Power Circuit Voltage Switching for Accelerated Aging Tests
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Solution Overview
Problem
Electronic products often exhibit instability and high failure rates upon delivery due to inconsistent components, leading to customer complaints and quality issues.
Innovation Solution
A power circuit that includes a first voltage output circuit for normal operating voltage, a second voltage output circuit for aging voltage greater than the normal voltage, a controller to store a preset failure rate curve, and a switch control circuit to switch between the two voltages based on the curve, accelerating the aging process to stabilize products before shipment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If each component is tested during production and products are operated to be detected after completion, then the testing process is simple and direct, but the products exhibit high failure rates and instability after delivery due to component inconsistencies
Solution Approach 1:
The patent applies preliminary action by implementing an aging test system that subjects electronic products to accelerated stress conditions before delivery. The system includes a power circuit with multiple voltage output circuits (normal voltage, aging voltage, and intermediate voltage) that pre-stress the product components to expose potential failures early. This preliminary stress testing ensures that products with inconsistent components are identified and eliminated before reaching customers, thereby improving post-delivery reliability without requiring complex post-delivery monitoring systems
Solution Approach 2:
The patent utilizes parameter changes by dynamically adjusting voltage parameters during the aging test process. The controller switches between different voltage output circuits based on test requirements: normal operating voltage for standard functionality testing, intermediate voltage for moderate stress testing, and elevated aging voltage for accelerated stress testing. This parameter variation approach allows the system to comprehensively evaluate component consistency under different operating conditions, improving product stability without adding complex physical test equipment
2Productivity
If aging voltage greater than normal operating voltage is applied to accelerate the aging process, then the aging speed increases and defective units are identified earlier, but the voltage stress on components increases
Solution Approach 1:
The patent applies dynamics by implementing a dynamic voltage switching mechanism that adapts the voltage level during the aging test process. The system includes multiple voltage output circuits (normal voltage circuit, intermediate voltage circuit, and aging voltage circuit) that are switched based on test progress and component response. The controller dynamically adjusts between these voltage levels, allowing the system to apply higher voltage stress when components show good tolerance while reducing voltage when stress signs appear. This dynamic approach accelerates the aging process and identifies defective units faster while preventing excessive voltage stress that could permanently damage components
Solution Approach 2:
The patent utilizes periodic action by implementing cyclic voltage switching between different output circuits during the aging test. The controller periodically switches between normal voltage, intermediate voltage, and aging voltage circuits in a controlled sequence. This periodic voltage variation allows the system to apply accelerated stress intermittently rather than continuously, enabling faster identification of defective components while providing recovery periods that prevent permanent damage. The periodic action pattern balances productivity enhancement with component protection
Data Source
AI summary
A power circuit and a testing device are provided. A first voltage output circuit of the power circuit provides normal working voltage to electronic device, and a second voltage output circuit provides aging voltage to electronic device. The aging voltage is greater than the normal working voltage, and a controller stores a preset failure rate curve of an electronic device and controls switching of output voltages of the first voltage output circuit and the second voltage output circuit according to the preset failure rate curve.