In general, we use a lot of electrical and electronic components while making the circuits and electronics projects. The basic components mainly include resistors, capacitors, transistors, diodes, LEDs, inductors, thyristors or SCR (silicon controlled rectifiers), ICs (integrated circuits), and so on. Let us think the rectifiers which are categorized into two types namely diodes (uncontrolled rectifiers) and thyristors (controlled rectifiers). Actually, many engineering students, electronic hobbyists wish to know the basic function of an electrical and electronics components. But, here in this article gives an overview of the silicon controlled rectifier and its characteristics.
The 8051 microcontroller was designed in the year 1980 by Intel. Intel re-intended 8051 microcontroller was employed CMOS technology and also the latest edition came into existence with a letter C in the name of the title, for design; microcontroller 80C51 rather than NMOS technology. There are two buses in 8051 microcontrollers one for data and other for a program. This microcontroller includes an 8-bit accumulator and the 8-bit processing unit. It also includes 8-bit B register as majorly functioning blocks and microcontroller programming is done with embedded c language using Keil software. For internal working and processing microcontroller comes with inbuilt RAM. This memory is used for storing the temporary data. It is the random memory that is; its data can get be lost when the power supply to the microcontroller turned OFF. There are various applications with this microcontroller. So, 8051 microcontroller projects have great significance in engineering. [Read more…]
The thermal image sensor is a benefit to the equipped forces such as the army, air force and navy as of its day and night working ability to do well in all weather conditions. Thermal detectors capture the IR radiation produced by all substances above complete zero temperature. The temperature differences of the captured pictures are signified as a thermogram. With the beginning of IR detector technology, the immense cooled thermal detectors have moving components and difficult cryogenic temperatures have distorted into small, thereby assembling systems harsher requiring less protection.
Thermal imaging has a variety of advantages as well as a large number of applications in defence and military. It is commonly used by the army and navy for border surveillance, law enforcement, in ship collision avoidance and also guidance systems. In the aviation industry, it has very much mitigated the hazards of flying in low-light and nighttime situations. They are extensively used in military aviation to recognize, place and goal the enemy forces. In recent times, they are also being included in civil aviation for health observing of aircrafts.
In RS232 Serial Communications, the abbreviation of RS stands for recommended slandered and the number 232 states the modern version. The serial communication systems were classified into different types, and that are used to transfer the data over large distances through some range of information cable. In telecommunications, the RS232 port formally describes the signals connecting between the DTE (data terminal equipment) and DCE (data circuit terminating equipment).The DTE is computer terminal and DCE is modems, or controllers etc.
The usage of an internet and online applications have extremely improved currently and become an essential part of our daily life. For different applications like internet banking, personal information passing and online financial transactions top notch security are the prerequisite. But, in the current past cyber-attacks have become very mutual and are posing vast tasks to both the users and service workers similarly.The modus operandi of the main cyber robbery racket is takeover user credentials, especially username and key to break the security of user-based verification systems. To overcome this problem, security system with the smart card authentication is secure and consistent authentication system that safeguards user authorizations and eliminates the problems like memorizing multitude of user names and passwords.