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The History of Microscope
Hello, everyone. I am Rose. Today I will show you the history of microscopes. The microscope is used to magnify tiny objects into instruments that can be seen by human eyes. Microscopes are divided into optical microscopes and electron microscopes.
What is a Tactile Sensor?
Tactile sensation is a general term for mechanical stimuli such as contact, sliding, and pressure sensation. Different parts of the skin have different tactile sensations for different things because the number and type of different receptors are distributed. The human face, lips, fingers, and other parts of the body have a lot of receptors, so these parts of the body are very sensitive.
Classification and Application of UV Sensor
The human five senses are "sensors" with very complex and sensitive functions. However, most of the human five senses can only perceive information from the outside world qualitatively, but not quantitatively. In addition, there are many physical quantities that cannot be felt by the human. For example, they can perceive the visible part of the vision, but they cannot perceive the non-visible spectrum with a wider frequency domain. With the help of infrared and ultraviolet sensors, these invisible lights can be sensed.
What is Variable Frequency Driver(VFD)?
Hello everyone, I am Rose. Today I will introduce VFD to you. A variable frequency drive (VFD) is a power control device that uses power electrical technology to adjust the motor's operating power frequency and hence control the motor's speed.
Why is there a Chip Shortage?
Since 2020, the world has experienced an unprecedented shortage of chips. From the soaring prices of the PS5 and Xbox Series X around us to the rows of cars waiting to install chips in car factories, many industries that rely on the use of chips have been severely hit.
What is fluorescent lamp?
Hi, fellas. I am Rose. Welcome back to the new post today. The low-pressure mercury lamp is a conventional fluorescent lamp that employs low-pressure mercury vapor to release ultraviolet photons after being activated, allowing the phosphor to create visible light. As a result, it's a light source with a low-pressure arc discharge.This article mainly introduce definition, working principle and characteristics of fluorescent lamp.
What is Graphics Processing Unit (GPU)?
Hello everyone, I am Rose. Welcome back to the new post today. The graphics processing unit (GPU), also known as the visual processor, display core, or display chip, is a type of microprocessor that specializes in image processing on personal computers, workstations, gaming consoles, and mobile devices (such as tablets and smartphones). After reading this article, you will have a clear understanding of GPU.
Millimeter Wave Radar: Advantages, Types, and Applications
Millimeter wave radar is a radar that works in millimeter wave. Millimeter waves refer to the 30 ~ 300GHz frequency domain (the wavelength is 1 to 10 mm). The wavelength of millimeter waves is between microwaves and centimeters, so millimeter wave radar has some advantages of microwave radar and photoereta.
Always charge the battery to 100%? Stop it!
Hello everyone, I am Rose. Welcome back to the new post today. Mobile phones are no longer just a means of communication; they are also playing an increasingly essential role in business, leisure, and social contact. The most concerning aspect of using a mobile phone is the low battery reminder. This article will show you why your battery draining so fast.
What is a Projector?
Hi, fellas. I am Rose. Welcome to the new post today. A projector is an electronic device that can display images or videos on a screen. Through various interfaces, it may be connected to PCs, VCDs, DVDs, BDs, gaming consoles, DVs, and other devices to play video signals. This article introduces the basis of projectors.
Things You Need to Know about Seven-segment Display
LED segment display is a semiconductor light-emitting device. The LED segment display can be divided into a seven-segment display and an eight-segment display. The basic unit is a light-emitting diode.
What is Visible Light Communication(VLC)?
In some situations, visible light communication (VLC) has considerable advantages over the more generally utilized radio frequency (RF). VLC has gained a lot of attention because of its ability to provide a very accurate and safe indoor positioning system, in addition to the obvious usage of data transmission from one location to another. Implementing a VLC system poses unique hurdles in terms of system integration and power management, particularly for people unfamiliar with the technology. This article will look at some of the uses of VLC, as well as the fundamentals of the VLC positioning system, and how the most recent devices offer a low-risk design approach.
