博文

7 Causes for High-frequency Transformer Heating You Must Be Aware of !

图片
  High-frequency transformers will produce copper loss and iron loss during operation. These two losses are finally converted into heat energy, which makes the iron core and winding of the high-frequency transformer heat up and the temperature rises. In addition, the windings also generate heat through current. When the heat of the high-frequency transformer is dissipated to the environment to reach thermal equilibrium, the temperature of each part of the high-frequency transformer should be a stable value. If the temperature of each part of the high-frequency transformer exceeds its allowable range for a long time, especially when the oil temperature of the high-frequency transformer is higher than normal by more than 10℃ or the temperature is still rising, the insulation of the high-frequency transformer is easy to be damaged, and it is easy to be damaged. High voltage breakdown causes malfunction or accident. Therefore, during normal operation of the transformer, it is not allow...
1 条评论
阅读全文

The Importance of Predictability for High-end PCB Manufacturing

图片
  If there is a way to ensure that the product is reliable, it is to ensure the predictability of its PCB, which is an important part of the product. In fact, PCB is the core component in almost all electronic products (from phones to computer systems) today. From automobiles to national defense, from aviation to technology, PCBs are ubiquitous in any industry. In all these industries, product reliability is of paramount importance. Whether it is medical technology or aviation technology, any mistake can cause huge losses. Similarly, in the medical field, equipment failure can have terrible consequences, leading to loss of life. This requires rewriting the traditional predictability method. Traditional predictability methods are usually based on  physical inspection .  However, physical inspection has inherent disadvantages, that is, only external defects can be inspected. Another problem faced by physical inspection is that when the PCB is complex and has countless vias,...
1 条评论
阅读全文

How to Choose the 5 Kinds of Adhesives for Membrane Switch Panels?

图片
No matter LED membrane switches or graphic control panels, both need to use one thing: the back adhesive layer (hereinafter referred to as adhesive). Membrane switches and panels made by JRPanel insist on choosing 3M imported genuine adhesives. We focus on customer needs, taking into account the different needs of different customers in terms of budget, product function design, etc., there are 5 kinds of adhesives provided by JRPanel , namely 3M55236, 3M9448A, 3M467MP, 3M468MP, 3M300LSE, and there are many choices. If you want to understand the use of adhesives, what are the differences between the five types of adhesives, and the precautions for the use of adhesives, please read on. 1. The  U se of  A dhesive JRPanel’s main business includes membrane switches and membrane panels , and adhesives are required for these two products . Adhesive has the advantages of tearing and using, easy assembly, easy t...
1 条评论
阅读全文

Definition and Classification of High Frequency Transformer

图片
  What is a high frequency electronic transformer? In fact, the definition of high-frequency electronic transformers is very clear. In order to show the true nature of high-frequency electronic transformers, it is necessary to clarify the concepts of transformers, electronic transformers, and high-frequency electronic transformers in order to eliminate misunderstandings.   First of all , we have to figure out what a transformer is. A transformer that works on the principle of electromagnetic induction means that an alternating voltage is applied to the primary winding of the coil, and an output voltage is induced in the secondary winding, so as to transmit energy, transform voltage (or signal), and electrically isolate.   To produce electromagnetic induction, the primary winding must be applied with alternating voltage. The kind that uses DC voltage as a working power source is an inverter that converts DC to AC.   As long as there is electromagnetic induction, the t...
1 条评论
阅读全文

Safety Tips for Working with Your Transformer

图片
The Importance of Transformer Safety   When using equipment that emits a large amount of voltage, much like some transformers do, it is paramount that you take safety precautions into account.   When safety precautions are not met, system breakdown, emergency shutdown, and injury can result, each of which can place your operations in jeopardy.   Understanding your transformer ’ s design and proper installation will ensure successful machinery operation.   The transformer safety practices mentioned herein can be utilized in any piece of transformer machinery, independent from the manufacturer or system type.   The Top 10 Tips for Transformer Safety   1. Monitor your transformer before it is installed, checking for any burning smell, cracked or unsuitable power cords or plugs, and loose or misaligned parts.   2. Regularly inspect your transformer to minimize system failure or breakdown.   3. When any work is performed on the transform...
1 条评论
阅读全文

Why Is Magnetics Important in High Frequency Transformers?

图片
  Magnetics in High Frequency Transformers   Advances in electronic system technology have led to an increasing demand for higher power density. As power density requirements increase, the physical size requirements of these systems continue to tend to decrease.   One solution to meet and optimize these two design parameters is to integrate electromagnetic power components operating at high frequencies. This approach has several advantages, including reducing the size of the required magnetic components. However, due to skin and neighborhood effects, power loss can also be caused. In addition, if precautions are taken, AC loss will affect the overall performance of the component.   One way to avoid AC loss is to use special conductive materials in high frequency applications, such as stranded wires and copper foil. The design and construction of these materials greatly reduces the risk of loss of skin and proximal effects.   Application of High Frequency Transfo...
1 条评论
阅读全文

What Is Sheet Metal Fabricating? JRPanel Will Tell You! Part 1

图片
  So you’re new to sheet metal. Perhaps you’re fresh out of engineering school and need to design a modulator bracket for your employer’s next greatest karaoke system, or you’ve been assigned to the purchasing department and need to source those same parts. The problem is, you don’t know where to start. Should you have them laser-cut and bent on a press brake, stamped in a progressive die, or punched and welded? Precision sheet metal fabrication offers tremendous flexibility, and it’s often difficult for even experienced hands to determine the most cost-effective manufacturing process.   Everyone has to start somewhere, though, so let ’ s begin with the term  “ fabrication. ”  Merriam Webster defines it as  “ to construct from diverse and usually standardized parts. ”  This terse description is technically accurate, but it ’ s also far too vague, and could be applied just as well to IKEA furniture as it can to the modulator bracket with which you ’ ve been ...
发表评论
阅读全文