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The  tape wound toroidal core  is close to the perfect magnetic path configuration and allows for the most efficient application of high magnetic conductivity magnetic alloys. The physical and magnetic properties of the ring reveal many features that contribute to this near-perfect circuit. For example, the air gap in the magnetic path is so small that it does not exist. This minimizes loss, edges, leaks, deformations, and reduces the magnetic force required to produce a given flux within the material. In the ring core and coil assembly, the entire magnetic circuit is contained in the electrical winding, further reducing the leakage flux and increasing the coupling of the winding to the winding. The tape wound cores does produce a smaller flux up the axis, but this leakage flux can be suppressed by assembling it into a ring stack at the top and bottom of the core. The tape wound core configuration also provides good self-shielding to resist external magnetic fields. A sin...

The  stylish laptop backpack bag  is made by nylon fabric, it's waterproof and lightweight, it's a  popular computer backpack bag for women . Customized logo is acceptable. Colors choice: For this kind of  women's nylon laptop backpack bag , we have three colors for your choosen, like red wine, royal blue, black, same as the following pictures, you can also custom any colors you'd like if your MOQ reaches 500 pcs per color. Main features: Waterproof:  for our women's laptop backpack bag , we choose the waterproof nylon material as the main fabric. Multifunctional:  the computer backpack bag can be used as a double shoulder bag and also a tote bag. Custom logo:  customized logo is acceptable if your MOQ reaches 500pcs per color. Anti-theft:  the main compartment is closed by double metal zip pullers, and also fixed by metal buckles. Large capacity:  it has many pockets, like front zip pocket, both sides pockets, separated laptop compartment, s...

Transformers often require/use iron cores because they operate on magnetic forces, which are difficult to understand when sharing certain characteristics with good old "electricity" (ohms, volts, amperes, etc.). Let's try some simplified ways to get the overall idea. Start with a screwdriver - just a cylindrical coil. If we let the current flow through, a magnetic field (we call it the H field) is formed. The field depicted with the imagined field line flows up through the center of the coil, then disperses again after leaving the cylinder, then reassesses and re-enters the other end. You've seen the picture in the textbook. The magnetic field is strong and contained inside the cylinder (ID), while the magnetic field strength is weak outside (OD) because it diffuses in space. If the H magnetic field interacts with "anything" around the coil, whether it is vacuum, air or iron, it produces what we call a B magnetic induction field within the "material...

 Lychee is a kind of tropical fruit with strong natural fragrance and sweet taste. Lychee trees mostly found in China, Vietnam, Thailand and Indonesia. However, the crop of Lychee only last for a month in June, and in order to guarantee a stable supply of a year, the fruits are peeled and seeds are removed when processing in tin can with syrup as canned Lychee, and last for 3 years. In order to offer the best quality of goods for different markets, the specification of canned Lychee include light syrup(14-17) for European markets and heavy syrup(Heavy syrup) for south-eastern asian countries. ​ Canned Lychee  is always the best option to go with other fruits in ice cream,custards or as cocktails and desserts,  Lychee iced tea or lemonades are definitely an enjoyment you cannot miss in Summer. ​

 To avoid fraud in small cashless payment field as well as government tax collection system, an android MPOS device to be with fingerprint thumbnail built-in is an idea solution. As today's smart devices, they could do nfc contactless payment, fingerprint authentication as well as QR code payment together to make everything easier and more efficient. Here below is a link to show how it works with fingerprint. As well a video to show how it fast works with NFC as well as QR code. The thermal printer built-in as well to print a receipt as option for clients. Any more questions or interest in the   fingerprint device   to be used in the cashless payment world, pls feel free to get in touch with author and send your inquiries to support@smartfeigete.com

Joyous Manufacturer Medium Durable Rolling Duffel Bag  is a lightweight and medium size for outside traveling.  Quick details 1. Item No.: JO-20105, 2. Size: L26" x W14" x H13" (L66xW36xH33cm), 3. Material: 600x600D oxford polyester fabric, 210D lining inside. You can customize other fabric. 4. MOQ: 500PCS. Features 1.  Solid Telescopic Handle.   Using solid compound metal trolley and hide-away retractable handle. 2.  Plastic Pedestal at The Bottom.  We added the durable plastic pedestal at the right side, when the rolling duffel bag fulled it can stand by itself.  3.  Zippered Pockets.  There are 2 zipper-secured compartments in the front and the back. U-shape top opening for easy access to spacious main compartment pocket. 4.  Handle Straps.  Comfort padded top handle. 5.  Durable wheels.  In-line skate wheel system. 6.  Spacious main compartment.  Travel easily with everything you need with this...

It's a  professional baby diaper nappy bag for mummy , it's very lightweight and portable for mummy to go outside with baby. The front panel is openable, there is a hidden pocket after opening for putting tissue, it's a new design. Basic information of  tote baby diaper nappy bag : Item No.: JO-20095 Size: 23*10*22 cm Material: Nylon + 210D lining Weight: 0.15 kg Printing: sublimation ( heat transfer printing) MOQ: 500 pcs/ color Main features and construction: Waterproof:  we choose waterproof nylon material as the main fabric, which can prevent the  outdoor baby diaper bag  from getting wet in the rainy day. Multifunction:  the small travel baby nappy bag has a PP webbing handle, a detachable and adjustable PP webbing shoulder strap, it's convenient for mummy to use it, it can be used as hand bag or messenger bag. Expandable:  the front panel is openable, there are many organizers in the inner side of the front panel, which is convenient for mummy to...