Power Extending Board Parallel Cable Current Distribution
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Solution Overview
Problem
The existing power supply systems for testing electronic devices face issues where excessive current through a single cable can cause it to melt due to the high power consumption by the motherboard, hindering effective testing.
Innovation Solution
A power supply system incorporating a power extending board that receives and distributes four identical driving voltages and currents via parallel paths, allowing the power load board to adjust and supply a combined voltage and current to the motherboard, thereby reducing the current through each cable and preventing overheating.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single cable is used to transmit power from the power supply to the motherboard, then the power supply system is simple, but the cable may melt due to excessive current
Solution Approach 1:
The patent divides the single power transmission path into multiple parallel cables. The power supply board includes multiple output terminals connected to multiple cables, which are then connected to multiple input terminals on the power load board. This segmentation distributes the total current across multiple cables, preventing any single cable from carrying excessive current that would cause melting.
2Reliability
If multiple parallel transmitting paths are used to reduce current per cable, then cable safety is improved, but device complexity increases
Solution Approach 1:
The power load board includes a control circuit that can selectively control the connection states of multiple transmitting paths. This multi-functional capability allows the system to adapt to different power requirements by activating only the necessary number of cables, thereby managing complexity while maintaining safety. The control circuit can adjust the number of active transmitting paths based on the power consumption needs of the motherboard.
Data Source
AI summary
A power supply system includes a power source and a power extending board detachably connected between the power source and an electronic device. The power source includes at least two outputs. The power extending board includes at least two first transmitting terminals and a second transmitting terminal connected to the two first transmitting terminals. Each of the two outputs transmits a first driving voltage from the power source to the second transmitting terminal via a corresponding first transmitting terminal. The first driving voltages from the power source are identical to each other. The second transmitting terminal transmits a second driving voltage to the electronic device. The second driving voltage is identical to each of the first driving voltages.