Capacitor Resistor Mounting Structure for Circuit Stability
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Solution Overview
Problem
The electrical characteristics of electronic circuits containing a parallel circuit composed of a capacitor and a resistor fluctuate due to slight displacements in the mounting positions of the electrodes, caused by dimensional discrepancies and assembly errors.
Innovation Solution
A mounting structure for a capacitor and a resistor where the resistor is formed on a single insulating base with resistance bodies aligned along the length direction, ensuring that each resistance body directly faces the corresponding electrode forming portions, thereby maintaining a fixed positional relationship and minimizing the impact of displacements on the circuit's electrical characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the capacitor and resistor are mounted on a circuit board using conventional methods, then the assembly is easy to manufacture, but the electrical characteristics fluctuate due to mounting position displacements
Solution Approach 1:
The resistor is segmented into multiple resistance bodies (first resistance body and second resistance body) that are disposed at different positions along the length direction. Each resistance body corresponds to a specific electrode forming portion, allowing the resistor to maintain its functional relationship with the capacitor despite mounting position displacements.
Solution Approach 2:
Different parts of the resistor have different spatial arrangements of resistance bodies. The first resistance body is positioned to face the first electrode forming portion, while the second resistance body is positioned to face the second electrode forming portion, creating local functional zones that are insensitive to overall mounting position variations.
2Reliability
If the resistor is configured with resistance bodies facing the electrode forming portions, then the electrical characteristics are stabilized, but the device structure becomes more complex
Solution Approach 1:
Multiple resistance bodies are merged into a single resistor component that is disposed along the length direction. This integration maintains the functional separation of resistance bodies facing different electrode portions while presenting a unified component structure that does not significantly increase overall device complexity.
3Ease of manufacture
If the capacitor electrodes are mounted with standard tolerance, then the manufacturing is easier, but the electrical characteristics fluctuate
Solution Approach 1:
The resistor is pre-configured with multiple resistance bodies at specific positions along its length direction before mounting. This preliminary arrangement ensures that regardless of the exact mounting position, at least one resistance body will face the corresponding electrode forming portion, maintaining electrical characteristics consistency without requiring precise mounting control.
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
This configuration stabilizes the electrical characteristics of the parallel circuit, reducing fluctuations in resistance and capacitance values even when there are slight displacements in the mounting positions, ensuring consistent performance.
Implementation Method 1
the capacitor 51 is constructed of an electrostatic capacitance formed between both electrodes 52 and 53. Since air is used as the dielectric
Implementation Method 2
the capacitor 51 stores electrical energy in an electric field formed between two electrodes
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
A mounting structure minimizes the influence of displacements, along a length direction (A) of a resistor, in mounting positions of capacitor electrodes (11,12) on the electrical characteristics of a circuit including a parallel circuit composed of a capacitor (3A) and the resistor. The capacitor (3A) has first and second electrodes (11,12), which respectively include first and second side surface portions (11a, 11b,12a,12b) disposed in parallel to a length direction (A) of the resistor. The resistor has a first resistance body (22) corresponding to the first side surface portions (11a,11b) and a second resistance body (23) corresponding to the second side surface portions (12a,12b) that are separately disposed along the length direction (A) and connected in series via a wire (26), and is mounted so that the first resistance body (22) is positioned directly facing the first side surface portions (11a,11b) and the second resistance body (23) is positioned directly facing the second side surface portions (12a,12b).