Switch

Flexible Conduit Connector for Weather-resistant Requirements

As the leading manufacturer of flexible conduit connector and other electrical connectors in Taiwan, Bliss Yih Enterprise also offers complete selection of product line including flexible metal, flexible conduit connector, fittings, shielding or tubing conduit for our worldwide customers. We provide UL/cUL listed flexible conduit connectors that offer the most reliable performance.

 

With various functions and specifications, our high quality products will truly present different requirements for different situations such as dustproof, waterproof, contaminant protection, high tension and more. Especially, our durable connectors are flame retardant and liquid tight, resistant to weak acids, chemical, oil, alcohol, common solvents and gasoline. The connection can be ensured of fully protection in different hazardous areas


What is a LVDS?

image from img.directindustry.com

VDS, or low-voltage differential signalling, was introduced in the mid-1990’s and is very popular in computers, where it forms part of very high-speed networks and computer buses. It is a high-speed digital interface that is used for several applications that require high noise immunity and low power consumption for high data rates. LVDS is used in several applications and industries, including commercial and military applications. The LVDS standard provides guidelines defining the electrical characteristics for driver output and receiver input of an LVDS interface. Growing demands for bandwidth have resulted in the development of high performance technologies based on high-speed LVDS connections. Due to the high noise immunity and low power aspects of LVDS and the great quantity of commercial off the shelf LVDS components, several military and aerospace applications have selected LVDS as a robust and long-term solution for high-speed data transmission.

Types of LVDS

There are many different kinds of LVDS and at Future Electronics we stock many of the most common types categorized by data rate, operating temperature range, packaging type and supply voltage. The parametric filters on our website can help refine your search results depending on the specifications required.

The most common sizes for data rate are 155.5 Mbps, 400 Mbps, 800 Mbps, 1.5 Gbps and 3.125 Gbps. We also carry LVDS with data rates up to 10.3125 Mbps. Operating temperature range should also be considered, with several ranges from -65 oC to 150 oC.

LVDS From Future Electronics

Future Electronics has a full selection of LVDS, including LVDS for programming and driver, receiver, transceiver, connector, controller, switch, repeater, mini, dual, transmitter, repeater, deserializer, single channel and optical transmitter receiver units.

We offer LVDS from several manufacturers. Simply choose from the LVDS technical attributes below and your search results will quickly be narrowed to match your specific LVDS application needs.

If you have a preferred brand, we deal with several manufacturers such as Austriamicrosystems, Fairchild, Micrel Semiconductor, National Semiconductor or Pericom. You can easily refine your LVDS product search results by clicking your preferred LVDS brand below from our list of manufacturers.

Applications for LVDS:

LVDS are designed to be used for applications including flat panel displays that use an LVDS connection to the graphics card as well as for high data transmission in printers, digital copiers and cell phones. Due to its low noise emission and high noise rejection characteristics, LVDS is a reliable choice for military and aerospace applications. LVDS interfaces are used for avionic communications and surveillance to protect the integrity of the transmitted signals.

 


Wire Connector

image from img.diytrade.com

Twist-on wire connectors are used to fasten two or more electrical conductors together. They are a type of electrical connector.

Twist-on wire connectors are also known as wire nuts ("Wire-Nut" is a registered trademark of Ideal Industries) or cone or thimble connectors. Marrette or Marr connectors are two other trade names for such connectors.

In the UK, they were made out of ceramic and sold under the brand "Scruit." Their use was outlawed some fifty years ago.

Twist-on wire connectors are available in a variety of sizes and shapes and are typically made from plastic, with a tapered, conducting coiled metal insert that threads onto the wires to hold the wires secure. When the connector is twisted onto the stripped ends of the wires, they are drawn into the metal insert. The electrical continuity is maintained by both the direct wire to wire contact and by the metal insert. Twist-on wire connectors are intended to be installed by hand only, and may include molded grooves or blades intended to assist in hand installation. Hex tips or hex-like wings are commonly molded into higher-quality connectors that allow them to be installed with a common nut driver.

