Power Supply

Reliable, high-performance power conversion solutions for critical infrastructure.

The Knowles Advantage

Knowles delivers the passive components that enable these advancements. Our portfolio includes high-voltage multilayer ceramic capacitors (MLCCs), StackiCap assemblies, and metallized film capacitors for DC link and filtering functions, ensuring superior thermal stability and long life. We also offer snubber capacitors for transient suppression, EMI/RFI filters for compliance, and custom capacitor stacks optimized for compact, high-density designs, helping industrial power supplies achieve maximum efficiency and reliability.

Knowles’ components can be found in:

  • Motor Drives: Power conversion systems that control industrial motors for automation, robotics, and manufacturing processes. 
  • Semiconductor Equipment: Specialized power solutions for wafer fabrication tools, including RF power generation and pulse systems for plasma processes.
  • Datacenter Power Supplies: High-efficiency AC/DC and DC/DC converters that deliver reliable power for servers and critical IT infrastructure.
  • Automated Guided Vehicles (AGVs): Multi-stage power conversion for autonomous material handling systems in smart factories and warehouses.

Reliable Power Solutions for Critical Infrastructure

Advanced Capacitors for Reliable Power Systems

Knowles’ power supply solutions deliver a comprehensive portfolio of high reliability capacitors and engineered assemblies that enable stable, efficient energy conversion across UPS, HVDC, renewable, and high-power computing systems.

  • UPS Capacitors: Aluminum electrolytic, film, and MLCCs for input filtering, DC link stability, and EMI/RFI compliance. 
  • Energy Storage and Transmission: Film and ceramic capacitors enable voltage stabilization and efficient power conversion in HVDC systems, battery energy storage, and renewable energy applications.
  • AI Datacenter Solutions: Low-loss capacitors and inductors that improve power density and reduce switching losses.
  • Custom Assemblies for Extreme Reliability: Engineered capacitor assemblies and large-scale holdup solutions for industrial, aerospace, and defense-grade power systems. 
  •  Broad Power Infrastructure Expertise: Ingrated ceramic, film, and electrolytic technologies for demanding voltage, temperature, and lifetime requirements. 

Educational Resources

Blogs
Whitepapers
Microgrids and Solid State Transformers

Microgrids and Solid State Transformers: Powering the Future of Resilient Energy

Today’s power grids are under increasing strain, from rising instability and greater electrification demands to the rapid expansion of renewable energy sources. Together, these pressures are creating an urgent need for more resilient and responsive power distribution architectures.
View Article for Microgrids and Solid State Transformers: Powering the Future of Resilient Energy
View Article for Microgrids and Solid State Transformers: Powering the Future of Resilient Energy
Supercapacitors in Action: Enhancing Backup Power and Load Management

Supercapacitors in Action: Enhancing Backup Power and Load Management

Supercapacitors, also known as electric double-layer capacitors (EDLCs), store energy electrostatically rather than via chemical reactions like traditional batteries. Their unique characteristics make them ideal for applications requiring short bursts of power and/or durability over time.
View Article for Supercapacitors in Action: Enhancing Backup Power and Load Management
View Article for Supercapacitors in Action: Enhancing Backup Power and Load Management
Powering the Energy Transition From The Inside Out

Powering the Energy Transition from the Inside Out

By 2050, electricity is expected to more than double its share of final energy consumption, jumping from 23 percent to 52 percent. As a result, the way the world generates, transmits, stores, and uses energy is changing.
View Article for Powering the Energy Transition from the Inside Out
View Article for Powering the Energy Transition from the Inside Out
The Benefits of Using Supercapacitors for Recloser Back-Up Power

The Benefits of Using Supercapacitors for Recloser Back-Up Power

To protect electrical grids from overloads and faults, utility companies can incorporate reclosers. When a fault occurs, this high-voltage circuit breaker automatically closes to isolate the faulty sections of the grid, allowing other areas of the grid to continue to operate safely.
View Article for The Benefits of Using Supercapacitors for Recloser Back-Up Power
View Article for The Benefits of Using Supercapacitors for Recloser Back-Up Power
Power Electronics The Hidden Heart of Semiconductor Manufacturing

Power Electronics: The Hidden Heart of Semiconductor Manufacturing

Semiconductor manufacturing is one of the most advanced industrial processes on Earth, requiring precise control of energy and materials at the nanometer scale. Behind that precision lies an invisible backbone: the power electronics systems that deliver, shape, and regulate every watt of energy that drives chip production.
View Article for Power Electronics: The Hidden Heart of Semiconductor Manufacturing
View Article for Power Electronics: The Hidden Heart of Semiconductor Manufacturing
Capacitor Roles in High-Power Class E RF Generators

Capacitor Roles in High-Power Class E RF Generators

Radio frequency (RF) generators produce alternating current (AC) at specific frequencies ranging from kilohertz to gigahertz.
View Article for Capacitor Roles in High-Power Class E RF Generators
View Article for Capacitor Roles in High-Power Class E RF Generators

Supercapacitors in Power System Design

Learn how supercapacitors are transforming modern power systems by addressing limitations in traditional energy storage and ...
View Resource for Supercapacitors in Power System Design
View Resource for Supercapacitors in Power System Design

The Role of Specialty Capacitors in Power Electronics

Explore how specialty capacitors enable critical functions like noise control, energy storage, and system protection in powe...
View Resource for The Role of Specialty Capacitors in Power Electronics
View Resource for The Role of Specialty Capacitors in Power Electronics

Power Conversion Capacitors for Harsh Environments

Examine how growing outdoor power conversion applications are increasing performance demands.
View Resource for Power Conversion Capacitors for Harsh Environments
View Resource for Power Conversion Capacitors for Harsh Environments

Product Documentation

Capacitors for AI Datacenters

Capacitors that enable reliable, high-efficiency power delivery for AI data centers and high-density server infrastructure.
View Resource for Capacitors for AI Datacenters
View Resource for Capacitors for AI Datacenters

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