The **HMS80-24-R** is a high-reliability, industrial-grade AC-DC switching power supply manufactured by **TDK-Lambda**. It is designed for compact spaces and belongs to the HMS series, known for its efficiency and durability. --- ### ## Technical Specifications The following table highlights the core electrical characteristics of the HMS80-24-R: | Parameter | Specification | | :--- | :--- | | **Input Voltage Range** | 85 - 265 VAC (Universal Input) | | **Output Voltage** | 24V DC | | **Output Current** | 3.4 A | | **Rated Power** | 81.6 Watts | | **Efficiency** | ~85-88% | | **Operating Temperature** | -20°C to +70°C (with derating) | | **Mounting Type** | Chassis Mount | | **Safety Certifications** | UL60950-1, CSA C22.2, EN60950-1 | --- ### ### Key Electronic Features 1. **Overcurrent Protection (OCP):** It features a constant current limiting circuit with automatic recovery. If the load exceeds the rated current, the unit limits the output to prevent internal damage. 2. **Overvoltage Protection (OVP):** If the internal circuitry fails and the voltage spikes above approximately 115-135% of the rated output, the power supply shuts down to protect the connected equipment. 3. **Low Profile Design:** The "HMS" series is specifically engineered to be "1U" compatible (approximately 37mm in height), making it ideal for rack-mounted equipment. 4. **Electromagnetic Interference (EMI):** It complies with EN55011/EN55022-B and FCC-B standards, meaning it produces very low electronic noise, which is critical for sensitive measuring instruments. --- ### ### Terminal Configuration The device typically uses a screw-terminal interface for secure connections in high-vibration environments: * **L, N, FG:** AC Input (Line, Neutral, Frame Ground). * **-V, +V:** DC Output terminals. * **V.ADJ:** A small potentiometer located on the front panel that allows for fine-tuning the output voltage (usually ±10%). ---