Introduction to Optical Amplifier
An optical amplifier is a subsystem product that can amplify optical signals in optical fiber communication systems. The principle of the optical amplifier is basically based on the stimulated radiation of the laser, which realizes the amplification effect by converting the energy of the pump light into the energy of the signal light.
What is a Transmitter?
In industrial process control, measurement and transmission unit, actuator, and regulator are the three major components of the entire control system. Among them, the measurement and transmission unit is the transmitter, and sometimes the transmitter is actually equivalent to the sensor. The actuator is like a valve, and the regulator is the controller, which is the brain of the entire control system.
What is Vacuum Circuit Breaker?
Hello, I am Rose. Welcome to the new post today. The name "vacuum circuit breaker" comes from the fact that both the arc extinguishing medium and the insulating medium of the contact gap after arc extinguishing are high vacuum; it has the advantages of compact size, light weight, frequent operation, and no arc extinguishing maintenance. This article introduces basis knowledge about vacuum circuit breaker.
Next-Generation Flexible Display Technology - QLED
QLED (Quantum Dot Light Emitting Diodes), is a self-illuminating technology that is still in the development phase of an additional source.
What is Time Delay Relay?
Hello everyone, I am Rose. Today I will introduce Time Relay to you. A Time Relay is an electrical component that is used on a circuit with a lower voltage or lower current to turn on or off a circuit with a higher voltage and bigger current or to regulate a higher voltage or larger power. This article will introduce some basic knowledge of Time Relay.
The Introduction of Car Fuse
A small tubular fuse, which consists of two major parts: a tube body with metal connection terminals on both ends and a metal melt in the tube, is the most widely used in circuit overcurrent safety components. This article introduce its relevant knowledge in car.
What is Metaverse?
The word "Metaverse" from Niel Stephenson, 1992, describes a virtual world parallel to the real world, MetaVerse. Wikipedia's description of the Metaverse is a 3D virtual space that has convergence and physical persistence characteristics through virtual enhanced physical reality, and is based on future Internet, with link perception and sharing features.
What is speaker?
Hi, fellas. Welcome back to the new post today. The speaker is a type of transducer that converts electrical signals to auditory signals. The sound quality is greatly influenced by the speaker's performance. This article introduces some basic knowledge of the speaker.
What is an LTPO Display?
LTPO display is called Low Temperature Polycrystalline Oxide Display. At present, the two main backplane technologies for the small size of OLEDs are LTPS and oxide. LTPO is a new type of backplane technology that combines the advantages of these two technologies to achieve higher charge mobility, stability, and scalability at low production costs.
Silicon carbide (SiC) and gallium nitride (GaN), who is the future of wide bandgap (WBG) materials?
So far, semiconductor materials have gone through three stages of development: silicon (Si) is the first-generation semiconductor, arsenide (GaAs) is the second-generation semiconductor, and wide band gap semiconductor is the third-generation semiconductor (WBG). Silicon carbide (SiC) and gallium nitride (GaN) are two types of semiconductors (GaN). Although there is no saying in this field that "the last wave beats the front wave, the front wave dies on the beach," the third generation semiconductors represented by GaN and SiC are in the early stages of development, and first and second generation semiconductor materials such as Si and GaAs are still available. In the industry, there is a large-scale application. Third-generation semiconductors, on the other hand, have significant performance advantages.
What is Cloud Storage?
Cloud storage is a mode of online storage, that is, storing data on multiple virtual servers usually hosted by a third party instead of dedicated servers. Hosting companies operate large-scale data centers, and those who need data storage hosting can meet their data storage needs by purchasing or renting storage space from them.
How much do you know about Button Battery?
Hello everyone, I am Rose. Welcome back to the new post today. A button battery is a battery that has the appearance of a button but is actually a lithium battery. This article will introduce some knowledge about button battery to you.