Development and production of high-grade resistors and special products, including the production equipment.

SRT Resistor Technology and Passives

High Value Resistors in Thick film technology is a Specialization. Products include precision and power resistors, special Ceramic Chip Capacitors, Temperature Sensors and other High Grade Passive Electronic Components.

SRT Resistor Technology and Passives

High Voltage in Small Size

In the expansion of the existing types of High Value and High Voltage resistor series, SRT is presenting at electronica 2006 under the designation HVR25 a leaded resistor, which has a working voltage of 15kV at a length of only 25mm.

By means of an optimized design for high working voltages, SRT has succeeded in realizing at this length and a width of 9 mm this improved version of High Voltage resistors. Compared with the type HVR30 with 30mm length, the working voltage could be increased by 5kV and the Voltage Coefficient (VCR) reduced by about 50%.

SRT Resistor Technology GmbH
Ostlandstrasse 31, 90556 Cadolzburg, Germany.

They develop and manufacture soft magnetic components and materials. These are used in the Products in Power Electronics and RF Communications. A leading world supplier of precision, high permeability magnetic components and materials to the electronics industry.

MAGNETICS – Ferrite and Powder Cores

Product line include powder cores, ferrite cores, and strip wound cores for applications such as chokes, inductors, filters and transformers.

Learn More about Ferrite Cores

Made from MnZn, ferrite cores offer economical solutions for high frequency power transformers and inductors, EMC filters, and other applications.

MAGNETICS - Ferrite Cores - Powder Cores

Ferrites are dense, homogenous ceramic structures made by mixing iron oxide with oxides or carbonates of one or more metals such as zinc, manganese, nickel or magnesium.

Ferrite ETD Cores

ETD cores are an economical choice for transformers or inductors. ETDs offer a round centerpost for minimum winding resistance. Dimensions are optimized for power transformer efficiency. Typical applications of Magnetics ETD cores include differential mode inductors and power transformers.

MAGNETICS a division of Spang & Co

Magnetics Technology Center
110 Delta Drive Pittsburgh, PA 15238-0428, USA.

Founded in 1968, Future Electronics is a worldwide leader in electronic components distribution. Their Support services include an Advanced Engineering Group made of system design experts.

Future Electronics – Components Distribution

Complete Solutions areas include Lighting, Energy, Display and Connectivity Solutions.

STM8S-DISCOVERY is a 8-bit MCU Evaluation Kit.

The STM8S-DISCOVERY is a 8-bit MCU Evaluation Kit. It helps you to discover the STM8S features and to develop and share your own application. Even though the STM8S-DISCOVERY is built around an STM8S105C6T6, it allows evaluation of the main features of all the STM8S Access line MCUs.

Future Electronics
237 Hymus Boulevard Pointe Claire, Quebec Canada H9R 5C7

They have more than 100 years of Manufacturing Excellence with very specialized tools for the Telecommunication, Electronics and Computer Industries. Precision Tools, Devices and Instruments.

Jonard Industries and OK Industries

OK Industries Division – 1946 – Tools and Instruments for telecommunications and electronics industries. Specialized Leaders in the manufacture of Wire Wrapping, and Benchtop Tools including Integrated Circuit (IC) Tools, Fume Absorbers and Desoldering Pumps.

Jonard Industries Corp – 1958 – is a World Class Manufacturer of Precision Hand Tools for the Telecom, Computer, Military and Electronic Industries.

CATV Telecom Installers Kit - TK-450M - Jonard

CATV/Telecom Installers Kit – TK-450M – Jonard

Kit contains the basic service tools essential for equipment installation, repairs and cable preparations. Fiber Optic, Coax, or Copper this versatile kit completes the requirements for a VOIP installer, Fiber Technician or Communications Specialist.

Jonard Industries Corp.
134 Marbledale Road Tuckahoe, NY 10707

Manufactures electronic and electromechanical components like Jacks, Connectors, Power Cords, Switches, Plugs, EAC Power Receptacles. etc.

Switchcraft – Electromechanical Components

These are used in areas like audio, video, telecommunication, medical, military and instrumentation industries.etc.

“Switchcraft, Inc. was established in 1946 to manufacture jacks, plugs, and switches, mainly for the communications industry. The original plant was located on West Diversey Street in Chicago. ”

Switchcraft - Electromechanical Components

“Completely enclosed, lighted pushbutton switches feature long-life, highly-reliable, leaf-springs.”

Available with or without barriers, full or split-face display. Mounts with clamp-type bracket; no screws, washers or nuts needed.

Push Lite, Front Mount Square Pushbutton Switches

Switchcraft, Inc.
5555 N Elston Ave. Chicago, IL 60630, USA

CWS provides full service from design, prototyping, pre-production run to volume production. They are experts in designing and manufacturing of magnetic components such as inductor, choke, coil and transformers. These magnetics are designed with ferrites, iron powder, MPP, sendust or high flux cores in all shapes and sizes.

CWS – Magnetics Coils Inductors Transformers

  • EMI / RFI, Inline Filters, Chokes
  • Power Magnetic
  • Inductors and Differential Mode Chokes
  • Electromagnetic Interference (EMI) Device
  • Power Line Reactor Coil
  • Antenna Coils

CWS - Magnetics Coils Inductors Transformers

Custom Design –

At CWS we understand that that common inductor coil or chokes need to be customized in order to provide top performance within a circuit. Our designers and engineers can provide the technology needed to ensure your coil can combat EMI issues and also interference with other circuits.

CWS Coil Winding Specialist
353 West Grove Ave Orange, California 92865

Manufacturer of dip, keylock, leaf, push button, rocker, rotary, slide, snap action, tact, and toggle switches. They make Sealed, illuminated pushbutton switches, SMT pushbutton switches and illuminated rocker switches too.

E-Switch – Versatile and Aesthetic Switches

E-Switch estd. 1979  manufacture electromechanical switches to the telecom, high tech, instrumentation, industrial, audio/visual, appliance and consumer markets.

E-Switch - Versatile and Aesthetic Switches

Series PB1973 Snap in Illuminated Panel Mount Pushbutton

These rectangular illuminated panel mount pushbutton switches come in many colors. Great for telecommunications, performance audio, external hard drives and modems, networking, computers, servers, instrumentation and low power on/off designs.

E-Switch, Inc.
7153 Northland Drive N. Minneapolis, MN 55428, USA

In the 1940s radio was an important means of communication. Super heterodyne radio used Murata’s tubular 500pf ceramic capacitors with  titanium oxide as dielectric material for temperature compensation.

Murata Manufacturing – Electronic Components

Products Include

Passive components like Capacitors, Resistors, Thermistors, Coils(Inductors), Delay Lines, Resonators, Noise Suppression Products and EMI Suppression Filters.

Audio Visual Parts like Spherical Speaker Products, Sound Components Filters, Modules for Audio Visual Equipment,

They also have Components and Modules for Communication Equipment. Special Sensors and Optical Products.

Murata Wireless Connectivity Products

Wireless Products –  Murata Wireless Connectivity Products and Platforms

Murata RF modules are designed to simplify wireless development and certification by minimizing the amount of RF expertise you need to wirelessly enable a wide range of applications.

Reasons for requiring EMI suppression filters

Chapter 1 describes the reasons for using EMI suppression filters, and explains how shields and filters used for electromagnetic noise suppression work.