Linear MLCC Class II Capacitor Measurements Challenges

    Trending Tags

    • Capacitors explained
    • Inductors explained
    • Resistors explained
    • Filters explained
    • Application Video Guidelines
    • EMC
    • New Products
    • Ripple Current
    • Simulation
    • Tantalum vs Ceramic
  • Knowledge Blog
  • Suppliers
    • Who is Who
  • PCNS
    • PCNS 2025
    • PCNS 2023
    • PCNS 2021
    • PCNS 2019
    • PCNS 2017
  • Events
No Result
View All Result
Passive Components Blog
No Result
View All Result

AC Line Filters and Insertion Loss Explained

3.1.2024
Reading Time: 3 mins read
A A

A capacitor is a crucial part of all AC line filters, and much of their performance depends on it. The performance of a capacitor to get rid of unwanted electromagnetic signals is usually referred to as insertion loss. On the following pages, we’ll take a closer look at the questions of electromagnetic noise and insertion loss in electric filters.

AC Line Filters’ Primary Purpose Is to Curb EMI

Electromagnetic interference, also shortened as EMI, is an undesired signal that has a negative impact on the electric circuit performance and can even damage it in some cases. There are interferences with both artificial (man-made) and natural origins.

RelatedPosts

Samsung Releases Automotive Molded 2220 1kV C0G MLCC

How to Select Ferrite Bead for Filtering in Buck Boost Converter

VINATech Offers Smallest 100µF Al-Hybrid Capacitor

These possible sources of EMI include lightning and storms, solar flares, motors, radar transmitters, power converters and many other devices, including cell phones (there is even a question of their possible disruption of hospital equipment).

A line filter is a device that is meant to reduce the EMI, allowing other devices in the circuit to function properly.

Though most electronic appliances come equipped with their own noise filters, there are cases in which an external filter has to be introduced – for example in unconventional mains.

How does the Whole Thing Work?

A key part in the performance of a filtering circuit is the configuration of elements that make it up, most notably the inductors and capacitors.

The most basic filter, known as the C filter, is made up of just a one feed-through capacitor. Of course, a performance of such a filter is significantly diminished. By increasing the number of inductors and capacitors and combining them in various configurations, much better performance can be achieved.

Insertion Loss and Its Importance in the Filtering Process

This is one of the chief parameters to take into account when selecting an EMI filter. An EMI filter insertion loss can be summed up as the ratio of before/after voltage once a filter has been introduced. The insertion loss is given in decibels.

There are many factors influencing the insertion loss, such as electrical configuration, circuit and source impedance, load current, and more. Let’s take a look at some of them at least.

Components Configuration

As mentioned previously, the single elements can reduce the EMI somewhat, but most filters will usually consist of several of them. A one-element filter can achieve a 20 dB insertion loss (in theory), but introducing the second element can almost double this number, not to mention adding more.

Naturally, multiple-element filters are then needed whenever a high performance is required.

Circuit Impedance

The performance of the filter is also influenced by the impedances of the source and load. One must always consider these when thinking about the optimal configuration of capacitive and inductive elements.

Load Current

Will also will have its impact on the filter’s insertion loss, based on the quality and material of the filtering parts. For example, when using ferrite inductors, some insertion loss can occur based on which material is used.

Hopefully, by now you have a better understanding of what the AC filters are, what is EMI, what is insertion loss and some factors that affect it. Feel free to elaborate further on this theme in the comments if you’re a specialist in this field – it will be a welcome addition to this article!

Related

Source: Knnit

Recent Posts

Samsung Releases Automotive Molded 2220 1kV C0G MLCC

23.10.2025
17

VINATech Offers Smallest 100µF Al-Hybrid Capacitor

23.10.2025
30

Murata Integrates Component Models into Cadence EDA Tools

21.10.2025
39

High Energy Density Polymer Film Capacitors via Molecular and Interfacial Design

15.10.2025
26

KYOCERA AVX Expands Stacked MLCC Capacitors Offering

14.10.2025
44

Silicon Capacitors Market: Shaping the Foundation for Next-Gen Miniaturization Electronics

10.10.2025
80

Enhancing Energy Density in Nanocomposite Dielectric Capacitors

9.10.2025
41

Advances in the Environmental Performance of Polymer Capacitors

8.10.2025
68

Vishay Releases DLA Tantalum Polymer Capacitors for Military and Aerospace

8.10.2025
38

Paumanok Releases Capacitor Foils Market Report 2025-2030

7.10.2025
30

Upcoming Events

Oct 28
8:00 - 15:00 CET

Power Up Your Design: SN6507 and the Ready-to-Use Development Kit

Oct 30
11:00 - 12:00 CET

Space Ceramic Capacitors with Flexible Testing

Nov 4
10:00 - 11:00 PST

Design and Stability Analysis of GaN Power Amplifiers using Advanced Simulation Tools

View Calendar

Popular Posts

  • Buck Converter Design and Calculation

    0 shares
    Share 0 Tweet 0
  • Boost Converter Design and Calculation

    0 shares
    Share 0 Tweet 0
  • Flyback Converter Design and Calculation

    0 shares
    Share 0 Tweet 0
  • LLC Resonant Converter Design and Calculation

    0 shares
    Share 0 Tweet 0
  • Ripple Current and its Effects on the Performance of Capacitors

    3 shares
    Share 3 Tweet 0
  • What is a Dielectric Constant and DF of Plastic Materials?

    4 shares
    Share 4 Tweet 0
  • SEPIC Converter Design and Calculation

    0 shares
    Share 0 Tweet 0
  • Dual Active Bridge (DAB) Topology

    0 shares
    Share 0 Tweet 0
  • MLCC and Ceramic Capacitors

    0 shares
    Share 0 Tweet 0
  • Flying Capacitors

    0 shares
    Share 0 Tweet 0

Newsletter Subscription

 

Passive Components Blog

© EPCI - Leading Passive Components Educational and Information Site

  • Home
  • Privacy Policy
  • EPCI Membership & Advertisement
  • About

No Result
View All Result
  • Home
  • Knowledge Blog
  • PCNS

© EPCI - Leading Passive Components Educational and Information Site

This website uses cookies. By continuing to use this website you are giving consent to cookies being used. Visit our Privacy and Cookie Policy.
Go to mobile version