Twist-on wire connectors are commonly color-coded to indicate the nut's size (and hence, its wire capacity). They are commonly used as an alternative to terminal blocks or soldering conductors together because they are faster and allow subsequent removal for future rework.

Twist-on wire connectors are not generally recommended for use with aluminum wire; however, one company makes a purple-colored Wire-Nut that is listed for such use. Also, most connectors are not rated for wet use (such as exposed outdoors), a special gel-filled connector must be used in this circumstance.


What is the most electrically conductive material?

image from api.ning.com

Superconductors are materials that offer no electrical resistance whatsoever but the highest temperature any known superconductor can be while retaining its conductive properties is -181 degrees Celsius, making them an extremely impractical and expensive material for most purposes.

As far as I know the most conductive material at room temperature is pure silver, which is slightly more conductive then pure copper and 50% more conductive then pure gold.

Copper and gold are both used commonly for conduction however because copper is much cheaper then silver and nearly as conductive, and gold is more resistant to corrosion then either silver or copper despite its reduced capacity for electrical conduction.


Current Transformer

image from www.deltapowersystems.in

Current transformers can be used to supply information for measuring power flows and the electrical inputs for the operation of protective relays associated with the transmission and distribution circuits or for power transformers. These current transformers have the primary winding connected in series with the conductor carrying the current to be measured or controlled. The secondary winding is thus insulated from the high voltage and can then be connected to low-voltage metering circuits.

Current transformers are also used for street lighting circuits. Street lighting requires a constant current to prevent flickering lights and a current transformer is used to provide that constant current. In this case the current transformer utilizes a moving secondary coil to vary the output so that a constant current is obtained.


Polymer Insulators Pros and Cons

image from www.compaqinternational.com

Ceramic and glass insulators have long been the materials of choice for high-voltage insulators and lightning arresters, offering good resistance to electrical stress and outdoor exposure without significant deterioration. However, they do have disadvantages such as poor hydrophobicity and low performance under contaminated environmental conditions, low seismic performance, are prone to punctures, suffer from cement growth, pin erosion, susceptible to vandalism, relative higher installations costs.

Polymer insulators were first developed by GE in 1959 and since then many manufacturers have been trying to improve their characteristics and performances.

NCIs or composite insulators designs offer lighter weight, less breakage,improved seismic performance, high hydrophobicity and withstanding contaminated condition and more flexibility in design than ceramic insulators. These features often translate into lower installation cost, greater durability and more aesthetically pleasing line design. Yet, along these benefits problems were detected such as: bonding failures leading to flashover, hardware separation of the fiberglass core leading to line drops, chalking, crazing and shed's splitting allowing humid penetration causing electrical failure.

Polymer insulators cons are their fast aging` susceptibility to UV radiation (sun & corona); handling and storage concerns and lower withstanding to mechanical loads. Often it is being stated that the lack in experience in the HV market (less than 3 decades of use) makes trending analysis of polymer insulators hard to get.

NCI's general structure:Where the end-fittings are made of metal, the core rod is made of FRP - Fiberglass Reinforced Plastic, with an outer housing made from either silicone rubber, EPDM or EPR

One of the major and most important characteristics of Silicon is hydrophobicity i.e. the capability to form beads of water allowing a resistance to wetting. When contamination build-up is exposed to moisture, an electrolytic film can develop, leading to excessive leakage current, dry band arcing and eventually to flashover. such as wetting corona activity resulting from non-uniform wetting and high electrical field mainly on the energized and ground end-fittings.

Grading rings are being introduced lately to insulators of lower voltages. The role of corona rings is to lower the e-field stress and shift it away from the end fitting. Grading rings can prevent corona and it's derives: radio interferences, audio noise, and formation of nitric acid and ozone. (read more...).

Typical failures of polymeric insulators are brittle fractures (read more...), mechanical and electrical rod failures as flashunder, end-fitting detachments, flashover and others, all of which can be detected by a UV camera such as DayCor®

Ofil's DayCor® cameras extend the advantages of NCI insulators and diminish their disadvantages because they can alert at the early stages of partial discharges before theses turn into full discharge, arcing flashover and deterioration of the insulation material. 


