The **RWS1000B-24-R** is a high-performance, industrial-grade AC-DC power supply manufactured by TDK-Lambda. It is part of the RWS-B series, designed for high reliability and compact efficiency. --- ### ## Technical Specifications Overview The "24" in the model name indicates a **24V DC output**, while the "1000" signifies a **1000W** power rating. The suffix "-R" specifically denotes the **Remote On/Off** functionality. | Feature | Specification | | :--- | :--- | | **Input Voltage** | 85 - 265 VAC (Universal Input) | | **Output Voltage** | 24V DC | | **Output Current** | 42A | | **Maximum Power** | 1008W | | **Efficiency** | ~88% at 230VAC | | **Cooling** | Internal Force-Air Fan | | **Mounting** | Chassis Mount | --- ### ## Key Electronic Components & Functions The internal circuitry is divided into several critical stages that ensure stable power delivery: #### 1. Input Protection & EMI Filter * **Varistors/Surge Protectors:** Protect the unit from voltage spikes on the AC line. * **EMI Filter:** Uses a combination of X/Y capacitors and common-mode chokes to reduce electromagnetic interference, ensuring compliance with EN55011/EN55022 standards. #### 2. Power Factor Correction (PFC) * **Active PFC Circuit:** Includes a boost converter that ensures the current waveform matches the voltage waveform. This improves efficiency and reduces harmonic distortion (typically achieving a Power Factor of 0.95 or higher). #### 3. DC-DC Converter (Switching Stage) * **MOSFETs/IGBTs:** High-speed switching transistors convert the high-voltage DC (from the PFC stage) into high-frequency AC. * **Transformer:** Provides galvanic isolation between the input and output while stepping down the voltage. #### 4. Output Rectification & Smoothing * **Schottky Diodes/Synchronous Rectifiers:** Convert the high-frequency AC back to low-voltage DC. * **Electrolytic Capacitors:** Large, high-temperature capacitors filter the ripple to provide a clean 24V DC signal. --- ### ## Specific Features of the "-R" Model The **-R option** adds specific electronic interface components for system integration: * **Remote On/Off Circuitry:** An isolated opto-coupler circuit that allows an external signal (5-12V) to enable or disable the power supply output without cutting the AC main power. * **Remote Sensing:** Compensates for voltage drops across long load wires by sensing the voltage directly at the load. --- ### ## Protection Circuits To prevent damage to the connected electronics, the RWS1000B-24-R includes: * **Over Current Protection (OCP):** Constant current limiting with automatic recovery. * **Over Voltage Protection (OVP):** Shuts down the unit if output exceeds ~120% of nominal voltage. * **Over Temperature Protection (OTP):** Thermal sensors shut down the unit if internal heat exceeds safe thresholds.