Power Potential Rectifier for Ethernet Power Distribution

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Solution Overview

Problem

Magnetic transformers used in power distribution over Ethernet networks are cumbersome, costly, and prone to failures, limiting current and causing electromagnetic interference, while also occupying significant PCB space and failing to provide reliable power to network devices during outages.

Innovation Solution

The implementation of non-magnetic transformer and choke circuitry, utilizing integrated circuits or discrete components, to directly couple power and data signals over Ethernet connections, eliminating the need for magnetic transformers and enhancing system density, reliability, and power distribution efficiency.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If magnetic transformers are used for power distribution over Ethernet, then DC isolation and signal transfer functions are achieved, but device complexity, cost, and PCB space increase significantly

Engineering Contradiction:

ImproveDC isolation and signal transferVSAvoidtransformer structure

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent extracts the essential function of magnetic isolation from the magnetic transformer structure itself, eliminating the need for bulky magnetic components while retaining the isolation capability through circuit design alone

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The patent replaces the mechanical/magnetic transformer system with an electronic circuit implementation using operational amplifiers and feedback networks, substituting magnetic field-based isolation with electronic signal processing

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

2Power

If magnetic transformers are used in power distribution circuits, then power signal transmission is enabled, but electromagnetic interference and cross-talk increase

Engineering Contradiction:

Improvepower signal transmissionVSAvoidelectromagnetic interference

Core Design Contradiction:

PowerVSObject-generated harmful factors

Solution Approach 1:

The patent replaces magnetic field-based power transmission with an electronic feedback system that uses operational amplifiers to regulate power delivery, eliminating electromagnetic radiation and interference associated with magnetic transformers

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent introduces feedback networks and control circuits as intermediaries between power source and load, enabling precise power transmission without direct magnetic coupling that causes interference

Inventive Principle:

Principle #24Intermediary (Mediator)

3Reliability

If magnetic transformers are used for power distribution, then current isolation is achieved, but current transmission capability is limited

Engineering Contradiction:

Improvecurrent isolationVSAvoidcurrent transmission

Core Design Contradiction:

ReliabilityVSPower

Solution Approach 1:

The patent employs dynamic feedback control that continuously adjusts circuit parameters to maintain optimal isolation while maximizing current transmission capability, allowing the system to adapt to varying load conditions

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The patent changes the operational parameters of the isolation circuit through feedback control, adjusting gain, bandwidth, and operating point to simultaneously achieve high current transmission and effective isolation

Inventive Principle:

Principle #35Parameter changes

4Ease of manufacture

If magnetic transformers are deployed in network devices, then power distribution function is provided, but failure rate and fire hazard increase

Engineering Contradiction:

Improvepower distribution functionVSAvoidfailure rate

Core Design Contradiction:

Ease of manufactureVSReliability

Solution Approach 1:

The patent removes magnetic transformers entirely from the power distribution circuit, eliminating the primary source of failures and fire hazards while maintaining the power distribution function through solid-state electronics

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The patent replaces expensive, failure-prone magnetic transformers with inexpensive solid-state electronic components that have significantly longer operational lifetimes and lower failure rates

Inventive Principle:

Principle #27Cheap short-living objects (Disposable)

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 solution enables efficient, reliable power distribution over Ethernet networks, reducing electromagnetic interference, increasing system density, and ensuring network device operation during power outages, while maintaining transformer functionality without the drawbacks of magnetic transformers.

Implementation Method 1

an integrated circuit that rectifies and passes a power signal and data signal received from the network connector

Methodology Applied

Scientific EffectRectification: Diode

Data Source

PatentUS7500118B2Network device with power potential rectifier

Publication Date: 2009.03.03 KINETIC TECHNOLOGIES INTERNATIONAL HOLDINGS LP

AI summary

In a network device, a power potential rectifier is adapted to conductively couple a network connector to an integrated circuit that rectifies and passes a power signal and data signal received from the network connector. The power potential rectifier regulates a received power and/or data signal to ensure proper signal polarity is applied to the integrated circuit.