USB Power Supply Testing Apparatus with Feedback Voltage Verification
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Solution Overview
Problem
Existing USB type power supply unit testing apparatuses require an additional power source, cannot record output voltage before being powered off, and lack functionality to check if the output voltage matches the selected voltage value, leading to inefficiencies and misjudgments in testing.
Innovation Solution
A power supply unit testing apparatus connected to a power supply unit via a connection port, utilizing a first conversion unit to convert the power source, a control unit to manage voltage, and a memory unit to record voltage values, allowing direct power sourcing and feedback-based verification of output voltage matching, eliminating the need for additional power and enabling efficient testing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If an additional power source is provided to drive the power supply unit testing apparatus, then the testing apparatus can operate, but the usage convenience is reduced and device complexity increases
Solution Approach 1:
The power supply unit under test provides power to the testing apparatus itself through the connection port. The power supply unit's output is fed back to power the control board and other components of the testing apparatus, eliminating the need for an external power source and reducing operational complexity
Solution Approach 2:
The connection port serves dual functions: it both receives power from the power supply unit under test and provides the power needed to operate the testing apparatus. This multi-functionality eliminates the need for separate power sourcing, improving ease of operation
2Productivity
If the power supply unit testing apparatus cannot record output voltage before being powered off, then the system is simpler, but test efficiency decreases due to reconfiguration time
Solution Approach 1:
The control board records the output voltage value before the power supply unit is powered off. This preliminary recording action ensures that when testing resumes with a different input voltage, the previously recorded voltage can be quickly restored without manual reconfiguration, significantly reducing test time and improving efficiency
3Measurement precision
If the power supply unit testing apparatus cannot determine if output matches selected voltage value, then the device is simpler, but measurement precision and reliability decrease
Solution Approach 1:
The control board compares the actual output voltage of the power supply unit with the selected voltage value through a feedback mechanism. This verification process ensures accurate measurement of output voltage matching, improving measurement precision while the control board integrates this function without significantly increasing overall device complexity
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution allows for efficient testing without additional power sources, records output voltage for seamless transitions between tests, and ensures accurate verification of output voltage, reducing test time and improving efficiency.
Implementation Method 1
a first conversion unit, and a control unit. The connection port receives a power supply from the power supply unit. The first conversion unit is connected to the connection port, and converts a power source of the power supply to an input voltage
Data Source
AI summary
A testing apparatus is used for testing a USB type power supply unit connected to a power supply unit and includes: a connection port receiving a power supply from the power supply unit; a first conversion unit connected to the connection port and converting the power supply to an input voltage; a control unit connected to the connection port and the first conversion unit and receiving the input voltage; a plurality of switch units connected to the control unit. The control unit obtains the number of voltage values of the power supply according to power supply information by the power supply unit; the number of voltage values of the power supply is the number of different voltage values that the power supply can support, and each voltage value corresponds to the switch units.