Single-Chip AC-AC Conversion Circuit for Stability
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Solution Overview
Problem
Existing AC-AC conversion circuits have complex structures and low reliability, leading to poor stability in power supply.
Innovation Solution
A simplified AC-AC conversion circuit design incorporating a rectified filter circuit, DC-DC conversion circuit, DC-AC inverter circuit, voltage feedback circuit, current detection circuit, and a single-chip main control circuit for unified control, enhancing stability and reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a traditional AC-AC conversion circuit is used, then voltage conversion can be achieved, but the circuit structure becomes complicated and reliability decreases
Solution Approach 1:
The patent combines multiple control functions (voltage feedback control, current detection, temperature detection, fan control, LED indication) into a single-chip main control circuit. This integration reduces the number of discrete components and interconnections, thereby simplifying the overall circuit structure while improving reliability through centralized control.
Solution Approach 2:
The main control circuit performs multiple functions simultaneously: it processes voltage feedback signals, monitors current, detects temperature, controls the fan, and drives LED indications. This multi-functional design eliminates the need for separate dedicated circuits for each function, reducing system complexity while maintaining comprehensive control capabilities.
2Adaptability or versatility
If multiple separate control circuits are used for voltage feedback, current detection, and temperature monitoring, then comprehensive control is achieved, but the circuit structure becomes more complex
Solution Approach 1:
The patent integrates voltage feedback control, current detection, temperature detection, fan control, and LED indication into a single-chip main control circuit. This consolidation maintains all necessary control functions while reducing the number of separate control circuits and their interconnections, thereby simplifying the overall system structure.
Solution Approach 2:
The main control circuit is designed as a multi-functional unit that handles voltage feedback processing, current monitoring, temperature detection, fan speed control, and LED indication driving. This universal controller performs diverse functions that would traditionally require multiple separate circuits, achieving comprehensive control with reduced 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 solution provides a structurally simple and reliable AC-AC conversion circuit with improved stability, overcoming the complexity and reliability issues of existing designs by using a single-chip control system to manage voltage and current feedback for effective AC voltage conversion.
Implementation Method 1
a rectified filter circuit with an input end connected to the AC input end
Implementation Method 2
a rectified filter circuit with an input end connected to the AC input end
Implementation Method 3
a DC-DC conversion circuit with an input end connected to an output end of the rectified filter circuit
Implementation Method 4
a DC-AC inverter circuit with an input end connected to an output end of the DC-DC conversion circuit and an output end connected to the AC output end
Data Source
AI summary
An AC-AC conversion circuit with AC-AC conversion control and AC voltage conversion including a voltage feedback circuit, a voltage detection circuit, a first drive circuit, a current detection circuit, a second drive circuit and a main control circuit. By using the main control circuit as the main control center, which has strong reliability and good circuit stability, the defects of complicated circuit structure and low reliability, and poor stability of the supply circuit in the existing AC-AC conversion circuit may be overcome. Also disclosed is an AC-AC conversion device which has good stability due to the highly reliable AC-AC conversion circuit thereof.