Connector Power Feed Circuit With Accessory Voltage Detection
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Solution Overview
Problem
Existing electronic devices cannot adjust the voltage value of direct-current power supplied to accessory devices based on the device's specific requirements, limiting their functionality and efficiency.
Innovation Solution
An electronic device with a connector and power feed circuit that determines whether a specific terminal is connected and adjusts the voltage value of direct-current power supplied to the accessory device via power supply terminals, allowing for voltage setting based on the connected device's type.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed voltage value is supplied to all accessory devices, then the power supply circuit is simple, but the adaptability to different accessory devices is poor
Solution Approach 1:
The patent applies preliminary action by detecting the accessory device type and determining the appropriate voltage value before actually supplying power. The power feed circuit performs voltage detection and determination in advance, then configures the power supply accordingly, ensuring both adaptability and circuit simplicity.
Solution Approach 2:
The patent implements parameter changes by varying the voltage value supplied to accessory devices based on their type. The power feed circuit changes the voltage parameter from a fixed value to a variable value selected from multiple predetermined voltage values, enabling different voltage levels for different accessory devices.
2Power
If higher voltage is supplied to all devices, then power delivery capability is improved, but the risk of short-circuiting and damage increases
Solution Approach 1:
The patent applies parameter changes by selecting appropriate voltage values from multiple predetermined options based on the detected accessory device type. This ensures that each device receives the optimal voltage for its power requirements, maximizing power delivery capability while preventing excessive voltage that could cause short-circuiting or damage.
Solution Approach 2:
The patent implements feedback by detecting the accessory device type first, then using this detection result to determine the appropriate voltage value. This feedback mechanism ensures that the power supply adapts to the actual device requirements, delivering sufficient power while maintaining safety by avoiding excessive voltage.
3Adaptability or versatility
If voltage detection and determination circuits are added, then the ability to set appropriate voltage values is improved, but the device complexity increases
Solution Approach 1:
The patent applies preliminary action by performing voltage detection and determination before power supply. The detection terminal and power feed circuit work together to identify the accessory type and determine the appropriate voltage in advance, allowing for a relatively simple overall device structure while maintaining voltage setting capability.
Data Source
AI summary
An electronic device includes a connector and a power feed circuit. The connector includes a plurality of first terminals. The plurality of first terminals are connected to a plurality of second terminals of a connecting device and include: one or more power supply terminals to supply direct-current power to the connecting device; and a detection terminal. When the connecting device is connected to the connector, the power feed circuit determines whether a second terminal, among the plurality of second terminals, connected to the detection terminal is a specific terminal. The power feed circuit supplies direct-current supply power having a voltage value set based on a result of the determination to the connecting device via the one or more power supply terminals of the connector.