New Applications Seek Better Relays

On December 23, 2018 / Blog / Leave a comment

Relays Are integral part of large systems, says inverter battery manufactures

In elementary terms, a relay is a remote control switch operated by current, temperature or magnetism. There are many different types of relays available in the market that you can choose from. A relay is supposed to meet several quality norms very strictly so that it is passed for its application. Many Inverter Dealers recommend the use of relays for a large number of reasons. According to https://thefinancialconsulting.com/relay-market-forecast-to-2023-market-size-share-analysis-and-opportunities/200971/, the market for relays is estimated to increase to a great value in the coming future. A relay is often categorized as a protective or safety equipment as any failure in its operation can also lead to a fire.

Relays in Day To Day Products

In every electronic appliance, a relay has a significant role to play. It is an undeniable fact that o circuit can be complete without it if electricity and current have to pass through it. The performance of a relay a lot depends on the material used for its construction. Indirectly, the growth of relay market will also boost the growth of the electronic raw material market in India. Companies are continually working on developing new varieties of a relay. The industry is changing at a faster pace today than it used to ever before. There are many leading manufacturers of electronic devices such as a relay who predict a better future for it in the future.

Technology in Relays

The innovation in this field is making its way to develop a world-class range of products to sort human life to the purest possible form. There are world renowned players like the Hongfa company which specializes in making relays for telecom and automotive application. It provides relays to sugar cube manufacturers also. The company has a wide range of more than 160 relays with not less than 40,000 specifications altogether. This alone explains the future expectancy from the industry.

The company introduced a DBC technology recently that could carve the path to a device with highest thermal efficiency. There is a possibility that if DBC works together with SSRs, the thermal energy of a device can be increased to something really close to infinity. This will be an excellent opportunity for our industrial sector as heat is a primary cause of loss of efficiency. With thermal productivity at its highest, the most significant reason for energy loss will be gone. Like every other electronic equipment, relays are also undergoing a lot of changes. Today we have a smaller sized relay that is cost effective too.

Growth Potential of Relays

The life of a relay in much more with the latest technology than what it used to be earlier. The rise in telecom and automotive industry has especially encouraged the growth of today’s relay industry. Today the most cost-effective and reliable materials are used in a relay making it a healthy choice for budget sensitive companies. The broad areas where the innovation is taking place are the contact coating and material, reduction in consumption of coil power, managing the arc power and lastly the improvement in contact bouncing and debouncing. It will be exciting to witness even better changes in the future when it comes to relaying as it is one of the most widely used electronic devices.

Watch Also : What is a Relay? How does a Relay work and types of Relays

Want To Choose The Best Relay?

On October 19, 2018 / Blog / Leave a comment

Relays are available in different forms like a different style, technology and so on. The right kind of relay will differ from the application you seek from the device. Industrial Architects can give you an excellent professional opinion about it. According to http://www.cpri.in/about-us/departmentsunits/power-system-division-psd/psd-protection-and-field-services-wing/relay-testing-lab.html relays are a tremendous alarming device used in security systems. A relay that is suitable for a person might not be ideal for your requirement. It is pretty obvious as the requirement can differ from application to application. You can select the best type of relay by analyzing the advantages and disadvantages they have got in terms of its construction and implementation.

First, you must know about the types of relays, and they are :

Reed relays
FET switches
Electromechanical relays
Solid State Relays

These are the basic types of ATE application. Let us talk about their strengths and weaknesses hereon. Starting with the most common one that is electromechanical relay have a shorter lifespan than many different types of a relay. However, it is more widely available in both non-latching and latching variants. It finds its application in a substantial number of switch modules. Most commonly used as compared to any other type of relay available in the market. The contacts are considered to be very reliable in this type of relay. They are versatile and come at an affordable pricing.

Reed relays are somewhat similar to the electromechanical types. The contacts of this kind are smaller and have less mass than those in other types of relays. The pace at which a reed relay switches is much higher than in case of an electromechanical relay. The contacts have less mass that encourages the connections to switch at a faster pace. There are more advantages to this variant that other kinds of relay options. One suggestion is that reed relay must not be used for extremely low voltage as it can produce you an alarming noise in the device. It can cause a disturbance in the process of taking measurements.

