Active Member
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[China]
Address: No.10 DongKeng KeJi Road, DongKeng Town, Dongguan City, Guangdong Province
Contact name:Wendy
Dongguan Hezhi Hardware Co., Ltd. |
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Qi Wireless Double Coil For Universal Mobile Phone, Induction Air Coil
The square wave output by the active crystal oscillator of the wireless charging coil is filtered by the second-order low-pass filter to obtain the calm sinusoidal wave output, which is then output to the coil and capacitor formed by the class C extended circuit composed of the Sancomparator 13003 and its surrounding circuit and radiates in the joint resonance circuit to supply energy to the receiving department.
The design tradeoff factors of receiving coil size include coil wire diameter, shielding layer size and thickness. Coil DC resistance can reduce receiver efficiency. Receiver coil design requires the exact number of turns in order to obtain the desired inductance. Because the coupling coefficient is reduced, the inductance required for message security will be lower than the large coil. The number of turns increases and the wire diameter decreases in order to lower the inductance value in a larger space. The combined effect of thicker wires and more and more turns forces the DC resistance higher and the efficiency lower. The shield provides a high impedance flux path and increases the inductance of the coil.
In addition, the shield prevents AC electromagnetic fields from entering the metal surrounding the battery and receiver. Smaller and thinner shields are worse, and the physical limitations of transmitter coil designs are more difficult because thicker shields risk encountering low-flux field stability. The coil can get smaller and smaller, and its inductance can get higher and higher
| Material | Enameled Wire | |
| Litiz Wire | ||
| or as your requirments | ||
| OEM&ODM | Shaped | Circled,Retangular or as required |
| Lead Length | Custom (about 100mm) | |
| Application | HD headset, security, mobile communication, computer hard drive, computer peripherals, new wireless mouse, aviation, power, car, anti-theft, camera, camera, many household appliances. | |
| Wire diameter Range | 0.025-0.6mm | |
| Design | According to your drawing or sample | |
| Lead Time of samples | About 5-7days | |
Dongguan Hezhi Hardware Co., Ltd. is located in Dongkeng Town, Dongguan City, Guangdong Province, China. We are a worldwide import and export trading company.We belong to a group of companies established in the early 20th century.Our company is a spring factory specializing in R&D design, amnufacturer and sales, introduced equipment technology and hired senior engineers with more ten years of experience to highly cooperate with various customized ODM and OEM products.
It is a hardware factory specializing in R&D design, manufacture and sales of precision components. The company introduces advanced equipment and production technology from Taiwan and abroad, adopts CNC high-precision computer machine, compression spring machine and other mechanical equipment, and employs senior engineers with more than ten years of work experience to debug mechanical equipment and customize production. With the business philosophy of honesty, pragmatism and excellence.
Hezhi Company is dedicated to serving customers at home and abroad. We hope that the products of Hezhi will help your business to be more brilliant, let us build a bright future in the high-tech era!
The testimony is pragmatic and the attitude of the people. Quality
service is the pursuit of the people!"
* Inquiry and consulting support.
* Sample testing support.
* View our Factory.
* Training how to instal the machine, training how to use the
machine.
* Engineers available to service machinery overseas.
We are a worldwide import and export trading company.We belong to a group of companies established in the early 20th century.Our company is a spring factory specializing in R&D design, amnufacturer and sales, introduced equipment technology and hired senior engineers with more ten years of experience to highly cooperate with various customized ODM and OEM products.
2. Small order quantity is 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 management system and expertly trained technical personnel.
3. Committed to high quality production
To keep HeZhi Springs 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.
4. Efficiency in manufacturing
Our company's machinery and equipment are controlled by CNC
computers. In order to respond to international needs and
standards, we continuously update and upgrade our equipment every
year. Our machines effectively increase production capacity and
save on manufacturing costs. The manufacturing department is the
most important core of the whole company and by treating it with
utmost importance, we reap great benefits in manufacturing
efficiency.
5. Do you provide samples? Is it free or extra?
We can provide free samples when we have them in stock, but you
have to pay the freight.
6. Excellent customization services
HeZhi's R&D team designs and completes customized products
according to the needs of customers. From the selection of
materials to the function of the products, we can design and
develop products to suite different customers' requirements. We are
constantly involving ourselves in all aspects of the industry
because only by having a complete view and analysis of the
industry, can there be innovative breakthroughs.
7. Payment term
*T/T : 30% pre T/T, 70% before delivery.
*Trade Assurance
8. Service
*Delivery on time.
*Shipped by a convenient and cost-effective way.
*Good after-selling, 24 hours service for you.
9. Packing
*A: Poly bag, Plstic tray ,small box, carton.
*B: According to customers' requirements.
10. Delivery
*Sample: 7-10 days after deposit received.
*Batch goods: 12-15 days after samples approved.
11. What shipping ways our use?
We will use UPS, DHL or TNT to ship the products. If your goods are
very heavy or bulky, we will choose sea transportation.
