The **GS160A12-R7B** is a high-reliability, industrial-grade AC-to-DC desktop power supply manufactured by **MEAN WELL**. It belongs to the GS160 series, designed specifically for energy efficiency and high wattage output in a compact form factor. ### 1. Technical Specifications Table | Feature | Specification | | :--- | :--- | | **Output Voltage** | 12V DC | | **Output Current** | 11.5A | | **Rated Power** | 138W (Maximum) | | **Input Voltage Range** | 85 ~ 264VAC / 120 ~ 370VDC | | **Connector Type** | DIN 4-Pin with lock (R7B type) | | **Energy Efficiency** | Level VI / CoC Tier 2 | | **Protection** | Short circuit / Overload / Over voltage / Over temp | | **Safety Standards** | UL62368-1, TUV EN62368-1, BSMI CNS14336 | --- ### 2. Key Electronic Components & Features #### A. Power Conversion Topology The unit utilizes a high-efficiency switching mode power supply (SMPS) design. It typically includes: * **Active PFC (Power Factor Correction):** Built-in active PFC circuit (PF > 0.94) to reduce harmonic current and improve energy efficiency. * **PWM Control:** Precise pulse-width modulation to maintain a steady 12V output despite fluctuations in load or input voltage. #### B. Connection Interface (R7B) The suffix **R7B** refers to the specific output connector: * It is a **Power DIN 4-Pin** connector with a locking mechanism. * **Pin Assignment:** Typically, Pins 1 & 2 are Positive (+V), and Pins 3 & 4 are Negative (-V). * *Note:* Always verify the polarity of your device before connecting, as the shell is usually connected to the system ground. #### C. Thermal & Safety Management * **Fanless Design:** The electronics are cooled via free air convection. The internal components are rated for high temperatures to ensure longevity without a mechanical fan. * **LED Indicator:** A simple green LED on the chassis provides a visual status of "Power On." * **Leakage Current:** Extremely low leakage current (<100µA), making it safer for various sensitive electronic environments. --- ### 3. Pinout Diagram (Typical R7B) ```text 4-Pin Power DIN (Front View) [ -- ] / 1 2 \ | | \ 3 4 / ------- Pin 1, 2: +V (12V) Pin 3, 4: -V (GND) ``` --- ### 4. Application Areas Because of its high current (11.5A) and 12V output, this part is commonly used for: 1. **Industrial Equipment:** High-end sensors, PLCs, and small motor controllers. 2. **Networking:** High-power PoE injectors, routers, and switches. 3. **POS Systems:** All-in-one touch terminals and label printers. 4. **Telecom:** Base station peripherals and communications hardware.