Socket Reverse Wiring Detection With Diode Indicator Circuit

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Solution Overview

Problem

The frequent occurrence of reverse wiring of positive and negative electrodes in sockets poses a risk of equipment damage and personal safety hazards due to the lack of effective protection mechanisms.

Innovation Solution

A socket design incorporating a diode, signal control circuit, and indicator light that detects reverse wiring and activates an alarm via an indicator light when the electrodes are incorrectly connected, ensuring timely correction and safety.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a socket is installed without reverse wiring protection, then the device complexity is low, but equipment damage and safety hazards occur due to reverse wiring

Engineering Contradiction:
ImprovesafetyVSAvoiddevice complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent implements preliminary action by detecting reverse wiring connection before equipment is powered on through a diode-based detection circuit. The indicator light alerts users to the reverse connection state before any damage can occur, allowing corrective action to be taken in advance. This prevents equipment damage while adding minimal complexity through simple electronic components.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The patent uses an indicator light as an intermediary between the reverse wiring condition and the user. Instead of directly preventing reverse wiring through complex interlocks, the system mediates the situation by providing visual feedback through the indicator light, enabling users to correct the connection without sophisticated control mechanisms.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Reliability

If reverse wiring detection components are added to the socket, then safety is improved, but the manufacturing cost increases

Engineering Contradiction:
ImprovesafetyVSAvoidmanufacturing cost
Core Design Contradiction:
ReliabilityVSEase of manufacture

Solution Approach 1:

The patent employs inexpensive electronic components including a diode, resistor, and LED indicator light to detect and indicate reverse wiring. These low-cost components provide effective safety functionality without significantly increasing manufacturing expenses, making the solution economically viable for widespread implementation.

Inventive Principle:
Principle #27Cheap short-living objects (Disposable)

Solution Approach 2:

The detection circuit is designed to be self-powered from the wiring connection itself, eliminating the need for external power sources or additional batteries. The circuit automatically activates when wiring is connected, providing safety functionality without adding complex power management requirements that would increase manufacturing complexity and cost.

Inventive Principle:
Principle #25Self-service

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

Prevents equipment damage and ensures personal safety by alerting users to reverse wiring through a visible indicator light, thereby correcting the connection mistake.

Implementation Method 1

a diode having an anode coupled to the negative wiring port

Methodology Applied
Scientific EffectDiode rectification: Diode

Implementation Method 2

an indicator light coupled to the signal control circuit to operate upon receiving the control signal

Methodology Applied
Scientific EffectElectroluminescence: Electroluminescence

Data Source

PatentEP4712283A1Socket with reverse connection indication
Publication Date: 2026.03.18 SCHNEIDER ELECTRIC IND SAS
  • EP4712283A1 patent drawingFigure 1~2
  • EP4712283A1 patent drawingFigure 3~4
  • EP4712283A1 patent drawingFigure 5

AI summary

Embodiments of the present disclosure provide a socket including a base including a positive wiring port and a negative wiring port; a diode having an anode coupled to the negative wiring port; a signal control circuit coupled to a cathode of the diode and the positive wiring port to output a control signal when the diode is turned on; and an indicator light coupled to the signal control circuit to operate upon receiving the control signal.