Solid state relays, just like the name suggests does not have any moving parts. This gives it a low maintenance credit as there is rarely any wear and tear. These are very fast because of the employ microprocessors also. The switching time is accurate as there are no movable parts. It is substantially reliable concerning how long it lasts. However, these are useful only for high voltage application. When the circuit is closed the resistance is negligible for an SSR, and as soon as it is open, there is infinite resistance in the circuit.

FET switches are not just the usual mechanical switches. It uses CMOS transistors in series to deliver a switching function. The gates of the transistor are driven directly in this case instead of driving an LED first and then the transistor gates. The switching speed is hence faster as the transistor operation happens instantly. Multiplexer configurations employ the FET switches making it ideal for low voltage and high-speed application. Now you can analyze your requirements and decide which relay is going to meet your demands more closely.

Watch Also : Types of Relay – Different Types of Relay – Classification of Relays

Know Some Facts About A Reed Relay

On August 16, 2018 / Reed Relay / Leave a comment

The term ‘Relay’ in the field of electrical or electronic engineering is known to be a device used to activate a specific circuit. Also, the term applies for transmitting signals from one place to another in the field of communication engineering. In this short article, we indent to discuss about Reed Relay, which one of the types of relays used in the electrical or electrical circuits. To further reading about these reed relays readers can use the World Wide Web and get benefitted. A reed relay contains a coil, a reed switch and in few cases diode which are encapsulated into a small or bog box with its connection terminals.

Some Technical Facts About Reed Relays

As a device, a reed relay has a low resistance metallic part which is connected in the circuit to offer isolation as well as to connect the circuit in accordance to the application for which it is being used. To put it simply, a reed relay is an activated switch either to make on or off the current path of any given circuit. In general, the reed relays are categorized as open or closed type device used in a circuit to do some specific functions as per the design and application of the device as a whole.

Reed relays are widely used in many electronic or electrical products ranging from normal voltage stabilizers used in our home, to complex devices used in aero space devices. In short, a reed relay is noting but an automatic switch which is activated only one specific condition like voltage or current fluctuations of any equipment. High capacity reed relays are used in many electrical applications which are used in power station, power distribution centers and so on.

Reed relays are designed and used in a closed environment in order to avoid any air contamination that can hamper the function of switching inside the relay encapsulated container. These relays come in various sizes and used according to many factors like power rating, thermal rating and so on. All the refrigerators use this device in order to make the unit to switch on or off in accordance with the inside temperature. Many of us should be familiar with the sound produced by our home air-conditioners or refrigerators, and this sound is produced by these relays inside the circuit.

The automatic switching of reed relays happens when the coil used near the relay gets energized and activate the needed switching. This action takes place in the coil through magnetic reflux which controls the reed relay terminals which are nothing buy copper terminals which act as a switch. Here the coil plays a key role in making the contacts in the reed relay terminals. Since a mechanical contact is established in all types of relays, these devices are also called as electro-mechanical device by the designers.

In the recent times, these reed relays come in many forms according to their application. Solid state relays are also available in the market which noting buy an electronic switch where there is no coil or reed are used. These circuits are used in many products, and it will not make any noise while switching, unlike the reed relays.

Simple Explanation About Hybrid Relay

On June 16, 2018 / Hybrid Relay / Leave a comment

In common term, a relay can be defined as an electromechanical device and is widely used for switching or breaking the electrical path called circuits. Currently, there are many types of relays available in the market, and these types are mainly derived from two primary types of relays such as electromechanical relay (EMR) and solid state relay (SSR).Thanks to the advanced technologies by making these two relays a Hybrid Relay is formed which overcomes the issues faced by both EMR and SSR.

All You Need to Know About Relays

Before proceeding to know about the hybrid relay, let us understand some basics about a relay, a device which is widely used in all types of electrical and electronic products used in homes as well as in large industries. A relay is generally known to be an electromagnetic switch consisting a coil or armature, a spring, and a electrical contact. As discussed earlier this type is known as EMR as it produces an electromagnetic field for its switching. On the other hand, SSR is an advanced type of relay which contains few solid-state elements like a diode, transistor, or FET which are combined with the moving contacts to establish a connection or to disable the current path.

