Constant Current Power Supply via Pulse Ratio Feedback
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Solution Overview
Problem
Existing power supply systems fail to maintain a constant direct current flow through loads with varying resistance values within a wide range, as they do not adequately address the expansion of load resistance values, which are believed to already meet current requirements.
Innovation Solution
A device comprising a DC voltage source, a DC-voltage-to-pulse-voltage converter, a pulse-voltage-to-DC-voltage converter, a DC stabilizer, and a control circuit, where the load is connected to both the output of the pulse-voltage-to-DC-voltage converter and the input of the DC stabilizer, allowing for stabilization of current and generation of control voltage to adjust pulse ratios and stabilize DC voltage drops, enabling constant current flow across a broader range of load resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the load resistance value is expanded to a wider range, then the adaptability of the power supply system is improved, but the ability to maintain constant direct current flow deteriorates
Solution Approach 1:
The control circuit continuously monitors the direct current flowing through the load and adjusts the pulse ratio of the DC-voltage-to-pulse-voltage converter accordingly. This feedback mechanism ensures that despite wide variations in load resistance, the control system dynamically compensates to maintain a constant direct current flow through the load.
Solution Approach 2:
The system dynamically adjusts the pulse ratio of the DC-voltage-to-pulse-voltage converter based on the actual load conditions. By making the pulse ratio variable rather than fixed, the system can adapt to a wide range of load resistance values while maintaining stable direct current output through real-time control adjustments.
2Stability of the object's composition
If the pulse ratio is adjusted to maintain constant current, then the current stability is improved, but the control circuit complexity increases
Solution Approach 1:
The control circuit uses feedback from the measured direct current to automatically adjust the pulse ratio, eliminating the need for complex manual control mechanisms. This automated feedback loop simplifies the overall control architecture while achieving stable current regulation across varying load conditions.
Solution Approach 2:
The control circuit performs self-regulation by automatically adjusting the pulse ratio based on the measured current conditions. This self-service capability reduces the need for external intervention or complex control algorithms, maintaining current stability through inherent system feedback mechanisms.
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 device ensures a constant direct current flow through loads with varying resistance values, with the maximum load voltage limited by the accessible voltages of the used elements, allowing load resistance to vary widely without affecting the current, thus securing unvarying DC flow across a broader range.
Implementation Method 1
a DC-voltage-to-pulse-voltage converter, its input being connected to an output of the DC voltage source
Implementation Method 2
a pulse-voltage-to-DC-voltage converter, its input being connected to an output of the DC-voltage-to-pulse-voltage converter
Data Source
AI summary
An apparatus for producing unvarying direct load current comprises a DC voltage source, a direct-voltage-to-pulse-voltage converter (DCPVC), a pulse-voltage-to-direct voltage converter (PDCVC), a DC stabilizer, and a load connected by one of its terminals to an output of the PDCVC and by another terminal to an input of the DC stabilizer, and a control circuit connected by one of its inputs to one of the terminals of the load, by another input to an output of the direct current stabilizer, and by an output to a control input of the DCPVC. As the load varies, a stabilizing voltage at the DC stabilizer is formed, and a direct load current, unvarying in a wide range of load variations, is produced.