Transformerless Power Supply Circuit Using Capacitor Drop
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Solution Overview
Problem
Current power supply systems are inefficient due to the use of transformers, which lead to energy waste and increased heat generation, and require multiple power supplies for different voltage levels, resulting in complex and costly designs with reduced reliability.
Innovation Solution
A power circuit that replaces transformers with capacitor drop technology and integrates Energy Wells, using capacitors and MOSFETs to regulate power and eliminate the need for linear regulators, allowing for efficient voltage and current modulation to provide power to devices without the need for multiple power supplies.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If transformers are used for voltage conversion, then voltage transformation is achieved, but energy waste and heat generation increase
Solution Approach 1:
The patent extracts and removes the transformer component from the power supply system entirely. Instead of using a transformer for voltage conversion, the invention employs a switching regulator circuit with energy storage elements (inductors and capacitors) to achieve voltage transformation through electronic switching and energy transfer, thereby eliminating the energy losses inherent in transformer-based conversion.
Solution Approach 2:
The patent replaces the electromagnetic transformer mechanism with an electronic switching regulation system. The mechanical/electromagnetic field-based voltage transformation is substituted with electronic switching devices (MOSFETs, diodes) and energy storage elements that transfer power through controlled switching cycles, achieving the same voltage conversion function with significantly reduced energy loss.
2Adaptability or versatility
If multiple power supplies are used for different voltage levels, then various voltage requirements are met, but device complexity and cost increase
Solution Approach 1:
The patent implements a universal power supply circuit that can generate multiple voltage levels (e.g., 5V, 3.3V, 1.8V) from a single input voltage through one integrated switching regulator system. The circuit uses a single set of switching devices and energy storage elements that can be controlled to produce different output voltages, eliminating the need for multiple separate power supply circuits and reducing overall system complexity.
Solution Approach 2:
The patent merges multiple power supply functions into a single integrated circuit architecture. Instead of having separate power supply modules for different voltage levels, the invention combines all voltage generation functions into one unified switching regulator system that shares common components (switching devices, control circuitry, energy storage elements), thereby simplifying the power supply system while maintaining the ability to provide multiple voltage levels.
3Power
If transformers are used in power supply systems, then voltage conversion is achieved, but the number of parts and cost increase
Solution Approach 1:
The patent removes the transformer component from the power supply architecture entirely. Voltage conversion is achieved through a switching regulator circuit that uses electronic switching devices and energy storage elements (inductors, capacitors) instead of a transformer, thereby reducing the number of parts while maintaining the essential voltage conversion capability.
Solution Approach 2:
The patent uses small surface-mount inductors and capacitors to replace the large transformer component. These smaller energy storage elements perform similar energy transfer functions but occupy much less space and can be mounted using standard surface-mount technology, reducing both part count and assembly complexity while achieving the same voltage conversion objective.
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 significantly reduces energy waste, increases efficiency, and simplifies power supply designs by eliminating transformers and linear regulators, enabling efficient power delivery to a range of devices while minimizing heat generation and component count.
Implementation Method 1
using capacitors and MOSFETs to regulate power
Implementation Method 2
using capacitors and MOSFETs to regulate power
Data Source
AI summary
An energy efficient apparatus includes a switching device, a frequency dependent reactive device, and a control element is provided. The switching device is coupled to a source of electrical power and includes a pair of transistors and is adapted to receive a control signal and to produce an alternating current power signal. The frequency of the alternating current power signal is responsive to the control signal. The frequency dependent reactive device is electrically coupled to the pair of transistors for receiving the alternating current power signal and producing an output power signal. The frequency dependent reactive device is chosen to achieve a desired voltage of the output power signal relative to the frequency of the alternating current power signal. The control element senses an actual voltage of the direct current power signal and modifies the control signal delivered to achieve the desired voltage of the direct current power signal.