However, the Zener Diode or “Breakdown Diode”, as they are sometimes referred too, are basically the same as the standard PN junction diode but they are specially designed to have a low and specified Reverse Breakdown Voltage which takes advantage of any reverse voltage applied to it. The Zener diode behaves just like a normal general-purpose diode consisting of a silicon PN junction and when biased in the forward direction, that is Anode positive with respect to its Cathode, it behaves just like
Applications of Diodes A diode is a two terminal device, widely used in the field of electronics. The smallest of circuits, to the largest, have diodes in them, in one form or the other. The function of the diodes can be explained by using an analogy of an air pump, which only allows the flow of air in one direction. Similarly a diode only allows the circuit to pass current through in one direction; this is done in two conditions. The conditions are a) Forward Bias or b) Reverse Bias Forward
An avalanche diode is a special type of semiconductor device designed to operate in reverse breakdown region. Avalanche diodes are used as relief valves (a type of valve used to control the pressure in a system) to protect electrical systems from excess voltages. Construction of avalanche diode Avalanche diodes are generally made from silicon or other semiconductor materials. The construction of avalanche diode is similar to zener diode except the doping level in avalanche diode differs from zener
Relevant Theory/Background Information (Heading, Level 2) Experiment 2 : Diodes are basic semiconductor devices that will only allow current to flow through them in one direction only, Forward bias. Diodes are made from two differently doped layers of semiconductor material that form a PN junction. When the diode is reverse biased, the positive holes are attracted towards the negative voltage and away from the junction. Likewise the negative electrons are attracted away from the junction towards
Semiconductors were being studied in laboratories as early as the 1830's. The materials were usually poor conductors if heated and often carried photoelectric properties. (Electrical production by shining light on the material.) Soon, this property of changing conductivity would become of vital importance to the world of electronics and communications. (Micron) Common semiconductors include silicon, zinc and germanium; however, silicon is by far the most widely implemented due to its abundance. Also
devices used in different applications of power conversion. The diode is one of the oldest semiconductors devices and is still wildly used today in power electronics. Diodes are found in virtually all power converts in one form or another. For this reason our discussion will be focused on the application of power diodes. Power Diodes are two terminal electronic devices that permit current flow in predominantly one direction. Diodes are composed of differently doped silicon or germanium bounded
In the modern world, we have many devices that help us with our daily lives. These devices include the cellular phone, the music player and many more but none of these devices would exist without the invention of the transistor. The transistor is essentially the most important device ever created. Not because of what it does but because of what size it is. The transistor is absolutely necessary for our day-to-day lives. The transistor was invented by a man by the name of John Bardeen. He invented
Name: Jai Kant UFID- 76691873 Date of Experiment: Mar 13th, 2014 Pre Lab Report Sixth week- Photolithography Problem 1: What is thermionic emission?? Answer: The term thermiionic emission comes from the phenomena of quantumm mechanical tunneling which takes place in some special circumstances. It sometimes happens that electrons with energy less than the barrier height to cross the barrier passing through it instead of over is called tunnneling effect. In semi conductors we can see this in heavily
5. Silicon Controlled Rectifier (SCR): A silicon-controlled rectifier or semiconductor-controlled rectifier is a four-layer solid state current controlling device. It has three junctions, labeled J1, J2 and J3 and three terminals. The anode terminal of an SCR is connected to the P-Type material of a PNPN structure, and the cathode terminal is connected to the N-Type layer, while the gate of the Silicon Control Rectifier SCR is connected to the P-Type material nearest to the cathode. To turn-on of
project involved using a solenoid valve and it was my first experience of Lenz’s Law first hand with a burnt out transistor due to the inductance. In my third semester the course Power Devices and Machines introduced us to power devices like power diodes, BJTs and MOSFETs and the tradeoffs involved with switching time/breakdown voltage/on-resistance. The course also covered the 3 basic DC-DC converter topologies – Buck, Boost, Buck-Boost, rectifiers and inverters. We were introduced to DC brushed
