• Latest
  • Trending
  • All
  • Capacitors
  • Resistors
  • Inductors
  • Filters
  • Fuses
  • Non-linear Passives
  • Applications
  • Integrated Passives
  • Oscillators
  • Passive Sensors
  • New Technologies
  • Aerospace & Defence
  • Automotive
  • Industrial
  • Market & Supply Chain
  • Medical
  • RF & Microwave
  • Telecommunication

Capacitor Energy Content and Force

2.10.2023

Cornell Dubilier Unveils Y2 Class Interference Suppression Capacitors

4.10.2023

Bourns Unveils ChipGuard® ESD Suppressors

4.10.2023

September 23 – Interconnect, Passives & Electromechanical Components Market Insights

3.10.2023

Choosing the Right Noise Filters for Automotive Networks

3.10.2023

Ceramic Capacitors Supporting DC Link Filters

3.10.2023

KYOCERA AVX is Acquiring Bliley Technologies, A Global Leader in Low-Noise Frequency Control Products

3.10.2023
  • Home
  • Privacy Policy
  • EPCI Membership & Advertisement
  • About
No Result
View All Result
NEWSLETTER
Passive Components Blog
  • Home
  • NewsFilter
    • All
    • Aerospace & Defence
    • Antenna
    • Applications
    • Automotive
    • Capacitors
    • Circuit Protection Devices
    • Filters
    • Fuses
    • Inductors
    • Industrial
    • Integrated Passives
    • Market & Supply Chain
    • Market Insights
    • Medical
    • New Materials & Supply
    • New Technologies
    • Non-linear Passives
    • Oscillators
    • Passive Sensors
    • Resistors
    • RF & Microwave
    • Telecommunication
    • Weekly Digest

    Cornell Dubilier Unveils Y2 Class Interference Suppression Capacitors

    Bourns Unveils ChipGuard® ESD Suppressors

    September 23 – Interconnect, Passives & Electromechanical Components Market Insights

    Choosing the Right Noise Filters for Automotive Networks

    Ceramic Capacitors Supporting DC Link Filters

    KYOCERA AVX is Acquiring Bliley Technologies, A Global Leader in Low-Noise Frequency Control Products

    Resonant MLCC OBC Application Guide

    Bourns Releases New Compact Size High Current Ferrite Beads

    Skeleton Demonstrated Supercapacitor Based Shuttle Charging in Seconds

    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
    • Filter videos
    • Fuse videos
    • Inductor videos
    • Non-linear passives videos
    • Oscillator videos
    • Passive sensors videos
    • Resistor videos
    • Sensors

    Charging/Discharging of Linear andNon-linear Capacitors

    How to Select Inductor For Switching Power Supply

    Oscillators Integration, Selection Guide and Design In

    Input Capacitor Selection for Power Supplies – Part 3: Electrolytic Capacitors

    Input Capacitor Selection for Power Supplies Part 2 – Ceramic Capacitors

    Input Capacitor Selection for Power Supplies Video (Part 1)

    Vishay Webinar: Components Selection for Solar Panel Systems

    Capacitors Basics: Decoupling

    Totem Pole PFC Design for E-Mobility; Microchip and WE Video

    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
    • Preferred Suppliers
    • Who is Who
  • Events
  • Home
  • NewsFilter
    • All
    • Aerospace & Defence
    • Antenna
    • Applications
    • Automotive
    • Capacitors
    • Circuit Protection Devices
    • Filters
    • Fuses
    • Inductors
    • Industrial
    • Integrated Passives
    • Market & Supply Chain
    • Market Insights
    • Medical
    • New Materials & Supply
    • New Technologies
    • Non-linear Passives
    • Oscillators
    • Passive Sensors
    • Resistors
    • RF & Microwave
    • Telecommunication
    • Weekly Digest

    Cornell Dubilier Unveils Y2 Class Interference Suppression Capacitors

    Bourns Unveils ChipGuard® ESD Suppressors

    September 23 – Interconnect, Passives & Electromechanical Components Market Insights

    Choosing the Right Noise Filters for Automotive Networks

    Ceramic Capacitors Supporting DC Link Filters

    KYOCERA AVX is Acquiring Bliley Technologies, A Global Leader in Low-Noise Frequency Control Products

    Resonant MLCC OBC Application Guide

    Bourns Releases New Compact Size High Current Ferrite Beads

    Skeleton Demonstrated Supercapacitor Based Shuttle Charging in Seconds

    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
    • Filter videos
    • Fuse videos
    • Inductor videos
    • Non-linear passives videos
    • Oscillator videos
    • Passive sensors videos
    • Resistor videos
    • Sensors

    Charging/Discharging of Linear andNon-linear Capacitors

    How to Select Inductor For Switching Power Supply

    Oscillators Integration, Selection Guide and Design In

    Input Capacitor Selection for Power Supplies – Part 3: Electrolytic Capacitors

    Input Capacitor Selection for Power Supplies Part 2 – Ceramic Capacitors

    Input Capacitor Selection for Power Supplies Video (Part 1)

    Vishay Webinar: Components Selection for Solar Panel Systems

    Capacitors Basics: Decoupling

    Totem Pole PFC Design for E-Mobility; Microchip and WE Video

    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
    • Preferred Suppliers
    • Who is Who
  • Events
No Result
View All Result
Passive Components Blog
No Result
View All Result

Capacitor Energy Content and Force

2.10.2023
Reading Time: 5 mins read
A A
116
VIEWS

The article describes capacitor energy content, what energy can be stored and delivered by the capacitor and what forces present inside a capacitor.

