AC Step-Down Circuit Merging AC and DC Outputs
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Solution Overview
Problem
Existing alternating current step-down circuits are complex, costly, and limited in functionality, failing to meet the diverse voltage requirements of electronic equipment effectively.
Innovation Solution
A simplified alternating current step-down circuit design incorporating a full-bridge rectification and filtering circuit, flyback step-down circuit, DC-DC step-down unit, inverting unit, temperature detection, fan circuit, and operative state indication circuit, along with PWM controller chips and microcomputer control, enabling efficient conversion of AC to AC and DC signals with rich functionality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If existing alternating current step-down circuits are used, then voltage conversion function is provided, but the circuit structure is large and complex
Solution Approach 1:
The patent applies multi-functionality by integrating multiple output capabilities (AC output and DC output) into a single step-down circuit. The circuit can simultaneously provide voltage conversion to AC and DC forms, allowing one device to replace multiple separate devices, thereby reducing overall system complexity while enhancing adaptability to different electronic equipment requirements
Solution Approach 2:
The patent combines the AC output circuit and DC output circuit into a single integrated step-down circuit structure. By merging previously separate voltage conversion functions into one unified circuit, the patent reduces the number of components and simplifies the overall structure while maintaining both AC and DC output capabilities
2Ease of manufacture
If existing alternating current step-down circuits are used, then voltage conversion is achieved, but design and manufacture cost is high
Solution Approach 1:
The patent merges multiple voltage conversion functions into a single integrated circuit, reducing the total number of components required for manufacturing. This consolidation simplifies the assembly process and reduces material costs, directly addressing the high manufacture cost issue while maintaining both AC and DC output capabilities
3Adaptability or versatility
If existing alternating current step-down circuits are used, then AC to DC conversion is provided, but only single function output is available
Solution Approach 1:
The patent implements multi-functionality by enabling the step-down circuit to output both AC and DC voltages simultaneously. The circuit includes separate output terminals for AC and DC, allowing users to select the appropriate output type based on the requirements of connected electronic equipment, thereby significantly enhancing adaptability without substantially increasing circuit complexity
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 provides a compact, cost-effective solution that satisfies user requirements by converting AC signals into both AC and DC signals, enhancing user experience through improved functionality and efficiency.
Implementation Method 1
a full-bridge rectification and filtering circuit
Implementation Method 2
a full-bridge rectification and filtering circuit
Implementation Method 3
a flyback step-down circuit
Implementation Method 4
a DC-DC step-down unit
Implementation Method 5
an inverting unit
Data Source
AI summary
An alternating current step-down circuit comprises an AC input, a DC output, an AC output, a full-bridge rectification and filtering circuit, a flyback step-down circuit, a DC-DC step-down unit and an inverting unit. The AC input is connected with an input of the full-bridge rectification and filtering circuit; an output of the full-bridge rectification and filtering circuit is connected with an input of the flyback step-down circuit and an input of the DC-DC step-down unit, respectively; an output of the flyback step-down circuit is connected with the DC output, the input of the DC-DC step-down unit and an input of the inverting unit, respectively; an output of the DC-DC step-down unit is connected with the input of the inverting unit; and an output of the inverting unit is connected with the AC output.