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Magnetic resonance imaging (MRI) systems can take high-resolution cross-sectional perspective images of the human body, providing very useful information for medical diagnosis. The radio frequency pro...[Details]
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The hardware circuit principle is shown in Figure 1. In the specific design, each part should consider the anti-interference problem to minimize the impact of interference on the performance of the...[Details]
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Many MEMS devices, such as accelerometers and mechanical resonance devices, require a vacuum environment to realize their designed functions. However, verifying whether the package cavity has reach...[Details]
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Abstract:
This paper
introduces a data acquisition system based on USB and DSP, which takes advantage of the high-speed transmission characteristics of USB2.0. The overall structure of the ...[Details]
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1. What is fading?
In terms of scope, fading can be roughly divided into three types: large area fading, small area fading and indoor fading. As shown in Figure 1, large area fading refers t...[Details]
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Power semiconductors and reactive components (capacitors and inductors) are ubiquitous in today's electrical equipment. In normal operation, they can cause two undesirable side effects on the AC line ...[Details]
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The full name of RFID is Radio Frequency Identification, which uses radio frequency to realize data transmission between programmable controller (PLC) or microcomputer (PC) and identification, ther...[Details]
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1 Introduction
Bandgap reference sources are widely used in various integrated circuits. With the increasing development of modern integrated circuits, bandgap reference sources play ...[Details]
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The growing global interest in green power has added new variables to the design of power supplies and power adapters. Designers must not only traditionally consider the design specifications requi...[Details]
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With the development of LED technology, the application of LED has expanded from the traditional low-power portable product backlight to medium- and high-power indoor lighting, outdoor lighting, an...[Details]
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Prisons are an important part of the national judicial organs, shouldering the important mission of enforcing laws and disciplines and educating and reforming. The safety of prisons is related to t...[Details]
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The relationship between time and frequency
There is no conceptual difficulty in understanding what happens when a steady-state DC signal is applied to a voltmeter. However, if the signal ...[Details]
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1 Introduction
Under the current situation of power shortage in my country, it is very important to monitor power to ensure safe use of power. The research and transformation of power grid...[Details]
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Ultrasonic tooth cleaning machines have been widely used in the medical field. Most ultrasonic tooth cleaning machines used at home and abroad now use analog oscillation circuits. There are the fol...[Details]
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Preface
EEG (Electroencephalography) is a spontaneous potential activity generated by brain nerve activity and existing in the central nervous system, which contains rich brain activity in...[Details]