Integrated AC-DC Control Circuit for Voltage and Current Limiting

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Solution Overview

Problem

Existing power supply systems lack a single circuit capable of converting alternating current to direct current, regulating voltage, and limiting current, while also requiring additional physical space due to separate circuits for each function.

Innovation Solution

A control circuit that integrates a semiconductor and a transistor in a back-to-back configuration to convert alternating current to direct current, regulate voltage, and limit current, using a controller to manage these functions and ensure operation within predetermined thresholds.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If separate circuits are used for AC to DC conversion, voltage regulation, and current limiting, then each function can be performed independently, but the device occupies extra physical space and increases circuit complexity

Engineering Contradiction:

Improvefunctional independenceVSAvoidphysical space

Core Design Contradiction:

ReliabilityVSArea of stationary object

Solution Approach 1:

The patent combines AC to DC conversion, voltage regulation, and current limiting functions into a single integrated circuit structure. The converter circuit includes switching elements that perform both rectification and regulation functions, eliminating the need for separate physical circuits and reducing overall device footprint while maintaining functional independence through controlled switching operations.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The converter circuit is designed to perform multiple functions simultaneously: it converts AC to DC, regulates output voltage, and limits current all within the same circuit architecture. The switching elements and control mechanism provide universal functionality that replaces multiple dedicated circuits, achieving space efficiency without sacrificing functional capabilities.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Reliability

If separate circuits are used for AC to DC conversion, voltage regulation, and current limiting, then each function can be performed independently, but the circuit complexity increases

Engineering Contradiction:

Improvefunctional independenceVSAvoidcircuit structure

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent merges multiple circuit functions into a single converter circuit structure. The switching elements serve dual purposes as both rectifiers and voltage regulators, and the control system integrates current limiting functionality. This consolidation reduces the number of separate circuits and interconnections, thereby reducing overall circuit complexity while maintaining functional independence.

Inventive Principle:

Principle #5Merging (Combining)

3Use of energy by moving object

If traditional rectifier circuits are used, then AC to DC conversion is achieved, but voltage regulation and current limiting are not provided

Engineering Contradiction:

Improveconversion efficiencyVSAvoidfunctional capability

Core Design Contradiction:

Use of energy by moving objectVSAdaptability or versatility

Solution Approach 1:

The converter circuit is designed to provide multiple functions including AC to DC conversion, voltage regulation, and current limiting within a single integrated structure. The switching elements and control mechanism enable the circuit to adapt its operation to provide different functions as needed, enhancing functional capability while maintaining efficient energy conversion through synchronized switching operations.

Inventive Principle:

Principle #6Universality (Multi-functionality)

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 integrated circuit efficiently converts alternating current to direct current, regulates voltage, and limits current, ensuring equipment operates within specified parameters, thereby optimizing power delivery and reducing space requirements.

Implementation Method 1

the first semiconductor (4), which converts alternating current into direct current

Methodology Applied

Scientific EffectRectification: Diode

Implementation Method 2

The first transistor (6), which is switched by the controller (5) to limit the current according to the reference value determined by the user and to regulate the voltage at the level determined by the user

Methodology Applied

Scientific EffectField effect transistor operation:

Data Source

PatentUS20260005618A1Control circuit

Publication Date: 2026.01.01 TUSAS - TÜRK HAVACILIK & UZAY SANAYII ANONIM SIRKETI

AI summary

A control circuit includes at least one piece of equipment configured to perform a function specified by the manufacturer, at least one source connected to the equipment and being a source of alternating current supplying the equipment by providing voltage to the equipment, a circuit whose input is connected to the source and whose output is connected to the equipment and which controls the voltage and current transmitted from the source to the equipment, a first semiconductor connected to the source and having a switching function, at least one controller connected to the first semiconductor in the circuit, controlling the operation of the first semiconductor by controlling the current and voltage on the legs of the first semiconductor and switching the first semiconductor so that the first semiconductor converts the alternating current transmitted by the source into direct current.