What Are Electrical Insulators?

image from img.directindustry.com

Electrical insulators, or dielectrics, are materials that can withstand the flow of electrical current. In other words, they are nonconducting materials. They are the opposite of electrical conductors which allow electricity to flow through a material. Insulators help coat, protect, or support electrical conductors so that the electrical current flows through the conductor. These protective materials help prevent electrical shock or sparks.

Dielectric materials are made up of substances with electrons, or energy particles, that are compressed together by chemical process. It is almost impossible to get electrical voltage to pass through these materials. Some insulators are considered to have higher thresholds for electrical voltage than others do, and are aptly called high voltage insulators.

Glass was used as the earliest electrical insulator. Along with other non-metallic materials such as porcelain, mica, and ceramic, glass can withstand the highest volts of electrical current. In the 1800s, this material helped to protect exposed telegraph wiring. Rubber was invented in the mid-1800s, and as an electrical insulator, it was initially applied to portions of the glass insulators used to protect telegraph wiring. Along with plastics, rubber has a lower voltage threshold than glass and porcelain, because of their loose electron composition.

With the advance of telecommunications, Teflon® and silicon dioxide came to be used as electrical insulators to protect exposed wiring. These materials help protect power lines and the internal wiring within transformers and generators.

There are also composite insulators that derive from a mixture of several materials. Composite insulators are suitable for a variety of electrical engineering purposes, ranging from automobiles to appliances. They tend to lack the strength that glass and porcelain has to withstand high electrical voltage and can wear out faster, but they are ideal for a large-scale manufacturing applications because of their low costs and versatility. Porcelain insulators can break easily and can be bulky. Rubber and other composite insulators, also call non-ceramic insulators, are therefore more widely used for engineering purpose.

Screw Compressor

image from 2.imimg.com

A rotary screw compressor is a type of gas compressor which uses a rotary type positive displacement mechanism. They are commonly used to replace piston compressors where large volumes of high pressure air are needed, either for large industrial applications or to operate high-power air tools such as jackhammers.

The gas compression process of a rotary screw is a continuous sweeping motion, so there is very little pulsation or surging of flow, as occurs with piston compressors.

Rotary screw compressors use two meshing helical screws, known as rotors, to compress the gas. In a dry running rotary screw compressor, timing gears ensure that the male and female rotors maintain precise alignment. In an oil-flooded rotary screw compressor, lubricating oil bridges the space between the rotors, both providing a hydraulic seal and transferring mechanical energy between the driving and driven rotor. Gas enters at the suction side and moves through the threads as the screws rotate. The meshing rotors force the gas through the compressor, and the gas exits at the end of the screws.

The effectiveness of this mechanism is dependent on precisely fitting clearances between the helical rotors, and between the rotors and the chamber for sealing of the compression cavities.


Air Pump

image from upload.ecvv.com

An air pump is a device for pushing air. Examples include a bicycle pump, pumps that are used to aerate an aquarium or a pond via an airstone; a gas compressor used to power a pneumatic tool, air horn or pipe organ; a bellows used to encourage a fire; a vacuum cleaner and a vacuum pump.

The air compressors are the common devices which can increase the amount of air in a particular space. Air pump is used to convert power into kinetic energy. Then the air pressure will be increased. These devices create a force useful for various aspects, from industrial and manufacturing to commercial and personal purposes. 


Pencil Coil

image from www.herthundbuss.com

Pencil coils are used in vehicles with a fully electronic ignition. They are attached directly to the spark plug. With this coil type the high-voltage pulse is generated directly at the spark plug. The advantage: There is essentially no cable loss.

In addition, this compact design provides for valuable additional space - which is particularly important in modern engines - since the spark plug shaft and ignition coil would otherwise take up this essential space.

Due to its installation position directly in the cylinder head, however, this ignition coil type is subjected to higher thermal loads and often subjected to more vibrations.