When operating power supplies in parallel to increase capacity, please observe the following precautions to ensure safety and stable performance:
- Reverse Current Protection: Insert a blocking diode in series with the output of each unit. This prevents reverse current from flowing into a power supply if it is turned off or has a lower output voltage than the others.
- Wiring Configuration: Connect each power supply individually to a single common point at the load (Star Connection). This minimizes differences in wiring impedance and voltage drop.
- Current Balancing: Simply wiring in parallel may not guarantee equal current sharing due to slight voltage differences between units. If your power supply supports Master/Slave operation, use this mode to ensure balanced output control.
Optimal connection methods may vary depending on the specific model and load characteristics. Please contact us for detailed advice tailored to your application.
Tech Tips: A Guide to Using DC Power Supplies Correctly and Safely