Let us now study about both EMR and SSR and their merits and demerits. According to the experts EMR is considered to be highly reliable and are cost effective since it uses few parts in its construction. Also, this type of relay consumes less power when used in the electrical circuits. However, it has few downsides as this relay can produce arcing at the time of the contact due to the sudden surge of electrical current like the flood gates used in the dams.

We all know when the flood gates are opened in a dam or reservoir, the initial pressure will be high as the water reaches the lower level. In the same way, when high current is passed when the relay is switched on, the surge current produce a sudden arc which later deposited as a carbon particle in the relay switch. This reduces the life span of the EMR.

On the other hand, the SSR deploys solid state elements which can easily replace the EMR. This relay is silent and lat longer than the EMR type. However, SSR, when used in the circuit, generate heat and hence waste some power in the process. Also, this type of relay needs some colony system which adds up the cost.

It is here, the role of hybrid relay plays a critical role by using both EMR as well as SSR in order to eliminate the demerits of each type. With the introduction of hybrid relays designers can able to achieve extremely reliable switching, so has to improve the overall efficiency of the relay operations at the circuits wherever they are needed. By using both the EMR as well as the SSR in parallel higher efficiency is achieved. By this arrangement, the SSR is used in the initials switching and gets isolated after a period, and then the switching is controlled by the EMR. With this set up the aspect od heat, as well as arching, is eliminated. A hybrid relay does not need a heat sink at all which reduces the overall cost.

Read Also : Know Some Facts About A Reed Relay

Electromagnetic Relay – Its Working And Types

On April 16, 2018 / Electromagnetic Relays / Leave a comment

Relays operated using an electromagnetic action are known as electromagnetic relays. The latest Electromagnetic Relays coming up in the market are the ones that are based on microprocessors. Even after the most recent changes, the role of electromagnetic relays is constant. There is still a lot of time till the traditional electromagnetic relay gets replaced by the static relays. Let us try to know more about the different types of electromagnetic relays we have got. There are predominantly three types of electromagnetic relays comparison, magnitude measurement, and ratio measurement.

Various working principles of a relay there are further classifications

Attraction armature type relay: Straightforward construction and are used mostly as auxiliary relays. It is used as measuring relay most of the time.
Induction cup type relay: It is a disc type relay that is utilized where quick operation along with the polarization effect is required. The number of poles can differ depending on the windings of the relay.
Power Relay: It has four pole induction that produces a flux that is proportional to the voltage. It can be designed to create the highest possible amount of torque.
Reactance type induction cup relay: It is made by manipulating the coil arrangements for either voltage or current. Pure reactance can be measured by this type of relay.
Balanced Beam Relay: It is known as the variant of amateur type relay. However, the field of application of the two is entirely different. These are becoming obsolete day by day.
Moving Coil Type Relay: It is a polarized DC coil relay that is extremely sensitive in its operation. It provides accurate measurements in o time.

This was all about various types of electromagnetic relay devices. In transistors and radios, electromagnetic relays have been sued like forever. The main feature about it includes the need of low resistance and its nature to remain isolated from the control signal(physically). There are a few drawbacks of these kinds of relays as well. There are a few big sized relays, and sometimes the coils require a considerable amount of current. Sometimes the operation is slowed due to the switching speed. One has to make sure that the contacts are regularly maintained.

One might ask if a relay is similar to a transistor. Well, the answer is no, though the results required somewhere match, they are not the same thing. Transistors can sometimes perform like a relay. Earlier with the invention of transistors, the concept of television came in to picture. However, relays are used in more number of devices today due to its excellent functionality. An electromagnetic relay can produce a relatively high amount of current even when a low current is passed through it. Therefore it finds a lot of use in alarming devices, safety devices, and other quality control devices. There is much more to explore about this brilliant device. However, the use of microprocessor embedded relays can be a massive breakthrough in the future to come.

Read Also : Simple Explanation About Hybrid Relay

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