Toroidal transformer step-down transformer 220v 24v auto transformer Audio Amplifier 300W Toroidal Transformer

*All specifications can be customized.


Differet Series of Toroidal Choke Inductor

Double loop superimposed 0.45mh horizontal FeSi al ring high power magnetic ring inductor

Inductance:0.45mH
Rated current: 20 mA
Inductive reactance XL: 23 (Ω)
Distributed capacitance 99(F)

Advantage: 
1. High saturation magnetic induction;
2. Excellent wide frequency characteristics;
3. Extensive permeability adjustment range;
4. Better anti-unbalanced current capability;
5. Excellent temperature stability(high temperature);
6. Low Loss
7. Consistency of Inductance

Application:
1.for 1000-2000W frequency wave power inverter
2. Wind generators
3. Solar inverters
4. Home Application
5. Welding equipment                                                              
6. Frequency converters

Primary Advantage:

1. Professional manufacturer 
2. High quality
3. Low price
4. Fast delivery
5. Good after-sale service
6. Qualified material and competative price
7. RoHS, SGS, CE certification
8. Small Orders Accepted
9. Ultra miniature size and light weight
10. OEM/ ODM available

 

 

What is an air core coil?

We'll use the term 'air core coil' to describe an inductor that does not depend upon a ferromagnetic material to achieve its specified inductance. This covers the cases where there really is just air inside as well as windings upon a different insulator such as bakelite, glass or PTFE etc.

Do you need an air coil?

What are the advantages of an air core coil?

• Its inductance is unaffected by the current it carries. This contrasts with the situation with coils using ferromagnetic cores whose inductance tends to reach a peak at moderate field strengths before dropping towards zero as saturation approaches. Sometimes non-linearity in the magnetization curve can be tolerated; for example in switching converters. In circuits such as audio cross over networks in hi-fi speaker systems you must avoid distortion; then you need an air coil. Most radio transmitters rely on air coils to prevent the production of harmonics.
• Air coils are also free of the 'iron losses' which affect ferromagnetic cores. As frequency is increased this advantage becomes progressively more important. You obtain better Q-factor, greater efficiency, greater power handling, and less distortion.
• Lastly, air coils can be designed to perform at frequencies as high as 1 Ghz. Most ferromagnetic cores tend to be rather lossy above 100 MHz.

And the 'downside'?

• Without a high permeability core you must have more and/or larger turns to achieve a given inductance value. More turns means larger coils, lower self-resonance and higher copper loss. At higher frequencies you generally don't need high inductance, so this is then less of a problem.
• Greater stray field radiation and pickup. With the closed magnetic paths used in cored inductors radiation is much less serious. As the diameter increases towards a wavelength (lambda = c / f), loss due to electromagnetic radiation will become significant. Balanis has the gory details. You may be able to reduce this problem by enclosing the coil in a screen, or by mounting it at right angles to other coils it may be coupling with.

  You may be using an air cored coil not because you require a circuit element with a specific inductance per se but because your coil is used as a proximity sensor, loop antenna, induction heater, Tesla coil, electromagnet, magnetometer head or deflection yoke etc. Then an external field may be what you want.

 

About Us

Shenzhen Yiyi Technology Co., Ltd. Is located in Gongming, Shenzhen. It is a professional design and manufacturing supplier integrating R&D, design, production and sales of magnetic electronic components such as power transformers, audio transformers, high-frequency transformers, inductors, and various 3C electronic products. Yiyi Technology has a strong and professional R&D team responsible for design and development and more than 10 years of manufacturing experience. Its products include transformer filters, inductors, electronic coils, transformer ballasts and other electronic products. 


The company has passed IS09001-2000 Quality system certification and 14000 environmental safety certification, all products comply with SGS environmental certification standards, our products can be manufactured in accordance with UL, cUL, VDE and CE, and when needed, with accumulated experience and technical force, I am sure To provide customers with high-quality products and a full range of services. Some products have passed the national CQC certification and EU testing and certification products.


Products are widely used in various power communication system equipment, charging piles, automotive inverter power supplies, network monitoring equipment, medical equipment equipment, industrial automation equipment, security intelligent monitoring, LED display screens, luminous lighting systems, engineering lighting systems, and instrumentation. The company has large production bases. The Shenzhen production line occupies an area of 8, 000 square meters, and Longyan, Fujian has 15 automated production lines and multiple automatic winding machines. Complete body and testing equipment. There are more than 300 employees and more than 20 senior engineers. The products adopt high-quality raw materials, mature manufacturing technology and multiple inspection procedures, which provide greater product reliability and provide a strong guarantee for product quality. The company has more than 10 series products, produces more than 200 varieties of series products, and has a daily production capacity of 200, 000 pieces. 




FAQ:

1. Small order quantity workable.
    From the initial sample design of the spring to the mass production of the springs, we can quickly reach your manufacturing goals and immediately provide the best products because we have an excellent production magement system and expertly trained technical personnel.

2. Committed to high quality production.
    To keep Xuanzhi at the forefront of the industry, we have implemented a stringent internal quality control system and regularly import the latest manufacturing equipment and instruments. Through our precise manufacturing technology and expert mold making process, we provide our customers with the best products and service.

3. How to make custom induction coil ?
    Please provide the specification ,the drawing would be the best .

4. What is the leade time for sample?
    Usually it will takes about 3~5 days.

5. What is the lead time for mass production ?
    Is about 7-10 days, depends on the order quantity.

6. Payment term
    T/T: 30% pre T/T, 70% before delivery.

PS:

Customization, tell us the demand parameters, design drawing or material requirements, product inductance coil number than leakage inductance angle bitmap, withstand voltage input and output voltage and other details, we can customize according to the requirements, please contact before payment, we implement the principle of large quantity first!

Please confirm before placing an order, the quantity is different and the price is different.

Appreciate for your concered and care.


Welcome to contact us:

Name: Alex

ShenZhen Yiyi Technology Co., LtD

Add: 501, No.11, Lane 1, NanZhuang New Village, XinZhuang Community,