Super EF transformer suitable for LED driver We are committed to produce EF transformer in China, welcome to the factory ! it with excellent technology and good performace, The high frequency transformer with EF series bobbin and ferrite core....
We are committed to produce EF transformer in China, welcome to the factory !
How is the high frequency transformer wound?
Two things must be noted to make it well:
One: each winding should adopt many fine copper wires and be wound together, not
single thick copper wire, because high frequency ac has skin effect.
The so-called skin effect, simply put, is that high frequency ac only walks along the
surface of the wire.The inside of the wire does not run current
The weaker the axial current in the wire, the closer it is to the surface of the wire,
the stronger the current is.The use of multiple strands of thin copper wire and winding
together, is actually to increase the wire
The surface area of the wire, thereby making it more efficient to use the wire.For example,
the primary 3T+3T, if you use a single enamelled wire with a diameter of 2.50mm, the
cut of the wire
The area is 4.9 mm square, and if 38 pieces of enamelled wire (single section area 0.132 mm square)
with a diameter of 0.41mm are used and wound, the total cut is
The area also meets the requirement.However, the second method has a much larger surface area of
the wire (the first method has a surface area of a single wire cut off)
The surface circumference * the number of shares * the total length of the winding =2.5 * 3.14 * 1 * L=7.85L
Perimeter x number of shares by winding the total length = 0.41 * 3.14 * 38 * L = 48.92 L,
and the latter is the former's 48.92 L / 7.85 L = 6.2 times),conductor
It has higher effective utilization rate, more smooth current, and more flexible
winding because of the soft thin wire. The secondary 75T high voltage winding can
be wound by 3 to 5 pieces.
Place of origin:Guangdong,China (Mainland)
External structu…Vertical or horizontal are availa…
lnput rated Volt…Single-phase220V-230V
Output voltage:According to the customer'a p…
Standard export carton
5-7 working days after payment confirmed
Well-developed EF transformer , high-efficiency process of management
Best-selling of EF transformer from feneng factory with good perfomance
Why us ?
More than 14 years’ production experience.
Advanced machining and test equipment.
Super design ability by creative design team.
Companies strictly enforce the ISO9001:2015 system to ensure product quality.
Feneng earned 53 innovation awards.
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ETD High Frequency Transformer
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With a factory area of 33,000 square meters, construction area of 20,000 square meters, more than 100 sets main production equipments, our production capacity can be 30,000 ton per year.