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...]
What is Galvanometer – Construction & Its Working
After the demonstration of Hans Christian Ørsted in the year 1820 that is, an electric current can turn aside a magnetized needle, the first galvanometer was designed. This device was designed by physicist Johann Schweigger & German mathematician and they named it a multiplier. Basically, a galvanometer includes a needle, connected to a coil so that the coil can move freely in a magnetic field. This field can be created through one or more permanent magnet poles. Once electricity is … [Read more...]
What is a Pressure Transducer : Types & Its Working
In fluid power circuits, pressure is an essential factor. A pressure transducer is used to change the pressure of a fluid into an electrical signal to check & control the pressure within electronic control systems. Once these transducers are connected to a suitable electrical source then it will generate an electrical output signal like current frequency or voltage which is proportional to the force. There are different kinds of transducers are available which are used to generate linear … [Read more...]
What is Cathode Ray Oscilloscope (CRO) & Its Working
Karl Ferdinand Braun has researched the concept of the elastic strings of oscillations. He used the CRT (cathode ray tube) as an electron gun through a fluorescent screen. This screen emits a spark of light. So he built the first oscilloscope namely Braun’s electrometer. Karl Braun demonstrated the first model of oscilloscope in the year 1897. Since its development, the CRO (cathode ray oscilloscope) is an essential type of oscilloscope that are mainly used for measuring different electrical … [Read more...]