The **W2AC-AD3B-R** is a specific part number typically associated with **IEI Integration Corp**, commonly used as an industrial-grade AC-to-DC power adapter or internal power module for embedded systems and industrial PCs. Below is a breakdown of its technical specifications and electronic characteristics. --- ### 1. Key Technical Specifications | Feature | Specification | | :--- | :--- | | **Input Voltage** | 90V ~ 264V AC | | **Input Frequency** | 47Hz ~ 63Hz | | **Output Voltage** | +12V DC (Standard) | | **Power Rating** | Approximately 36W - 60W (Varies by revision) | | **Efficiency** | >85% (Typical) | | **Connector Type** | 3-pin or 4-pin DIN / Barrel Jack (Application dependent) | | **Operating Temp** | 0°C to +40°C | --- ### 2. Electronic Components & Protection The "AD" series usually integrates high-quality switching components designed for 24/7 operation in industrial environments. * **Switching Regulator:** Utilizes Pulse Width Modulation (PWM) to maintain a stable 12V output despite fluctuations in the AC input. * **Protection Circuitry:** * **OVP (Over Voltage Protection):** Shuts down the unit if output exceeds safe thresholds. * **OCP (Over Current Protection):** Prevents damage during a short circuit or device malfunction. * **OTP (Over Temperature Protection):** Thermal sensors throttle or cut power if the unit overheats. * **Filtering:** Features internal EMI filters to reduce electromagnetic interference, ensuring compliance with FCC/CE industrial standards. --- ### 3. Pinout and Physical Characteristics Industrial power adapters like the W2AC-AD3B-R often use standardized connectors to ensure secure vibration-resistant links. ```text Typical 4-Pin Assignment (Common in IEI Units): Pin 1: +12V DC Pin 2: +12V DC Pin 3: GND Pin 4: GND ``` --- ### 4. Compatibility This part is primarily designed for: 1. **Industrial Workstations:** Powering IEI AFL or PPC series panels. 2. **Embedded Box PCs:** Providing stable DC power to fanless systems. 3. **Replacement Parts:** Often used to replace failed external "power bricks" in legacy industrial setups.