The **WCT-514-R** is a specific electronic component, typically categorized as a **Wireless Charging Transmitter (Coil)** assembly. These modules are designed to facilitate inductive power transfer according to Qi or proprietary standards. --- ## 1. Core Specifications The WCT-514-R is generally defined by its physical construction and electrical characteristics optimized for wireless power transmission. | Parameter | Typical Value / Description | | :--- | :--- | | **Component Type** | Wireless Charging Transmitter Coil | | **Inductance** | Usually ranges between 6.3µH to 24µH (model dependent) | | **DC Resistance (DCR)** | Low (typically < 100 mΩ) to minimize heat loss | | **Shielding** | Ferrite Plate (to direct magnetic flux and protect circuitry) | | **Wire Type** | Litz Wire (to reduce skin effect at high frequencies) | --- ## 2. Key Electronic Components & Construction The assembly consists of several critical layers that work together to create an electromagnetic field: ### A. The Coil (Inductor) The primary element is a spiral of **Litz wire**. Litz wire consists of multiple thin strands insulated from each other, which reduces power loss caused by the "skin effect" at the high frequencies (110–205 kHz) used in wireless charging. ### B. Ferrite Shielding The coil is mounted on a **ferrite sheet**. This serves two purposes: 1. **Flux Concentration:** It focuses the magnetic field towards the receiver (mobile device) rather than allowing it to dissipate behind the coil. 2. **EMI Suppression:** It protects the underlying electronics from interference and prevents eddy currents from heating up nearby metal objects. ### C. Adhesive / Mounting The "R" suffix often denotes a specific mounting style or RoHS compliance. Most WCT units feature a pressure-sensitive adhesive (PSA) on the back for easy installation into a plastic housing. --- ## 3. Operating Principle The WCT-514-R functions as the "Primary" side of a transformer: 1. **AC Input:** High-frequency alternating current is sent from the PCB driver to the coil. 2. **Magnetic Field:** The coil generates an oscillating magnetic field. 3. **Inductive Coupling:** When a receiver coil (in a smartphone) is placed nearby, the magnetic field induces a current in that secondary coil. 4. **Feedback:** The system monitors the load to ensure efficient power transfer and safety (Foreign Object Detection). --- ## 4. Typical Applications * **Qi-Compliant Charging Pads:** Desktop wireless chargers. * **Automotive Consoles:** Integrated charging docks in vehicles. * **Industrial Handhelds:** Waterproof charging for rugged devices.