Adjustable Current Circuit With Range-Specific Step Sizes
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Solution Overview
Problem
Electronic circuits that rely on current values for operation often fail to function as expected due to manufacturing variances, even when receiving target currents, as the parameter they depend on does not vary linearly across the range of discrete values supplied by existing adjustable current sources.
Innovation Solution
A device that supplies adjustable current with different pitches between discrete values based on the current range, allowing for adaptation to manufacturing dispersions by using multiple current sources and switches controlled by digital signals to provide discrete values tailored to each range, ensuring optimal circuit operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single pitch is used for all discrete current values, then the device structure is simple, but the circuit operation reliability deteriorates due to manufacturing variances
Solution Approach 1:
The patent divides the adjustable current range into multiple ranges, with each range having its own pitch value. This segmentation allows the device to provide different pitch values for different current ranges, improving circuit operation reliability while managing device complexity through structured organization of current sources and switches for each range.
Solution Approach 2:
The patent implements a dynamic pitch selection mechanism where the pitch value changes based on the current range. The device dynamically switches between different pitch values using control circuits that select appropriate current sources and switches, allowing adaptation to manufacturing variances across different operating conditions.
2Adaptability or versatility
If multiple current sources with different pitches are used, then the adaptability to manufacturing dispersions improves, but the device complexity increases
Solution Approach 1:
The patent applies different pitch values to different current ranges, making each range locally optimized for its specific operating conditions. Each range has tailored current sources and switches configured with appropriate pitch values, providing local adaptability to manufacturing dispersions while maintaining overall system coherence through unified control.
Solution Approach 2:
The patent changes the pitch parameter based on the current range being operated in. By varying the pitch parameter across different ranges rather than using a fixed value, the device achieves adaptability to manufacturing dispersions while managing complexity through parameter variation rather than complete structural redesign.
3Manufacturing precision
If discrete current values with uniform pitch are supplied, then the device is easier to manufacture, but the precision of current adaptation deteriorates
Solution Approach 1:
The patent segments the current adaptation process into multiple ranges, each with optimized pitch values. This segmentation enables higher current adaptation precision for specific ranges by using tailored pitch values, while the modular structure based on standard components maintains reasonable ease of manufacture through systematic design.
Solution Approach 2:
The patent provides more discrete current values than a single-pitch system would, with each range containing multiple values spaced by its specific pitch. This partial excess of current values within each range improves adaptation precision without requiring a complete redesign of the manufacturing process, as the structure follows predictable patterns.
Data Source
AI summary
The present disclosure concerns a device for supplying an adjustable current configured to supply discrete values of the current belonging to different current ranges, with a pitch between two successive discrete values determined by that of said ranges to which each of the two successive discrete values belongs.