Voltage Divider Circuit With Precharged Capacitor for Fast Low-Noise Output
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Solution Overview
Problem
Existing voltage generation circuits struggle to quickly stabilize output voltage while reducing noise, particularly when using capacitors, due to a trade-off between stabilization time and noise reduction.
Innovation Solution
A voltage generation circuit design incorporating a voltage divider circuit and additional charging and stop circuits, including transistors and operational amplifiers, to manage capacitor charging and stabilize output voltage rapidly while minimizing noise.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a capacitor is used to generate output voltage, then noise is reduced, but the output voltage cannot be quickly stabilized
Solution Approach 1:
The charging circuit charges the capacitor in advance before the output is needed, so that when voltage stabilization is required, the capacitor is already prepared and can immediately begin stabilizing the output voltage without delay, thus reducing the overall stabilization time while maintaining noise reduction benefits
Solution Approach 2:
The charging circuit operates periodically to recharge the capacitor as needed, maintaining the capacitor's charge level over time. This periodic charging ensures the capacitor is always ready to provide noise filtering while allowing the system to respond quickly to voltage stabilization needs without continuous power consumption
2Object-affected harmful factors
If a capacitor with large capacitance is used, then noise reduction is improved, but the stabilization time increases
Solution Approach 1:
The charging circuit pre-charges the large capacitance capacitor before it is needed for output stabilization. This preliminary action allows the system to benefit from the noise reduction of large capacitance without suffering from the slow response time that would normally result from charging a large capacitor during operation
Solution Approach 2:
The charging circuit acts as an intermediary between the power source and the capacitor, managing the charge transfer in advance. This intermediary function allows the large capacitor to be fully charged and ready for immediate use in noise reduction and voltage stabilization, decoupling the capacitance value from the stabilization time penalty
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
The circuit achieves rapid stabilization of output voltage with minimal noise, reducing stabilization time from seconds to milliseconds while maintaining stability against external fluctuations.
Implementation Method 1
a first capacitor electrically connected to one of the first terminal and the second terminal
Implementation Method 2
a first circuit electrically connected to the one of the first terminal and the second terminal and including a charging circuit configured to charge the first capacitor
Data Source
AI summary
A voltage generation circuit includes a voltage input terminal to which an input voltage is input, a voltage output terminal from which an output voltage is output, a first resistor including a first terminal electrically connected to the voltage input terminal and a second terminal electrically connected to the voltage output terminal, a second resistor including a third terminal electrically connected to the second terminal and a fourth terminal, a first capacitor electrically connected to one of the first terminal and the second terminal, and a first circuit electrically connected to the one of the first terminal and the second terminal and including a charging circuit configured to charge the first capacitor.