In the initial period of 1856, discharge tubes came into existence, but discharge lamps existed in the market in the 1930s. Initially, a French scientist Jean Picard noticed that barren space in the mercury barometer shined as the mercury wiggled when he was carrying it. Many researchers along with Francis Hauksbee attempted to know the actual phenomenon behind it. Francis initially showed a discharge lamp in the year 1705. He demonstrated that either … [Read more...]
What is Closed Cycle Gas Turbine : Working & Its Efficiency
From the past few decades, this closed cycle gas turbine has gained huge prominence because of its crucial involvement in the worldwide energy requirements. In the year 1935, the first patent for closed cycle gas turbines was announced but the commercial usage of these happened in the year 1939. Conventionally, these gas turbines were mostly employed as external combustion engines using brown coal and bituminous coal. But these were supplanted by open … [Read more...]
What is Self Inductance : Theory, Examples & Applications
In the domain of electronics and electromagnetism industries, inductance is the movement of the electrical conductor to obstruct the flow of current. The current movement develops a magnetic field across the conductor and this field strength is based on the current magnitude and any current variations. From the principle of Faraday’s law of induction, any deviation in the magnetic field along the circuit generates an EMF voltage and this is termed as … [Read more...]
What is a Resistor : Construction, Properties and Its Applications
The resistor is one of the fundamental elements in engineering. As compared to other fundamental elements inductor and capacitor, the resistor is used in almost all electronic and electrical circuits. It is also known as a linear, bilateral, and passive element. The resistor is available in a different range of values, starting from milliohms to megaohms. It also dissipates a lot of heat when it carries current. Resistor value depends on the resistivity of … [Read more...]
What is Permanent Magnet Stepper Motor : Working & Advantages
In the industrial domain progression, motors hold a very crucial role and their application is enhancing day-by-day. Not only in the power industries, but in many control applications, motors are playing a critical role. With the enhancement of motor control, the usage and implementation also augment every year. So, the stepper motor is a kind of control motor which operates on positioning control having no feedback loop. Stepper motors were formed at the … [Read more...]
What is a Capacitor : Construction & Its Working
The word capacitance is derived from capacity, capacity is to contain, or store. a capacitor refers to a device that is capable of storing electrical energy. Unlike the storage of water which can be stored in ponds, lakes, tanks and our seas which are our almost unlimited reservoir of water we have very limited options for direct storage of electrical energy. As a matter of fact, we have only one option as a battery to store electrical energy in the form … [Read more...]
What is Varistor : Working and Its Applications
Usually, in electronic circuits, we encounter currents and voltages of the order of milliamperes and millivolts. Electronic circuits have very high input impedance and are very sensitive. Our usual methods of over current protection or over-voltage protection are not applicable here. We need a device that is quick and sensitive. A varistor is a device that meets our requirement and controls voltage spikes very effectively thus protecting our circuit. The … [Read more...]
What is a Multistage Amplifier : Design, Types & Its Applications
In many of the practical applications, the output of a single-stage amplifier is not sufficient to provide the required bandwidth or gain. So, the enhance either power or voltage gain, the multistage amplifier is required. These kinds of amplifier circuits hold the ability to offer augmented specifications and enhance the circuit performance and so preferred as fundamental building circuits for the development of complicated amplifier networks. This … [Read more...]
What is Ceramic Capacitor : Construction & Its Working
The word capacitor comes from ‘capacity’ and a capacitor has the capacity to store electrical power. Capacitors are an integral part of electrical circuitry, in power circuits, their role as power factor improver and power storage device cannot be underemphasized. After batteries, the capacitor is the only device that can store electrical power. Capacitors are also used as power quality improver. However, in electronic circuitry, capacitors have many more … [Read more...]
What is an Ohmmeter : Working Principle & Its Types
Initially, ohmmeters were evolved based on the design construction of a meter known as “Ratiometer”. Ohmmeters under this classification only calculate the value of resistance because they are not simply integrated into the multimeter construction. Insulation testers which depended on a hand moved generator also works on a similar operation. This makes sure that indication was completely autonomous of the developed voltage. Following this, various designs … [Read more...]