Independent Switch Circuit Control to Suppress Signal Interference
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Solution Overview
Problem
Conventional electronic devices experience non-ideal interference between switch circuits, affecting overall performance.
Innovation Solution
The design includes a mechanical switch coupled to a control node, with independent first and second switch circuits that generate control voltages, utilizing transistors and resistors to ensure that switching one circuit does not affect the other, thereby minimizing interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple switch circuits are used in conventional electronic devices, then the device functionality is enhanced, but non-ideal interference is induced between different signals
Solution Approach 1:
The patent divides the switching control into separate independent circuits, where each switch circuit has its own dedicated control path. The first switch circuit controls the first switch with its own control voltage, and the second switch circuit controls the second switch with its own control voltage. This segmentation isolates the control signals and prevents interference between different switch circuits while maintaining enhanced device functionality.
2Device complexity
If switch circuits share a common control node, then circuit complexity is reduced, but switching operations interfere with each other
Solution Approach 1:
The patent introduces separate control voltage generation paths as intermediaries between the switch circuits and the mechanical switches. Each control voltage is generated independently through its own switch circuit (first switch circuit generates first control voltage, second switch circuit generates second control voltage), which acts as a mediator to isolate the switching operations. This intermediary approach maintains relatively simple circuit structure while ensuring that switching operations in one circuit do not interfere with the other, thereby improving reliability.
Data Source
AI summary
An electronic device includes a first switch circuit, a second switch circuit, and a mechanical switch. The first switch circuit is coupled to a control node. The first switch circuit is configured to generate a first control voltage. The second switch circuit is coupled to the control node. The second switch circuit is configured to generate a second control voltage. The mechanical switch is configured to selectively couple the control node to a ground voltage. When the first switch circuit is switched, the second control voltage is not affected. When the second switch circuit is switched, the first control voltage is not affected.