Xuzhou Jiuli Electronics Co., Ltd

Xuzhou Jiuli Electronics Co., Ltd

The high-frequency transformer generates excessive heat and has low efficiency? Jili helps you solve this troublesome problem!

2026 07/16

Anyone who works in the field of power equipment must have encountered this: the high-frequency transformer. It may seem insignificant at first glance, but when it breaks down, it causes the most problems. Many high-frequency transformers on the market have poor iron core materials and rough winding processes. As they are used, they generate excessive heat, and once the temperature rises, the efficiency drops sharply, causing the entire power module to suffer. Some transformers have a high rated power, but when they are actually under load, they overheat. Customers' equipment frequently gives out alarms, and your customer service phone keeps ringing non-stop. Not to mention those who cut corners, with thin insulation layers that break down after a short time and are directly scrapped. To put it simply, many manufacturers only focus on manufacturing the transformers but do not put much effort into their stability during mass production. 
The customers are also quite troubled. For those manufacturing switching power supplies, the transformer is the part they are most afraid of because it must perform well. If the winding of the E-switching power supply transformer is uneven and has a large leakage inductance, not only will the efficiency be low, but it will also interfere with other circuits, causing the overall EMC to fail. For those manufacturing high-frequency power supplies, if the magnetic core has high loss and cannot withstand the heat, the heat dissipation cost will increase and the size will also become larger. For those manufacturing high-power equipment, if the temperature rise control is not good, in the summer, the insulation will age rapidly and the lifespan will be directly reduced. What everyone really needs is a high-frequency transformer with low temperature rise, high efficiency, good batch consistency, and ease of installation and use. It will be convenient to install and users will be assured when using it. 
Jiuli produces high-frequency transformers and their design approach is straightforward. The magnetic core materials we use have been carefully selected, with low loss and excellent saturation characteristics. Unlike some manufacturers who cram in whatever cheap materials they can get. In terms of winding process, we use precision winding equipment, arranging each coil neatly, resulting in low leakage inductance and well-controlled distributed capacitance. In terms of insulation, we use three-layer insulated wires combined with vacuum impregnation, with high voltage resistance and not cracking even under long-term operation. Before each batch leaves the factory, we conduct voltage resistance tests, inductance measurements, and turns ratio tests to ensure that the products received are at the same level as the samples. 
In terms of performance, customers using the Jiuli high-frequency transformer generally report that the temperature rise is 5 to 10 degrees lower than before, the efficiency has increased by two or three percentage points, and the overall stability of the machine has significantly improved. Moreover, the batch consistency is high, and there is no need to pick when installing it; it can be directly installed. What is the value? It's not about saving money, but about saving effort. The transformer does not generate heat, so the heat sink can be made smaller, and the entire machine can be made smaller, resulting in a lower cost. Without any malfunctions, the after-sales service is reduced, and the reputation naturally improves. 
Product Features: 
1.The core material has been carefully selected, featuring low loss, good saturation characteristics, low heat generation, high efficiency, and suitability for long-term load operation.
2.The precise wiring process ensures uniform and neat winding, with low leakage inductance, small distributed capacitance, reducing circuit interference, and making EMC easier to pass.
3.The three-layer insulated wire with vacuum impregnation has high voltage resistance, stable insulation performance, and does not become brittle during long-term operation, with a long service life.
4.Full inspections are conducted upon leaving the factory, with each unit undergoing tests for voltage resistance, inductance, and turns ratio. The batch consistency is good, and there is no need to pick during machine operation.
 
Tips:
1.After receiving the transformer, first measure the inductance and leakage inductance using an LCR meter to confirm if they are within the specification range. Then proceed with the machine debugging.
2.When powering on for the first time, it is recommended to run at light load for a while to monitor the temperature rise and confirm if the cooling conditions are sufficient. Then gradually increase to full load.
3.If used in a humid environment, it is recommended to apply a layer of three-proof paint on the surface of the transformer to prevent moisture and salt fog, thereby extending its service life.
 
Purchase Tips: 
Before placing an order, please confirm the input voltage, output voltage, power, working frequency and other parameters. We will customize according to your specifications, not standard products. Communicate with us before placing the order.
 
Jiuli doesn't do anything fancy. It just selects high-quality materials, ensures excellent craftsmanship, and tests each transformer. High-frequency transformers have the advantage of low heat generation, high efficiency, and stable batch production. These are the real skills. Once installed, there's no need to worry. Customers can use it with confidence. This is the value of Jiuli.