We have reached a point in time where the antediluvian ways have either been completely forgotten or are simply ignored for loss of necessity. This fast progressing world owes everything to the researchers and innovators responsible for the ever changing paradigm of technology. My capability as an engineer, however, to be truly able to understand how the various design aspects behind each innovation, helping me ponder over the numerous ways in which it can be implemented for technological betterment
Comparison between MOSFET And UTB SOI MOSFET Anuj Singh1, Abhisek Gupta1 , Gavish1 1Dronachraya college of Engineering, Gurgaon, India Abstract---The metal–oxide–semiconductor field-effect transistor (MOSFET, MOS-FET, or MOS FET) is a type of transistor used for amplifying or switching electronic signals .It is a four-terminal device with source (S), gate (G), drain (D), and body (B) terminals. The MOSFET generally uses silicon as semiconductor choice but lately chemical compound os silicone and
Photonic Semiconductor Abstract- Photonic semiconductor is deeply integrated in electronic circuit designs and widely used in many sorts of applications, they act as electrical to optical or optical to electrical transducers. This paper aims to discuss various optoelectronic devices; their structure, materials, theory of operation, merit properties and characteristics that recommends them for various applications. I. Introduction Optoelectronics is a branch of Photonics Science concerns with devices
William Gibson said “When you want to know how things really work, study them when they’re coming apart.” By being a technician you get to experience that first hand. A technician is the career where you can express yourself through design, building, reconstructing, maintaining, products, and other materials. An Industrial Electronics Technician prepares diagrams to show how materials are handled and how machines are used. Industrial Electronics Technician is the job fit for someone with a passion
The Effect of Intensity on the Power of Solar Cells This experiment involves changing the intensity of light falling on different cells and measuring their power outputs. Higher intensity of light means that there are more photons hitting the surface of the cell per unit area per second. The more hit the cell, the more rapidly the electrons move across the p-n junction, so the larger the emf produced. If the rate of movement of electrons is inhibited, then the greater
The contribution of engineering including all branches are now undoubtedly keys to glories, enhancement over every respect and enlightened human. Electrical and electronic engineering is one of the dominating engineering branches. Most of the control systems, communication instruments, industrial equipment etc, are without application of electrical and electronic technology can not be surmised. But least developing countries like us have lack of knowledge and amenities to meet the engineering needs
junction, in the shape of a diode was chosen to build the design around. This option filled all the requirements listed in the "Requirement Statement". Optional sensor devices were thermistors, thermometers, and thermocouples. These options were discarded because of high cost. The basic design of the frost box follows: Powered by vehicle ignition Uses a remote temperature sensor mounted close to the road surface Display is a single tri-color Light Emitting Diode (LED) Mounted on the driv
region then this will create an electric field which allows the free electrons to go towards the positive region and repel form the negative region. This is the basic operation of a diode, but when do we start to achieve light? LED’s perform the same way as a normal diode in fact most normal diodes are light emitting diodes but the light produced is so small it can’t be seen. LED’s operate in state known as forward biased. This means that electrons and holes are constantly moving towards the depletion
Computer Mouse The Computer Mouse The computer mouse first came about in the early 1980's. The idea being that the movement from the users hand could be turned into signals that the computer could read moving the cursor around and also allowing the buttons to function when pressed. Today there are a few different types of computer mice on the market. These being the mice that use the traditional tracking ball, the optical mouse and the mouse that has no physical connection to the computer
As the internal temperature of a flashlight increases, how does the temperature effect the output of an led flashlight changes over time. Flashlights first came to be in 1898. The reason why this device is called a flashlight is because of the inefficient zinc-carbon batteries that were originally used in early flashlights that were only able to produce light for small amounts of time, resembling blinking or a flashing light. Flashlights were first given to law enforcement to increase visibility