2015 Hot sales Tag Inductance Coil GEB292

plastic tray and carton box

>>>   Why choose us ?  

The advantages of our company are as follows:

1. Goldeneagle has 25years experience in inductor coil manufacturing.  
2. As the biggest coil supplier of international famoust brand hearing aid.
3. Goldeneagle is a market leader in precision inductor coil manufacturing.
    (we can make self-bonding air coils from 2mm-300mm,which other suppliers can not achieve)   
4. Goldeneagle offers top quality and stable performance coils.  
5. With most advanced full automatic winding machine.( NITTOKU)   
6. With 18 kinds of performance inspection & test measures contribute to

    top-ranking quality:European and American customer satisfaction above 92% 

  >>> Production Process <<<

>>> Working Principle <<<

1.A radio-frequency identification system uses tags, or labels attached to the objects to be identified. Two-way radio transmitter-receivers called interrogators or readers send a signal to the tag and read its response.

RFID tags can be either passive, active or battery-assisted passive. An active tag has an on-board battery and periodically transmits its ID signal. A battery-assisted passive (BAP) has a small battery on board and is activated when in the presence of an RFID reader. A passive tag is cheaper and smaller because it has no battery. However, to start operation of passive tags, they must be illuminated with a power level roughly three magnitudes stronger than for signal transmission. That makes a difference in interference and in exposure to radiation.

2.Tags may either be read-only, having a factory-assigned serial number that is used as a key into a database, or may be read/write, where object-specific data can be written into the tag by the system user. Field programmable tags may be write-once, read-multiple; "blank" tags may be written with an electronic product code by the user. A tag with no inherent identity is always threatened to get manipulated.

3.RFID tags contain at least two parts: an integrated circuit for storing and processing information, modulating and demodulating a radio-frequency (RF) signal, collecting DC power from the incident reader signal, and other specialized functions; and an antenna for receiving and transmitting the signal. The tag information is stored in a non-volatile memory. The RFID tag includes either a chip-wired logic or a programmed or programmable data processor for processing the transmission and sensor data, respectively.

4.An RFID reader transmits an encoded radio signal to interrogate the tag. The RFID tag receives the message and then responds with its identification and other information. This may be only a unique tag serial number, or may be product-related information such as a stock number, lot or batch number, production date, or other specific information.