Current Flow Indicator with LED Feedback for Electrical Devices
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Solution Overview
Problem
Electrical heating circuits and similar devices often lack audible, visible, or vibratory feedback, making it difficult to determine their proper operation, which can be hazardous due to potential electrical shock or burns, especially when installed in inaccessible locations.
Innovation Solution
A current flow indicator integrated into an electrical supply cord or universal plug adapter that senses electrical current and provides a visible indication of operation using LEDs, ensuring the user knows if the device is consuming power, thereby indicating proper operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If electrical heating circuits are used to provide heating function, then the device can maintain temperature, but the device produces no audible, visible, or vibratory feedback making operation status undetectable
Solution Approach 1:
The patent introduces a feedback mechanism by integrating an LED indicator into the electrical heating circuit. The LED provides visual feedback that changes state based on the operational status of the heating element, allowing users to detect whether the device is operating correctly without direct contact with the heating components.
Solution Approach 2:
The LED serves as an intermediary element between the electrical heating circuit and the user. It translates the internal electrical state into a visible signal that can be perceived from a safe distance, eliminating the need for users to touch or closely observe the heating elements to determine operational status.
2Adaptability or versatility
If electrical heating circuits are installed in confined or insulated spaces, then the device can be integrated into existing structures, but the user cannot sense the feedback of the device
Solution Approach 1:
The patent moves the feedback signal from the hidden internal dimension to the external visible dimension. By positioning the LED indicator on the exterior of the device housing, it becomes detectable from a distance and in various orientations, overcoming the limitation of confined or insulated installation spaces where direct sensing would be impossible.
3Ease of operation
If users touch electrical heating devices to detect operation, then the user can sense heating, but the user may experience electrical shock or burns
Solution Approach 1:
The LED indicator acts as a safe intermediary that provides operation detection without requiring physical contact with the heating elements. Users can determine device status by observing the LED from a safe distance, completely eliminating the risk of electrical shock or burns associated with touching the heating components.
Solution Approach 2:
The patent replaces the mechanical/tactile detection method (touching the heating element to sense heat) with an optical detection method (observing LED light emission). This substitution eliminates the need for physical contact while providing clear operation status indication, thereby removing the safety hazards of direct contact.
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 safe and reliable method to visually confirm the operation of electrical devices without feedback, preventing accidental electrical shock or burns by clearly indicating current consumption, even in hard-to-reach locations.
Implementation Method 1
Some electrical devices have a light or light emitting diode (LED) that indicates an electrical supply source is connected
Implementation Method 2
The present invention will sense electrical current flowing through the electrical device and will produce a visible feedback mode to indicate proper operation
Data Source
AI summary
An electric current flow indicator senses electrical current flowing through an electrical device and produces a visible feedback to indicate proper operation. The current flow indicator has a voltage and current regulation circuit having first and second inputs connected to first and second conductors, respectively. The circuit converts an AC line voltage carried by an electrical supply cord into a limited low voltage DC current. A toroidal core inductor coil and at least one current indicating LED are connected to the circuit. The first conductor passes through a center of the inductor coil. A transistor amplifier is connected to an output of the inductor coil for energizing the current indicating LED when an electrical current conducts through the first conductor. The flow indicator can be integrated into an electrical supply cord, a male or female electrical cord end, a single or duplex electrical outlet, or a universal plugin adapter.