Electrical4U 
What is a Signal Generator? Signal generators are electronic devices that produce electronic signals and waveforms. These signals can be repeating or non-repeating, depending on the application. Different types of signal generators have varying capabilities and functions. They come in different designs, sizes, and parameters to serve a wide range of purposes. Signal generators are … Read more
Steam power plants are crucial for power generation in the Asia Pacific. Improving their efficiency, even slightly, can save fuel and reduce greenhouse gas emissions significantly. It’s important to explore every possible way to increase the efficiency of the steam power cycle. The idea behind any improvement or modification is to increase the thermal efficiency … Read more
What is a Wave Winding? A wave winding (also known as a series winding) is defined as a type of armature winding in DC machines, alongside lap winding. In a wave winding, we connect the end of one coil to the start of another coil of the same polarity. The coil side (A – B) … Read more
What is a Frog Leg Winding? A frog leg winding is a combination of a multiplex wave and a simplex lap winding in the same slots. It retains the advantages of both lap windings and wave windings without their inherent disadvantages. Lap and wave windings each have an equal number of parallel paths, which are … Read more
In shunt wound DC generators, the field windings are connected in parallel with the armature conductors. In these types of generators the armature current (Ia) splits into two parts: the shunt field current (Ish) flows through the shunt field winding, and the load current (IL) flows through the external load. Three most important characteristic of … Read more
When an alternating current flows through a coil, it creates an alternating magnetic field around it. If a second coil is placed within this magnetic field, it induces an alternating emf in the second coil due to Faraday’s law of electromagnetic induction. This emf can be used to power a load. In this setup, the … Read more
There are various types of DC generators available for several types of services. The applications of these DC generators based on their characteristic are discussed below: Applications of Separately Excited DC Generators These type of DC generators are generally more expensive than self-excited DC generators, because they need a separate excitation source. This restricts their … Read more
Performance curves of a DC generator are graphs that show how the output voltage changes as the load current varies from no load to full load. These are also known as characteristic curves. These curves help us understand the voltage regulation of different types of DC generators. Better performance is indicated by lower voltage regulation. … Read more
In a control system, energy storing elements like inductors and capacitors are often present. These elements affect the system’s energy state, causing it to take time to transition from one state to another. This transition period is called the transient time, and the changes in voltages and currents during this time are known as the … Read more
Sometimes, we need to switch on electrical loads using a computer program. For example, in a power plant, you might want to switch on a circuit breaker remotely. This can be done using a microcontroller. Let’s discuss how to make a Remote Control Circuit Breaker Using a Microcontroller. For this remote-controlled circuit breaker we will … Read more