Nov 30 2019
Ⅰ The Working Principle and Structure of Thermal Relay1.1 The Role and Classification of Thermal RelayIn the electric drag control system, when the three-phase AC motor runs under abnormal conditions such as long-term under-load and under-voltage operation, long-term overload operation, and lon
Nov 29 2019
Ⅰ IntroductionA differential transformer is an electromagnetic inductive displacement sensor that converts mechanical displacement into an electrical signal. It mainly relies on the displacement of the movable iron core in the cylindrical coil, and establishes a mutual induction relationship be
Nov 22 2019
Ⅰ. IntroductionAny object in the universe can produce infrared radiation as long as its temperature exceeds zero. In fact, like visible light, its radiation can be refracted and reflected, which leads to infrared technology. Infrared detector is widely used in military and civil fields because of it
Nov 22 2019
IntoductionAn operational amplifier, or op-amp for short is a DC-coupled high-gain electronic voltage amplifier with a differential input and, usually, a single-ended output. In this configuration, an op-amp produces an output potential that is typically hundreds of thousands of times larger than th
Nov 21 2019
Ⅰ Abstract In portable electronic devices such as mobile phones, notebook computers, and small video cameras, lithium-ion batteries have developed rapidly due to their sound performance, such as high working voltage, large specific energy, long cycle life, low self-discharge rate, no memory ef
Nov 20 2019
Ⅰ. What is Biosensor?Biosensor is an instrument which is sensitive to biological substances and converts its concentration into electrical signal for detection. Biosensor has the function of receiver and converter. Because enzyme membrane, mitochondrial electron transport system particle membra
Nov 15 2019
Ⅰ. Introduction Diodes are widely used in electronics, such as rectification in power supply, as detection and mixing, etc. in communications, and are often used in voltage regulation and protection in various circuits (such as freewheeling diodes, TVS and so on). Due to the
Nov 13 2019
Ⅰ. Introduction In electronics, an operational amplifier is a circuit unit with a very high amplification factor. In the actual circuit, usually combined with the feedback network to form a certain functional module. It is an electronic device with a special coupling circuit and feedback.
Nov 4 2019
I. Overview1.1 Definition of Inductance Ballast A device that is connected between a power supply and one or more discharge lamps. Its main function is to limit the lamp current to the desired value by a combination of inductance, capacitance or inductance and capacitance. The device can be constru
Nov 1 2019
Ⅰ IntroductionElectronic ballast, a type of ballast resistor, refers to an electronic device that uses electronic technology to drive an electric light source to produce the desired illumination. Another type of ballast resistor which corresponds to this is an inductive ballast. Nowadays, fluorescen
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