Power Supply Circuit with Current Direction Detection for Photo Frames
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Solution Overview
Problem
Users face difficulties in correctly connecting electronic photo frames in series or parallel due to confusion over positive and negative power lines, and arranging frames with different shapes and orientations in a simple and fast manner.
Innovation Solution
An electronic photo frame system with power terminals, bridge rectifiers, a detector, and a power supply circuit that allows random power terminals to be connected to an external power line, automatically detecting current directions to control power output between terminals, and includes a method to detect short circuits.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If users connect electronic photo frames in series or parallel, then power distribution is achieved, but users must identify and correctly route positive and negative power lines which causes confusion and increases connection difficulty
Solution Approach 1:
The system automatically detects current directions and controls power supply circuit output without requiring user identification of positive/negative terminals. The detector detects current directions flowing through power terminals, and the power supply circuit automatically adjusts output based on detected directions, making the system self-configuring and eliminating the need for users to understand polarities.
Solution Approach 2:
The patent replaces manual identification and routing of power lines with an automated detection and control system. Instead of relying on users to mechanically identify and connect positive/negative lines correctly, the system uses electrical detection of current directions and automated circuit control to achieve proper power distribution.
2Adaptability or versatility
If electronic photo frames are arranged in different shapes and orientations, then flexibility in arrangement is improved, but correct connection becomes more difficult and time-consuming
Solution Approach 1:
The system automatically adapts to different connection configurations by detecting current directions and self-adjusting power supply output. Whether frames are arranged in series, parallel, or mixed configurations with different orientations, the detector identifies current flow directions and the control system automatically configures power distribution, eliminating the need for users to spend time figuring out correct connections for each arrangement.
Solution Approach 2:
The power supply system is designed to handle multiple connection types (series, parallel, and mixed configurations) and different frame orientations through a single unified detection and control mechanism. The detector and power supply circuit work together to provide universal power distribution capability across various arrangement scenarios without requiring different connection procedures.
3Ease of operation
If power terminals are selectively connected to external power line, then connection simplicity is improved, but short circuit risk increases
Solution Approach 1:
The detector continuously monitors current directions flowing through power terminals and provides feedback to the power supply circuit control. This real-time feedback mechanism allows the system to detect abnormal conditions such as short circuits and automatically adjust or disconnect power supply to prevent damage, maintaining both connection simplicity and system reliability.
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
Enables users to connect electronic photo frames without identifying specific positive or negative lines, allowing flexible arrangement and detection of short circuits, simplifying the connection process and ensuring correct power distribution.
Implementation Method 1
The detector is electrically coupled to the power terminals and is configured to detect current directions of currents flowing through the power terminals
Implementation Method 2
Each of the bridge rectifiers is electrically coupled to at least one of the power terminals. The power supply circuit supplies power to the basic device from the external power line through the bridge rectifiers
Data Source
AI summary
An electronic device and a power supply method thereof are provided. The electronic device includes a plurality of power terminals, a plurality of bridge rectifiers, a detector, a power supply circuit, and a basic device. The detector detects current directions of currents flowing through the power terminals. The power supply circuit is electrically coupled to the power terminals through the bridge rectifiers. The basic device obtains power from the power supply circuit. At least two of the power terminals are selectively electrically coupled to an external power line. The power supply circuit supplies power to the basic device from the external power line through the bridge rectifiers. The basic device controls the power supply circuit according to the current directions of the at least two of the power terminals electrically coupled to the external power line, so as to output power between another at least two of the power terminals.