The **GS160A20-R7B** is a high-efficiency, industrial-grade AC-to-DC desktop power supply manufactured by **MEAN WELL**. It is part of the GS160 series, known for its reliability and compliance with global energy efficiency standards. ### Technical Specifications Overview | Feature | Specification | | :--- | :--- | | **Output Voltage** | 20V DC | | **Output Current** | 8.0A | | **Rated Power** | 160W | | **Input Voltage Range** | 85 ~ 264VAC (Universal Input) | | **Efficiency** | Up to 92.5% | | **Connector Type** | Power DIN 4-Pin with Lock (R7B) | | **Energy Level** | Level VI (DOE) / ErP Step 2 | --- ### Key Electronic Components & Features #### 1. Input Protection and Filtering * **Active PFC (Power Factor Correction):** The unit includes a built-in active PFC circuit. This improves energy efficiency and reduces harmonic current distortion, ensuring compliance with EN61000-3-2. * **EMI Filtering:** Internal components suppress electromagnetic interference, allowing the device to meet Class B emission standards. #### 2. Protection Circuits The GS160A20-R7B is equipped with several "hiccup mode" or "shut down" protection mechanisms: * **Short Circuit Protection (SCP):** Recovers automatically after the fault condition is removed. * **Overload Protection (OLP):** Limits output current to prevent internal component damage. * **Overvoltage Protection (OVP):** Shuts down the output if the voltage exceeds approximately 110%-140% of the rated voltage. * **Overtemperature Protection (OTP):** Shuts down the unit if internal thermistors detect excessive heat. #### 3. Output Configuration (R7B) The "R7B" suffix refers specifically to the DC output connector: * **Type:** 4-Pin Power DIN (Kycon KPPX-4P equivalent). * **Pin Assignment:** * Pins 1 & 2: Positive (+) * Pins 3 & 4: Negative (-) * **Housing:** The shell of the connector is typically tied to the ground for shielding and safety. #### 4. Thermal Management * **Fanless Design:** The unit uses convection cooling. High-grade electrolytic capacitors rated for high temperatures are used to ensure a long lifespan without the need for a mechanical fan. --- ### Applications Due to its high power density and 20V output, this part is commonly used for: * High-end laptops and docking stations. * Industrial automation equipment. * Telecommunication devices. * 3D printers and CNC peripherals.