Capacitor Energy Content

The energy stored in a capacitor can be described by equation:

RelatedPosts

Failure Analysis of Capacitors and Inductors

Variable Capacitors, Varactors and Trimmers

Supercapacitors

……………[1]

Force action

from electromagnetic fields

Parallel current carrying conductors are surrounded by magnetic fields exerting forces on each other. If currents flow in the same direction the fields (and the conductors) attract each other. If the current flows in opposite directions they are repelling each other.

Figure 1. Magnetic force action, F, between conductors with a current flow, I. B = magnetic flux density.

If

  • the conductor length l is expressed in m,
  • the current I is expressed in A and
  • the distance a is expressed in m,

the force per meter between the conductors will be

………………………[2]

According to the basic charge formula Q = C x V (As). If this expression is derived we obtain dQ/dt = I = C x dV/dt (A). Pulse loads are not unusual, especially in conditions with high voltage gradients, and thus high charging currents also occur which might cause appreciable magnetic fields between close lead patterns, for example.

Force action in electrostatic fields

Capacitors are typical examples of applications where electrostatic fields are applied. These fields can generate significant mechanical forces­. If we know the electrode distance d (m) it’s easy to determine the electric field strength E (V/m). Then we can outline the force per unit area, i.e. the pressure that the electrodes exert on the dielectric.

This image has an empty alt attribute; its file name is EQ-C1_22.jpg

……………………………….. [3]

Example. Suppose we have an oil impregnated paper capacitor with r = 5 and the dielectric = 15 m (0.6 mils) which is loaded with 250VAC. Then the instantaneous maximum pressure will be

This image has an empty alt attribute; its file name is EQ-C1_22b.jpg

0.1 kp/cm2 !

If we instead calculate on a 35 V solid tantalum capacitor with a typical and approximate dielectric thickness of 0.2 mm (0.008 mils) the formula gives at 30 V DC a pressure of

This image has an empty alt attribute; its file name is EQ-C1_22c.jpg

2 N/mm2 !

It is difficult to determine how much the dielectric is influenced by such forces, especially when the electrodes have such complex configurations. Electrostatic action of such forces here is of vital importance.

Electrostatic Force Potential Impact

We learned in the article about the energy stored in the capacitor, but what is also important and demonstrated is that there is enormous mechanical pressure between the electrodes once voltage is applied.

This can be considered in failure analyses if we have a solid, sharp impurity within the capacitor dielectric – it may degrade the insulator not only by inducing electrical conductivity/increasing leakage current, but also causing a mechanical damage to the dielectric due to the high electrostatic pressure between the electrodes. Hard and sharp micro-crystals in amorphous dielectric could be an example of such defects.

Related Posts

Capacitors

Cornell Dubilier Unveils Y2 Class Interference Suppression Capacitors

4.10.2023
2
Capacitors

Ceramic Capacitors Supporting DC Link Filters

3.10.2023
21
Capacitors

Resonant MLCC OBC Application Guide

2.10.2023
91

Upcoming Events

Oct 3
October 3 @ 12:00 - October 5 @ 14:00 EDT

Design and Test of Non-Hermetic Microelectronic

Oct 11
11:00 - 12:00 CEST

Stretchable Electronics

Oct 16
October 16 - October 19

Digital WE Days 2023 – Virtual Conference

View Calendar

Popular Posts

  • Ripple Current and its Effects on the Performance of Capacitors

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

    4 shares
    Share 4 Tweet 0
  • Resonant MLCC OBC Application Guide

    0 shares
    Share 0 Tweet 0
  • How to Choose the Right Inductor for DC-DC Buck Applications

    0 shares
    Share 0 Tweet 0
  • Understanding High-Precision Resistor Temperature Coefficient of Resistance

    0 shares
    Share 0 Tweet 0
  • Leakage Current Characteristics of Capacitors

    0 shares
    Share 0 Tweet 0
  • Why Low ESR Matters in Capacitor Design

    0 shares
    Share 0 Tweet 0
  • Coefficient of Linear Thermal Expansion on Polymers Explained

    0 shares
    Share 0 Tweet 0
  • MLCC and Ceramic Capacitors

    0 shares
    Share 0 Tweet 0
  • Capacitor Selection for Coupling and Decoupling Applications

    28 shares
    Share 28 Tweet 0

Newsletter Subscription

 

Archive

2023
2022
2021
2020
2019
2018
2017

Symposium

Passive Components Networking Symposium

Passives e-Learning

Knowledge Blog

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

© EPCI - Premium Passive Components Educational and Information Site

No Result
View All Result
  • Home
  • News
  • Video
  • Knowledge Blog
  • Preferred Suppliers
  • Events

© EPCI - Premium 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.