Redundant Isolating Switch Circuit for Reverse Current Suppression
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Solution Overview
Problem
Conventional redundant isolating switch control circuits experience significant reverse current and increased conduction loss due to instantaneous voltage drops, which are not adequately addressed by existing technologies.
Innovation Solution
A redundant isolating switch control circuit design incorporating field-effect transistors, current mirror circuits, and electronic units such as diodes, resistors, and integrated circuit modules to improve response speed and manage voltage drops, featuring parallel arrangements of field-effect transistors and voltage stabilizing units to control the transistors' turn-on and turn-off states.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the resistance values of resistors are reduced to improve response speed, then the response speed of field-effect transistors is improved, but the conduction loss of field-effect transistors increases
Solution Approach 1:
The patent changes the resistance values of resistors (specifically reducing from 6.8kΩ to 3kΩ) to improve the response speed of field-effect transistors. This parameter adjustment allows the transistors to switch faster while the patent accepts the trade-off of increased conduction loss as a necessary consequence of the speed improvement.
2Use of energy by moving object
If the voltage at the power input end is decreased instantaneously, then the power consumption is reduced, but a very large reverse current is generated
Solution Approach 1:
The patent applies preliminary anti-action by pre-configuring the circuit with specific resistor values and field-effect transistor arrangements that prevent the generation of large reverse currents when voltage drops occur. The circuit is designed in advance to counteract the harmful reverse current effect before it can occur during voltage transients.
Solution Approach 2:
The patent uses resistors as intermediary elements that mediate between the power input end and the field-effect transistors. These resistors control the rate of voltage change and limit reverse current flow, acting as a buffer that prevents direct coupling of voltage transients to the transistors.
3Productivity
If the resistance values of resistors are reduced, then the response speed is improved, but the conduction loss increases
Solution Approach 1:
The patent systematically adjusts resistance parameters (reducing from 6.8kΩ to 3kΩ) to optimize the response speed of the isolating switch control circuit. This parameter change improves productivity by enabling faster switching responses, while the patent acknowledges and manages the accompanying increase in conduction loss through overall circuit design considerations.
Data Source
AI summary
A redundant isolating switch control circuit comprises a working power supply, a power input end, a power output end, at least one field-effect transistor, a first transistor, and a second transistor. The field-effect transistor comprises a gate electrode, a source electrode connected to the power input end and a drain electrode connected to the power output end. The first transistor and the second transistor together with the associated circuits form a current mirror circuit. The redundant isolating switch control circuit further comprises a first electronic unit comprising a first connecting end connected to the first base electrode of the first transistor and a second connecting end connected to the second emitter electrode of the second transistor, and a second electronic unit comprising a third connecting end connected to the first collector of the first transistor and a fourth connecting end connected to the gate electrode.