Analog Current Regulation for High Current Radiation Sources
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Solution Overview
Problem
Current regulation systems for high current radiation sources, such as IPL and laser sources, are often complex and expensive due to the use of programmable components like FPGAs, which increases implementation costs and complexity.
Innovation Solution
A high current radiation system that employs an analog circuit with an operational amplifier-based comparator to generate control signals for a power transistor, enabling or disabling current flow based on user-defined and measured current levels, without relying on programmable devices, thereby simplifying the system and reducing costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If programmable components such as FPGAs are used for current regulation, then control flexibility and precision are improved, but device complexity and manufacturing cost increase
Solution Approach 1:
The patent replaces programmable electronic components (FPGAs, microcontrollers) with an analog control circuit that uses operational amplifiers and transistors to achieve current regulation. This substitution of electronic/mechanical systems eliminates the need for programming and complex digital logic while maintaining precise control through analog feedback mechanisms.
Solution Approach 2:
The patent employs standard, readily available analog components (operational amplifiers, transistors, resistors, capacitors) that are inexpensive and widely available, replacing expensive programmable components. These standard components can be easily replaced or adjusted without requiring specialized programming knowledge or equipment.
2Adaptability or versatility
If programmable components such as FPGAs are used for current regulation, then control flexibility is improved, but manufacturing cost increases
Solution Approach 1:
The patent replaces programmable electronic components (FPGAs, microcontrollers) with an analog control circuit that uses operational amplifiers and transistors to achieve current regulation. This substitution of electronic/mechanical systems eliminates the need for programming and complex digital logic while maintaining precise control through analog feedback mechanisms.
Solution Approach 2:
The analog control circuit is designed to be universally applicable to different radiation sources and current regulation requirements by adjusting component values (resistors, capacitors) rather than requiring different programmable devices. The same basic circuit topology can serve multiple functions and applications.
3Device complexity
If analog circuits are used instead of programmable devices, then device complexity and cost are reduced, but control precision may be compromised
Solution Approach 1:
The patent implements a feedback mechanism where the output current is monitored and fed back to the analog control circuit through a sensing resistor and feedback network. This closed-loop feedback allows the operational amplifier to continuously adjust the control signal to maintain precise current regulation despite variations in load or power supply conditions.
Solution Approach 2:
The patent replaces programmable electronic components (FPGAs, microcontrollers) with an analog control circuit that uses operational amplifiers and transistors to achieve current regulation. This substitution of electronic/mechanical systems eliminates the need for programming and complex digital logic while maintaining precise control through analog feedback mechanisms.
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 effectively regulates current levels in high current radiation sources, ensuring precise control and efficiency while eliminating the need for expensive programmable components, thus reducing system complexity and costs.
Implementation Method 1
an analog circuit to generate, based, at least in part, on an input signal representative of the present current level delivered to the high current radiation source and a user-controlled input representative of a desired current level, an output signal to control the current level
Implementation Method 2
The current driver may include a power transistor to enable flow of high current level provided from a power source to the radiation source when the power transistor is actuated by a logical high signal, and to disable current flow through the power transistor when the power transistor is actuated by a logical low signal
Data Source
AI summary
Disclosed is a high current radiation system. The system includes a high current radiation source to generate radiation and an analog circuit to generate, based, at least in part, on an input signal representative of the present current level delivered to the high current radiation source and a user-controlled input representative of a desired current level, an output signal to control a current level to be delivered to the high current radiation source. The system further includes a current driver to control the current delivered to the high current radiation source based, at least in part, on the output signal of the analog circuit.