The **HSP-1F-R** is a high-performance, single-phase AC power line filter manufactured by companies like **Delta Electronics** or **Okaya**. These components are designed to suppress electromagnetic interference (EMI) and radio frequency interference (RFI) in sensitive electronic equipment. --- ### 1. Key Technical Specifications Below are the typical electronic characteristics of the HSP-1F-R series: | Feature | Specification | | :--- | :--- | | **Rated Voltage** | 125V / 250V AC | | **Rated Current** | 1A (Typical for the '1' designation) | | **Operating Frequency** | 50/60 Hz | | **Leakage Current** | 0.5mA max @ 250VAC | | **Test Voltage (Hi-Pot)** | 1450V DC (Line to Line), 2250V DC (Line to Ground) | | **Operating Temp** | -25°C to +85°C | --- ### 2. Internal Electronic Components The device is a passive network consisting of several internal stages to filter out noise: * **X-Capacitors (Line-to-Line):** These suppress "differential mode" noise (interference between the hot and neutral wires). * **Y-Capacitors (Line-to-Ground):** These suppress "common mode" noise (interference appearing on both lines with respect to earth ground). * **Common Mode Choke:** An inductor with two windings on a single core. It provides high impedance to common-mode signals while allowing the power current to pass freely. * **Bleeder Resistor:** Often included to discharge the capacitors when power is removed for safety. --- ### 3. Application and Usage The HSP-1F-R is used primarily to ensure compliance with international EMI standards (like FCC or CISPR). Common applications include: 1. **Switching Power Supplies:** Reducing the high-frequency switching noise fed back into the grid. 2. **Medical Equipment:** Protecting sensitive diagnostic tools from power line fluctuations. 3. **Industrial Automation:** Preventing data corruption in PLC controllers caused by motor spikes. 4. **Office Equipment:** Ensuring printers and computers do not interfere with nearby wireless devices. ### 4. Wiring Diagram Representation ```text LINE LOAD [ L ]-----------( Choke )-----------[ L' ] | | [Cx] [Cy] | |-------[ Gnd ] [Cx] [Cy] | | [ N ]-----------( Choke )-----------[ N' ] ``` ---