The various electrical machines and panels are fixed onboard to sail the ship from one place to another place very efficiently and safely. To avoid the breakdown during sailing, these machines require regular maintenance. That means, measuring electrical quantities like resistance, voltage, and current will help to analyze the proper condition of the electrical machine. For this measurement, different instruments are used like a PMMC instrument. PMMC instruments are one of the simple and … [Read more...]
What is Hot Wire Anemometer & Its Working
A hot wire anemometer is one kind of device, used to measure the speed and direction of the wind. These are used as wind speed instruments in the meteorology sector. In the 15th century, Leon Battista Alberti invented the first mechanical anemometer. After several modifications, John Thomas Romney Robinson in 1846, improved the design by using cups and mechanical wheels. Anemometers are classified into two types like pressure type and velocity type. The hot wire anemometers are the velocity … [Read more...]
What is a Capacitive Transducer & Its Working
A capacitive transducer is one kind of device, used to change the energy from one form to another. Generally, transducers are frequently used at the boundaries of control systems, measurement, & automation, wherever electrical signals are changed from different physical quantities like force, energy, light, torque, position, motion, etc. There are two kinds of transducers like electrical and mechanical. Electrical transducers convert the physical quantities to electrical whereas … [Read more...]
What is a Freewheeling Diode : Circuit & Its Working
In different circuits, a switching element switches at a fixed frequency to manage the load’s voltage. Once the switching element activates then an extremely high voltage spike because of the stored energy within the magnetic field of the inductive load comes into view across the switching element terminals in switch OFF condition so, it may destroy the switching element. To disperse this energy, the freewheeling diode is utilized. When the switching element is deactivated then the load can … [Read more...]
Types of Resistors & Their Applications
A resistor is one kind of passive component used to obstruct the current flow within electrical and electronic circuits. There are different types of resistors available in the market which are used based on the requirement. The best examples of resistive materials are Mica, Glass, Rubber, Wood, etc. The unit of resistance is ohm where 1 ohm = 1V/1A. And also, these components play a key role in electronic circuits like signal levels can be adjusted, current flow can be reduced, divide … [Read more...]
Triggering of Thyristors or SCR Triggering
The SCR turn ON method like SCR triggering or triggering of the thyristor is used to bring a silicon-controlled rectifier from forward blocking mode into conduction mode. In conduction mode, SCR can be characterized through less voltage drop, the impedance across anode, cathode & high anode current. The anode current value can be determined through the load and it permits the flow of current. So, a silicon-controlled rectifier in forward conduction mode is known as its ON state & it … [Read more...]
What is Avalanche Diode : Working & Its Applications
A semiconductor diode like an avalanche diode is similar to a Zener diode and this diode operates within the region of reverse bias. The symbol of this diode is the same as a Zener because it is one kind of PN junction diode. The designing of this diode can be done in such a way that, it can resist the breakdown of avalanche without damaging when the reverse current suddenly increased because, when the current increases suddenly within the PN junction diode, then it can damage. To overcome … [Read more...]
What is Digital Timer : Circuit & Its Working
At present in our daily life, Timers play a key role which is used in watches, clocks, or phones. With hectic plans, most people easily forget many schedules. So a digital timer is used to give an alert to remind you of your schedules like checking BP or take medications and many more. But in the industrial or commercial fields, these are not applicable. For new revolutions in electronic devices, the electronic industry has paved way for timers, loggers & controllers. So from that, the … [Read more...]
What is Drift Velocity of an Electron & Its Derivation
The drift velocity concept can be understood by observing the random movement of electrons around the conductor. These electrons keep on traveling in the conductor in a random way through random velocities. Sometimes, a conductor may be subjected to an electric field & consequently some type of electrical energy is used on the randomly moving electrons except in the field direction. This field pushes the electrons to control in the high potential direction while maintaining their chances … [Read more...]
What is a Crystal Diode : Construction & Its Working
A diode is a semiconductor device through which current supplies in one direction only. The initial diodes were crystal diodes which are used as rectifiers in radio kits. In this diode, a weak signal was fed into the crystal material using a very fine wire namely the cat's whisker. The crystal material in the diode removes the high-frequency carrier signal of radio by allowing the elements of the signal through the audio data to approach through clear. The crystal material was packed with … [Read more...]