The **HTS-25-R** is a specific model of an **AC-DC Enclosed Switching Power Supply**. It is designed to convert alternating current (AC) into a regulated direct current (DC) output, commonly used in industrial automation, telecommunications, and electronic equipment. --- ### 1. Key Technical Specifications The following table summarizes the primary electrical characteristics of the HTS-25-R: | Parameter | Specification | | :--- | :--- | | **Model Number** | HTS-25-R | | **Rated Power** | 25 Watts | | **Output Voltage** | 5V DC (typical for HTS-25 series, though variants exist) | | **Input Voltage Range** | 85 ~ 264V AC / 120 ~ 370V DC | | **Efficiency** | ~80% (varies by load) | | **Cooling** | Natural Convection (No fan) | | **Protections** | Overload, Overvoltage, Short Circuit | --- ### 2. Internal Electronic Components The device utilizes several critical electronic parts to manage power conversion and safety: * **Input Filter (EMI/RFI):** Contains X/Y capacitors and common-mode chokes to suppress electromagnetic interference and prevent noise from entering the power grid. * **Bridge Rectifier:** Converts the incoming AC sine wave into a pulsating DC voltage. * **Bulk Capacitor:** A high-voltage electrolytic capacitor that smooths the pulsating DC before it enters the switching stage. * **Switching MOSFET:** A power transistor that "chops" the DC voltage at high frequencies (typically 50kHz to 100kHz) to allow for a smaller transformer size. * **High-Frequency Transformer:** Provides galvanic isolation between the input and output while stepping down the voltage. * **Schottky Diode:** Rectifies the high-frequency AC from the transformer back into DC at the output stage. * **Optocoupler:** Provides feedback from the output to the input controller while maintaining isolation, ensuring the voltage remains stable even as the load changes. --- ### 3. Physical Features & Pinout The HTS-25-R is housed in a ventilated metal enclosure to dissipate heat. It typically features a terminal block for connections: 1. **L (Live):** AC Input Line. 2. **N (Neutral):** AC Input Neutral. 3. **FG (Frame Ground):** Connection to the metal chassis for safety. 4. **-V (COM):** Negative DC output. 5. **+V:** Positive DC output. 6. **V ADJ:** A small potentiometer to fine-tune the output voltage (usually ±10%). --- ### 4. Typical Applications * **LED Lighting:** Providing stable DC power for strips and modules. * **Microcontrollers:** Powering Arduino or Raspberry Pi setups in industrial cabinets. * **Sensors:** Supplying 5V or 12V to industrial proximity or pressure sensors.