You may have heard lots about ferrite beads, but you may be wondering – how do ferrite beads work? Unfortunately, they are not the most straightforward to understand. If you need to use them, then you need to understand them thoroughly. For example, you must understand their electromagnetic characteristics as they can change while being used. Once you are knowledgeable about ferrite beads, one must be selected for the circuit board. If you don’t select the correct one, it will cause problems.Continue reading →
What is the purpose of RF coils?The purpose of RF coils (radio frequency coils) is that they can be a transmitter, a receiver, or both. They are used in magnetic resonance imaging (MRI).Continue reading →
There are various types of power resistors:
- Wirewound resistors
- Grid resistor
- Water resistors
Express Transformers & Controls Ltd. offer power resistors in 130, 200, 300, 400, 450, 600, and 750 watt.Continue reading →
Express Transformers and Controls Ltd (2015) design and manufacture various high performing transformers. In this guide to transformers, we will discuss:
- what a transformer is
- what a transformer is used for
- transformer sizes
- the types of transformers
You can also click here to view our full range of products.Continue reading →
In simple terms, the three-phase transformer is generally a combination of three windings. This type of transformer has a lot of offer due to it’s ability to supply large loads and power distributions. It is compact, easy to install, requires low maintenance, and is a highly durable device. There are four winding connections for three-phase transformers to ensure improved performance.Continue reading →
The Power Transformer
If you are considering investing in a power transformer, it’s crucial to know the devices as best as you can. For example, the differences between high voltage verses low voltage transformers. Transformers are quite complex and a crucial element of power transmission. Furthermore, the most appealing aspect is that it can last up to three decades.Continue reading →
Auto Transformer – What Is It?
It is a transformer that has just one winding, wound around a laminated core. It is a piece of equipment that supplies power from one circuit to another. This is carried out through electromagnetic induction. Auto transformers are similar to ordinary transformers regarding their functions and features. However, there is a difference in the interrelation between their primary and secondary windings. Auto transformer advantages and applications are plentiful.Continue reading →
We are pleased to announce that we now produce tail lift power supplies that are custom designed to suit your power and cable length needs.
- Models for 415V three phase or 240V single phase supply operation
- Current rating to suit needs
- Lead lengths to suit
- Industry standard connectors
Download a copy of our Tail Lift & Refrigeration Unit Power Supplies brochure for more details.Continue reading →
We are delighted to inform you that we have purchased the business and assets of Express Transformers & Controls Limited (in Administration) from the Administrator. This is with effect from the close of business on the 28 February 2015.
We will be continuing the long-established business in Runcorn with our expert workforce and are looking forward to a long and satisfactory business relationship with your company. Our management team and Board have been enhanced and will be supported by Mr Bill Sullivan who has over 46 years of experience with the company.
We will continue to manufacture top class components and will be pleased to provide you with any quotation for the products that you may wish to buy. It will be very much ‘business as usual’ and it is with great pride that we write to you to confirm that we can ensure continuity of supply.
Should you have any queries or would like more information please do not hesitate to contact either Alan Kelly or Bill Sullivan on telephone number 01928 574491 or by email at firstname.lastname@example.org or email@example.com . For technical enquiries contact Kevin Haynes (firstname.lastname@example.org.)
We look forward doing business with you.Continue reading →