Voltage Application Device Polarity Switching Sequence
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Solution Overview
Problem
In voltage application devices using multiple power sources, switching the polarity of output voltages can result in a reverse current flowing through the power sources, potentially damaging them.
Innovation Solution
A method and device where the polarity of each power source is switched one at a time while maintaining a state where at least one power source has a different polarity, minimizing reverse current flow by controlling the configuration of resistances and connections in the electrode circuit, and optionally using parallel resistances to manage current.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the polarity of output voltages of multiple power sources is switched simultaneously, then the switching speed is fast, but reverse current flows through the power sources causing potential damage
Solution Approach 1:
The patent segments the voltage polarity switching process by introducing intermediate switching stages. Instead of switching all power source polarities simultaneously, the system switches them in sequences (first group then second group), with each stage maintaining at least one power source in its original state. This segmentation prevents reverse current while achieving complete polarity switching.
Solution Approach 2:
The patent applies preliminary action by pre-planning and executing voltage polarity switching in a specific sequence. Before switching all power sources, the system first switches a first group while maintaining a second group in original state, then subsequently switches the second group. This preliminary staged approach ensures that reverse current conditions are avoided from the outset.
2Reliability
If the polarity of output voltages is switched by disconnecting power sources, then reverse current is avoided, but the switching time increases
Solution Approach 1:
The patent introduces an intermediary switching mechanism that allows continuous power supply during polarity switching. By maintaining at least one power source in its original state during each switching stage and using controlled sequential switching, the system acts as an intermediary buffer that prevents reverse current without requiring complete disconnection of power sources.
Solution Approach 2:
The patent ensures continuity of useful action by maintaining uninterrupted power supply to the electrode circuit throughout the polarity switching process. The sequential switching approach ensures that at least one power source remains active and connected during each transition stage, eliminating idle time and maintaining continuous operational capability.
3Adaptability or versatility
If multiple power sources are connected to electrode circuit, then complex voltage distribution is achieved, but reverse current risk increases during polarity switching
Solution Approach 1:
The patent segments the multiple power sources into distinct groups (first group and second group) with different switching sequences. This segmentation allows the system to maintain complex voltage distribution capabilities across multiple electrodes while controlling the switching of each group independently, thereby managing reverse current risk in each segment separately.
Solution Approach 2:
The patent applies local quality by assigning different switching characteristics to different groups of power sources. The first group undergoes polarity switching while the second group maintains original polarity, and vice versa in subsequent stages. This localized differential switching approach preserves the versatility of complex voltage distribution while minimizing reverse current exposure in each local group.
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
Reduces the risk of power source damage by minimizing reverse current flow during polarity switching, ensuring safe operation of the voltage application device.
Implementation Method 1
voltages with an appropriate magnitude are applied to the second acceleration electrodes 103, the flight tube 104, the reflectron electrodes 105, and the back plate 106 to form a potential having a gradient
Implementation Method 2
ions entering the ion acceleration region (orthogonal acceleration unit) are introduced to the flight space while being accelerated in a direction orthogonal to its entering direction
Data Source
AI summary
Voltages are applied by a voltage application device having an electrode circuit including a plurality of electrode connection parts connected in series via a resistance R between neighboring electrode connection parts; and power sources P for outputting both positive and negative polarities, each power source connected to both ends of the electrode circuit. The method of applying a voltage includes determining a polarity and a magnitude of an output voltage of so that a voltage having a predetermined polarity and magnitude is applied to the electrodes; and based on the polarities, switching the polarities of the output voltages by switching the polarities of the output voltages of the plurality of power sources P one at a time while maintaining a state where a polarity of an output voltage of at least one power source P, among the plurality of power sources P, is different from others.