Power Control Circuit Voltage Detection
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Solution Overview
Problem
Conventional power control circuits in electronic devices face challenges in efficiently managing power usage, particularly with low-wattage power adapters, leading to increased energy loss and limited power provision, which can damage hardware due to excessive power consumption.
Innovation Solution
A power control circuit comprising a detect device, a first control device, and a second control device that monitors voltage variations to dynamically switch between different operational modes, such as charging and throttling functions, to optimize power usage and prevent hardware damage by adjusting power output based on detected voltage changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a low-wattage power adapter is used to reduce production cost, then manufacturing cost is reduced, but power provision capability is limited
Solution Approach 1:
The power control circuit dynamically adjusts the operation status of circuit devices based on detected power levels. When power excess is detected, the circuit automatically throttles or shuts down non-essential functions, enabling the system to adapt its power consumption to match the limited capacity of low-wattage adapters while maintaining core functionality.
Solution Approach 2:
The system changes operational parameters of circuit devices based on power availability. By detecting power levels and adjusting operating modes (e.g., switching between full performance and power-saving modes), the system enables low-wattage adapters to effectively support devices that would normally require higher power inputs.
2Ease of manufacture
If power adapter wattage is reduced, then production cost is reduced, but energy loss increases due to inefficient power management
Solution Approach 1:
The power control circuit continuously detects power levels from the power adapter and provides feedback to control the operation status of circuit devices. This closed-loop feedback mechanism enables real-time adjustment of power consumption, ensuring that the system operates efficiently within the constraints of low-wattage adapters and minimizes energy loss through intelligent power management.
3Power
If high power is supplied to electronic products, then power provision is sufficient, but hardware damage may occur due to excessive power consumption
Solution Approach 1:
The power control circuit proactively prevents hardware damage by detecting power levels before excessive power consumption can occur. When the system detects that power supply exceeds safe operating levels, it preemptively throttles or shuts down circuit devices to avoid hardware damage, ensuring safe operation even when high-power adapters are used with devices designed for lower power inputs.
Data Source
AI summary
A power control circuit includes a detection device, a first control device, and a second control device. When the detection signal is changed from lower to higher than the first voltage, the first control device's output is changed to the second potential. When the detection signal is changed from higher to lower than the second voltage, the first control device's output is changed to the first potential. When the detection signal is changed from lower to higher than the third voltage, the second control device's output is changed to the fourth potential. When the detection signal is changed from higher to lower than the fourth voltage, the second control device's output is changed to the third potential. According to the first or second potentials, the circuit device turns on/off the first function. According to the third or fourth potentials, the circuit device turns on/off the second function.