Self-Oscillating Energy Extraction Circuit for Voltage Boosting
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Solution Overview
Problem
Conventional power supply designs often compromise on form factor and utility when using off-the-shelf modules, and there is a need for efficient AC and DC power supplies that can utilize low voltage, low energy sources like mechanical vibrations, solar radiation, and thermal gradients without sacrificing aesthetic appeal or increasing size.
Innovation Solution
The development of circuits and systems that efficiently extract and utilize direct current (DC) power from energy storage devices using self-oscillating circuits with ferrite cores and transistors, allowing for voltage boosting and energy harvesting from various ambient sources, enabling compact form factors and extended operating cycles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If off-the-shelf power supply modules are used, then design and testing time is saved, but the form factor and utility of the device are compromised
Solution Approach 1:
The power supply circuit is designed to automatically regulate its own operation through feedback mechanisms, eliminating the need for complex external control circuits and reducing overall circuit complexity while maintaining efficient power delivery
2Duration of action of stationary object
If larger batteries are used to extend operating interval, then battery replacement frequency is reduced, but the device size and aesthetic appeal are negatively influenced
Solution Approach 1:
The circuit employs voltage regulation and efficiency optimization techniques that change the operational parameters of power consumption, allowing smaller batteries to deliver extended operating intervals by reducing waste and improving conversion efficiency
Solution Approach 2:
The power supply circuit maintains continuous efficient operation through feedback control, ensuring that energy is consistently delivered at optimal efficiency levels, thereby extending the effective operating interval of smaller battery capacities
3Volume of moving object
If low voltage energy sources are used for energy harvesting, then aesthetic appeal and compactness are maintained, but the amount of energy available is limited
Solution Approach 1:
The circuit uses voltage boosting and regulation techniques to transform low voltage input from compact energy harvesting sources into sufficient operating voltage, maintaining both compact form factor and adequate energy availability for device operation
Solution Approach 2:
The power supply maintains continuous efficient operation by optimizing the conversion process from low voltage harvesting sources, ensuring maximum energy utilization from the limited input available from compact energy harvesting elements
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
These systems effectively extend the operating cycle of power sources, provide a compact form factor, and enable the use of low voltage energy sources, ensuring reliable power delivery while maintaining device utility and aesthetic appeal.
Implementation Method 1
a self-oscillating circuit having primary and secondary windings wound around a ferrite core
Implementation Method 2
wound around a ferrite core
Data Source
AI summary
A system for extracting energy from an energy storage device configured to supply direct current (DC) energy at a nominal voltage rating comprises a first node dimensioned and arranged to receive direct current energy from the energy storage device. Embodiments include a self-oscillating circuit having primary and secondary windings wound around a ferrite core, wherein a positive terminal of the primary winding is tied to the negative terminal of the secondary winding at the first node, and wherein a positive terminal of the secondary winding is coupled to a second node, the second node being coupled to a load requiring power to be supplied at one of a voltage less than, equal to, or higher than the nominal voltage. Some embodiments further include a transistor having a base resistively coupled to a negative terminal of the primary winding and a collector coupled to the second node.