The crucial thing which differentiates Centre Tapped and Bridge Rectifier is the design architecture. Centre tapped Rectifier consists of two diodes which are connected to the centre tapped secondary winding of the transformer as well as with the load resistor. Bridge rectifier comprises of 4 diodes which are connected in the form of Wheat stone bridge and thus provide full wave rectification. The advantage of using Bridge rectifier is that no centre tapping is required. Thus, we can … [Read more...] about Difference between Centre Tapped and Bridge Rectifier
Difference Between Analog and Digital Communication
The crucial difference between Analog and Digital Communication is that Analog communication uses analog signals for transmission and reception of data while digital communication uses digital signals for transmitting and receiving data. Analog signals are the continuous time-varying signal while digital signals are those which consist of discrete values. Digital communication provides various advantages such as it is immune to noise and distortion as it possesses greater signal to noise … [Read more...] about Difference Between Analog and Digital Communication
Difference between LED and LASER
The significant difference between LED and LASER lies in the working principle. LED emits light as the consequence of charge carriers recombination across P-N Junction, while LASER emits light as a result of photons striking the atom and compels them to release the similar photon. A laser works on the principle of stimulated emission and LED works on the principle of Electro-luminance. Thus, in LASER every released photon strike another atom to release similar photon and therefore, the beam … [Read more...] about Difference between LED and LASER
Difference Between Zener and Avalanche Breakdown
The crucial difference between the Zener and Avalanche breakdown is the operating mechanism. Zener breakdown occurs when the high electric field is created across the junction. On the other hand, Avalanche Breakdown occurs in the device due to the collision of electrons moving at high speed. In Zener breakdown, the increase in reverse voltage causes the expansion of the depletion layer. The more the width of the depletion region the more will be the electric field across the … [Read more...] about Difference Between Zener and Avalanche Breakdown
Difference Between Half Wave and Full Wave Rectifier
The Half Wave and Full Wave Rectifier have significant differences. A rectifier converts AC voltage into Pulsating DC voltage. A Half-Wave rectifier is an electronic circuit which converts only one-half of the AC cycle into pulsating DC. It utilizes only half of AC cycle for the conversion process. On the other hand, Full wave rectifier is an electronic circuit which converts entire cycle of AC into Pulsating DC. The Half-Wave Rectifier is unidirectional; it means it will allow the conduction … [Read more...] about Difference Between Half Wave and Full Wave Rectifier
Bleeder Resistor
Definition: Bleeder Resistor is a standard resistor which is connected in parallel with the capacitor of the filter circuit to provide discharging of the capacitor. If the capacitor is not discharged properly, then it may lead to an electric shock to the person operating it. Thus, to ensure the safety of the operators working with it, it is necessary to connect a resistor in parallel with the capacitor. Significance of Bleeder Resistor To understand the significance of bleeder resistor, … [Read more...] about Bleeder Resistor
Secondary Electron Emission
Definition: Secondary Electron Emission is the phenomenon in which the primary electrons strikes the free electrons in the metal and impart their energy to them so that they can leave the metal surface. The electrons emitted by this process are called secondary electrons. And this process is called Secondary emission. Visualization of Secondary electron Emission Consider an electron source and an emitter made of metal is placed inside the evacuated tube filled with inert gases. It needs to be … [Read more...] about Secondary Electron Emission
Thermionic Emission
Definition: Thermionic effect or Thermionic Emission can be defined as the phenomenon in which electrons are emitted from the surface of the metal when heat energy is applied to the metal. The word Thermionic is formed from the words Thermal and ions. Thermal means heat and ions are charged particles. Thermionic emission depends on three factors, temperature of the metal surface, area of the metal surface and last but not the least the work function of the metal. Significance of Thermionic … [Read more...] about Thermionic Emission
Photoelectric Emission
Definition: Photoelectric emission is the phenomenon by which intensity of light is utilized for the removal of the electron from the atom. The word Photoelectric is formed from two words photo which means light (Photons) and electric which is related to electron. Thus, light radiation or photons impart their energy for electron emission. That’s why it is called photoelectric emission. Significance of Photoelectric Emission Photoelectric emission is significant for determining the intensity of … [Read more...] about Photoelectric Emission
Hexadecimal Number System
Hexadecimal Number System forms the backbone of the digital system such as microprocessors, microcontrollers etc. It is a number system which consists of 16 elements, in which 10 numbers from 0 to 9 and 6 alphabets from A to F are used. Any other number can be represented in the hexadecimal number system with the help of the combination of these 16 elements. The word hexadecimal is formed from two words, “HEX” and “DECIMAL”. Hex means 6 and decimal mean 10, the sum of these two is 16 which … [Read more...] about Hexadecimal Number System