The term LED stands for Light Emitting Diode. In electronic circuits, the LED is a type of PN-junction semiconductor diode, which can emit light when current flows through the circuit in the forward direction. This indicates whether the electronic device is working or not. LEDs are widely used in various applications such as in cars, bikes, home appliances, offices, lighting, mobiles, televisions, etc. Usage of Multi-colored LEDs in the device reduces, cost, power and emits more than one colored … [Read more...]
What is Cascode Amplifier : Circuit & Its Working
Cascode is a technique implied to improve the performance of the analog circuits. The same technique can be applied to transistors and the vacuum tubes to make the circuit better performance-wise. The word cascode is initiated in the year 1939 by Frederick Vinton Hunt's and Roger Wayne Hickman's article during the discussion of voltage stabilizer applications. The discussion was about to propose a method to replace the pentode by cascoding two triodes. In cascoding, two transistors are used … [Read more...]
What is a Varactor Diode : Working & Applications
In the digital electronic circuits, one of the basic essential devices is diodes. A diode consists of two terminals. These two terminals connected to the supply results in conduction. The way the terminal sare connected makes it classified as a forward-biased diode or reverse-biased diode. In forward bias, the diode allows the current to flow through it. During reverse bias, it blocks the flow of current. This reverse biasing is used in the case of the varactor diode. Based on the … [Read more...]
What is Schmitt Trigger : Circuit & Its Working
A comparator circuit with a large gain of open-loop requires a small amount of noise to trigger the circuit. If such comparators are used as zero-crossing detectors and get affected by false triggering leads to unnecessary problems. This may lead to the false indication of zero crossings of the noise signal rather than the actual signal. This unnecessary switching of levels can be avoided by using a circuit known as Schmitt trigger. This circuit was invented by the scientist in America otto H. … [Read more...]
Zener Breakdown and Avalanche Breakdown
A diode is an electronic component that consists of two electrodes. These two electrodes are the positive electrode and the negative electrode. These diodes are composed of semiconductor materials like germanium, silicon, and selenium. The most important property of diodes is that they are capable of conducting current in one direction only. Diodes are used as voltage regulators, switches, rectifiers, etc. A PN junction diode is a type of diode that has a negative side (n) and a positive side … [Read more...]
What is a Solar Pump : Working & Its Applications
The impact of low carbon emission on the environment is now evident much more than it was before. Utilizing renewable sources of power like solar energy will get a lot of impetus in days to come. Irrigation through pumping is a must for our agriculture growth. By using solar energy for pumping we can grow food without harming our environment. It may be added that India being a tropical country has an abundance of sunshine, which, can cost-effectively be used for generating power to meet our … [Read more...]
What is an Electrostatic Precipitator & Its Working
There are a lot of industries that generate various waste particles while carrying out various manufacturing processes. One such type of waste is particulate matter. Such type of waste will have to be removed before the gases are released into the environment. Otherwise, they may pose a serious threat to the environment and also cause various health hazards like lung infection and bronchitis. Fine elements having a size of fewer than 2.5 microns and these are difficult to remove. They cannot be … [Read more...]
What is Circuit Switching : Types & Its Characteristics
Circuit switching is one of the techniques involved in switching. In the field of communication and networking, there is a requirement of transmitting data all over the world. To transfer the data the basic step is to find a route. There are multiple ways or we can say paths to transfer the data. To choose the best possible path so that the data can be routed efficiently is defined as Switching. Multiple devices should be connected which can be switched to transmit the data. The connection can … [Read more...]
What is Control Unit : Components & Its Types
The Central Processing Unit is the most important part of a computer. It is responsible for regulating the various operations which are undertaken by a computer. A Central Processing Unit or the CPU has three main parts which are the Arithmetic Logic Unit (ALU), the control unit (CU), and the Memory Unit. The control unit is an important component of the CPU. It directly controls the functions of the memory unit, the ALU, and the input and output devices. It handles all the signals of the … [Read more...]
What is an Isolation Amplifier : Working & Its Applications
Sometimes, while performing electrical operations, it becomes important for us to isolate one part of the circuit to another to prevent excess loss of energy. For that reason, we use an isolation amplifier which acts as an isolating device. The main purpose of the isolation amplifier is to electrically separate the circuit which comes before the amplifier from the circuit which comes after the amplifier. So, basically we can say that an isolation amplifier can be used to give ohmic isolation … [Read more...]