The **FYCL-R15A1** is a specific model of an **Electronic Load** module, often used in power supply testing, battery capacity analysis, and laboratory research. It acts as a controllable resistor that simulates various types of electrical loads. --- ### 1. Key Technical Specifications The following table outlines the core electronic parameters of the FYCL-R15A1: | Parameter | Specification | | :--- | :--- | | **Model** | FYCL-R15A1 | | **Max Voltage** | 150V DC | | **Max Current** | 20A | | **Max Power Capacity** | 150W | | **Interface Types** | USB (Micro/Type-C), DC Power Jack, Terminal Blocks | | **Display Type** | LCD with backlight | | **Cooling Method** | Intelligent Temperature-Controlled Fan | --- ### 2. Core Electronic Components The internal circuitry consists of several critical stages to ensure precise measurement and heat dissipation: #### A. Power Dissipation Stage * **Power MOSFETs:** These are the primary components that handle the load. They act as "variable valves" to regulate current flow based on the user's settings. * **Heat Sink & Fan:** Because 150W generates significant heat, a large aluminum heatsink and a high-RPM fan are used to prevent thermal runaway. #### B. Measurement & Control * **Microcontroller (MCU):** The "brain" that monitors voltage/current sensors and adjusts the MOSFET gates to maintain constant current (CC), constant voltage (CV), or constant power (CP). * **Shunt Resistor:** A high-precision, low-resistance component used to measure current through voltage drop (Ohm's Law). #### C. Connectivity Ports * **Input Terminals:** Heavy-duty screw terminals for high-current connections. * **Communication Interface:** Often features a serial-to-USB chip allowing PC software to log data and plot discharge curves. --- ### 3. Functional Modes The electronic logic of the FYCL-R15A1 allows it to operate in four primary electronic modes: 1. **CC (Constant Current):** The module draws a fixed amount of Amps regardless of voltage fluctuations. 2. **CV (Constant Voltage):** The module adjusts current to maintain a specific voltage across the source. 3. **CR (Constant Resistance):** Simulates a fixed resistor value. 4. **CP (Constant Power):** Adjusts current dynamically to keep total wattage (V × I) stable. --- ### 4. Safety Protections The onboard electronics include several "failsafe" features: * **OVP (Over Voltage Protection):** Cuts off if the input exceeds 150V. * **OCP (Over Current Protection):** Cuts off if current exceeds 20A. * **OPP (Over Power Protection):** Limits the load to 150W to prevent MOSFET burnout. * **OTP (Over Temperature Protection):** Shuts down if the heatsink temperature exceeds a safe threshold (usually 80°C).