Liebert Emerson 02-790821-10 REV.2 P/L3 DC Regulator PCB Assembly

This DC Regulator PCB Assembly is a precision power regulation and control module used in Liebert / Emerson Network Power UPS and DC power systems. It manages voltage stabilization, current regulation, and fault protection for DC output circuits, ensuring reliable performance under variable load conditions. Technical Description: Manufacturer: Liebert / Emerson Network Power Model / Part Number: 02-790821-10 Revision: 2 Type: P/L3 DC Regulator PCB Assembly Function: Regulates and stabilizes DC voltage and current in power supply or UPS systems Main Components: • Multiple power transistors and op-amps for analog regulation loops • Precision resistors and zener diodes for reference control • Several small-signal diodes for feedback rectification and protection • Isolation components for control signal separation Voltage Regulation Range: Typically 0–60VDC (system dependent) Current Capacity: Approx. 5–10A regulation control channel (depending on UPS rating) Input Control: ±12V to ±15V analog signals for feedback and command Output Type: DC stabilized voltage reference and drive signals Connectors: • Edge connectors (two) for system backplane interface • Test points for voltage calibration and monitoring PCB Material: FR4 epoxy laminate, double-sided with solder mask Mounting: Subchassis or card rack insertion (via edge connectors) Dimensions (approx.): 200 mm (L) × 100 mm (W) Operating Temperature: 0°C to +70°C Applications: • Liebert UPS DC bus regulation • Power supply stabilization and current limit control • Interface between rectifier and inverter modules • System protection and voltage feedback loop control Compliance: UL Recognized, CE Certified Please review pictures carefully and let us know if you have any questions!