The core significance of the power supply aging test conducted by the computer-monitored power supply aging test system lies in simulating long-term working conditions to expose potential problems of power supply products in advance, ensuring product quality and usage safety. This is specifically reflected in the following aspects:
Screening early-failing products: After production, power supplies may have hidden issues such as component process defects and poor soldering. Aging tests can help these problems surface before the products leave the factory, preventing substandard products from entering the market.
Verifying product reliability: By simulating long-term load operation under actual working conditions, the stability and durability of the power supply are tested to ensure it can function normally within its designed lifespan and meet performance specifications.
Ensuring usage safety: Aging tests can identify potential safety hazards such as overheating, short circuits, and insulation failure in advance, preventing accidents like fires and electric shocks when the product is in use by customers.
Optimizing product design: Fault data obtained from aging tests can be used to reverse-engineer and optimize the circuit design and component selection of the power supply, thereby enhancing the overall quality of the product.
List of Key Indicators for Power Supply Aging Test
Output Voltage Indicator ：The measured value should be stably within the allowable deviation range of the designed nominal voltage (for example, the common accuracy of DC power supply is ±5%, ±3%). 。 There is no sudden voltage rise, drop or fluctuation during long-term operation.
Output current index ：The current output is stable under the rated load without obvious fluctuations. The current response during overload/light load switching meets the design requirements, with no abnormal drops or surges.
Ripple and Noise ：The output ripple voltage (peak-to-peak) must be lower than the limit value specified in the product specification (for example, for switching power supplies, it is commonly less than 100 mV). 。 The noise spectrum distribution has no abnormal spikes, avoiding interference with electrical equipment.
Temperature Rise Index：The temperature rise of key components inside the power supply (transformer, capacitor, MOSFET) shall not exceed the design threshold (generally ≤ 40°C). The temperature rise of the casing complies with safety standards, and there is no local overheating that could cause burns.
Efficiency indicators：Under rated load, the power conversion efficiency of the power supply must reach the designed value (for example, consumer power supplies often require >80%), and there should be no significant decrease in efficiency during long-term operation.
Stability and Failure Rate：There were no faults such as system crashes, restarts, or power outages during the aging cycle (e.g., 24/48/72 hours). The proportion of faulty components must be controlled within the product yield standard (e.g., ≤0.5%).
Protection function verification：Overvoltage, overcurrent, short circuit, and over-temperature protection are triggered promptly and return to normal without protection failure or false triggering.
This equipment is of great significance to power supply factories. It is a computer-monitored power supply aging test system and one of the core detection devices in the power supply production process.
Its core functions for power supply factories are as follows:
Quality control: It simulates the "aging" state of power supplies during long-term operation, testing their stability and reliability during continuous operation (such as whether there will be overheating, voltage fluctuations, or faults, etc.), and screening out substandard products to prevent defective products from entering the market.
Performance verification: It can test key indicators such as the actual service life and load capacity of power supplies, helping manufacturers optimize product design or production processes.
Compliance guarantee: Power supply products need to pass safety and performance certifications (such as the previously mentioned IEC 62368), and aging tests are one of the necessary steps in such certifications. Without it, it is difficult to complete the verification of product compliance.
In short, if power supply factories lack such aging test equipment, it is difficult to ensure product quality and meet market entry requirements. Therefore, it is an indispensable device in power supply production.
