The **PJA150F-36-R** is a high-quality, AC-DC enclosed switching power supply manufactured by **Cosel**, a leader in power conversion technology. This specific model is part of the PJA series, known for its cost-effectiveness and compact design. --- ### 1. Technical Specifications Table | Parameter | Specification | Details | | :--- | :--- | :--- | | **Output Voltage** | 36V DC | Adjustable range: 32.4V to 39.6V | | **Output Current** | 4.3A | Maximum continuous current | | **Rated Power** | 154.8W | Total output capacity | | **Input Voltage** | AC 85 - 264V | Universal input (1-phase) | | **Efficiency** | 89% Typical | Measured at 230V AC | | **Operating Temp** | -20 to +70 °C | Derating applies above 50°C | | **Cooling Method** | Convection | No internal fan required | --- ### 2. Key Electronic Components & Features The "R" suffix and the internal circuitry of this unit highlight several specific electronic characteristics: #### A. The "-R" Suffix (Remote Control) The **-R** in the model name indicates that this unit includes a **Remote ON/OFF** circuit. * **Function:** Allows the user to turn the output voltage on or off using an external signal without disconnecting the AC input. * **Benefit:** Reduces wear on physical switches and allows for automated power management via PLCs or microcontrollers. #### B. Circuit Protections The internal PCB is equipped with several protection layers to safeguard both the power supply and the connected load: * **Overcurrent Protection:** Automatically recovers once the fault condition is removed. * **Overvoltage Protection:** Shuts down the unit if the output exceeds 115%–135% of the rated voltage. * **Inrush Current Limiting:** Uses internal thermistors/resistors to prevent high current spikes when the unit is first plugged in. #### C. EMI/EMC Filtering The input stage contains a robust **EMI Filter** (LC circuit) to comply with FCC Part 15 and EN55022 Class B standards, ensuring the device does not interfere with other sensitive electronics on the same grid. --- ### 3. Physical Layout & Terminals The unit is housed in a rugged metal enclosure with the following terminal configuration: 1. **AC (L) / AC (N):** Main power input. 2. **FG:** Frame Ground (Safety). 3. **-V / +V:** DC Output terminals. 4. **V.ADJ:** A potentiometer used to manually fine-tune the 36V output. 5. **Remote Connector:** Specific pins for the remote control signal. --- ### 4. Common Applications * **Industrial Automation:** Powering 36V DC motors or actuators. * **LED Lighting:** Used for high-voltage LED strips or signage. * **Communication Equipment:** Providing stable DC power for networking hardware.