Electrical4U 
What is a Regulated Power Supply? A regulated power supply transforms unregulated AC (Alternating Current) into a stable DC (Direct Current). It guarantees consistent output despite variations in input. A regulated DC power supply is also known as a linear power supply, it is an embedded circuit and consists of various blocks. The regulated power … Read more
What is a Transducer? An electrical transducer is a device which is capable of converting physical quanties into a proportional electrical quantity such as voltage or electric current. Hence it converts any quantity to be measured into a usable electrical signal. This physical quantity which is to be measured can be pressure, level, temperature, displacement … Read more
An op amp is extensively used as the main building block of a Digital to Analog Converter (DAC). A DAC is an electronic device in the form of an IC that converts digital signals to equivalent analog signals. DACs can be realized in many ways. One popular DAC circuit is the binary weighted ladder.This DAC … Read more
What is the Time Constant? The time constant – usually denoted by the Greek letter τ (tau) – is used in physics and engineering to characterize the response to a step input of a first-order, linear time-invariant (LTI) control system. The time constant is the main characteristic unit of a first-order LTI system. The time … Read more
What is a Line Reactor? A line reactor, also called an electrical reactor or choke, is a coil used with variable frequency drive (VFD). As current flows through the coil, it creates a magnetic field that slows the rise of current, reducing harmonics and protecting the drive from power surges and transients. Types of Electrical … Read more
The steam turbine is a favourite prime mover in a steam power generating plants. The steam turbine may be of capacity from 5 megawatts 2000 megawatt. The advantages of a steam turbine over a diesel engine are as follows. Steam enters the turbine at high pressure and temperature. After turning the rotor, the steam exits … Read more
What is a Dual Network? Two electrical networks are said to be dual networks if the mesh equations of one network is equal to the node equation of the other. The dual network is based on Kirchhoff Current Law and Kirchhoff Voltage Law. Applying Kirchhoff Voltage Law in the network A, above we get, Applying … Read more
What Does an Economizer Do in a Boiler A boiler economizer (also known as an economizer) are mechanical devices intended to reduce energy consumption or perform a useful function such as preheating a fluid. A boiler economizer is essentially a heat exchanger that makes a system more energy efficient by taking enthalpy in fluid streams … Read more
An operational amplifier or op amp is a DC coupled voltage amplifier with a very high voltage gain. Op amp is basically a multistage amplifier in which a number of amplifier stages are interconnected to each other in a very complicated manner. Its internal circuit consists of many transistors, FETs and resistors. All this occupies … Read more
To achieve maximum fuel combustion efficiency, complete combustion of fuel inside the boiler furnace is essential. This requires a sufficient supply of air and proper mixing with fuel. It’s also important to maintain an adequate supply of fuel particles for proper burning.The combustion process should consistently produce and maintain the designated temperature of the steam … Read more