A complete Electrical Engineering portal
Resistors are the basic building blocks of a circuit. They are used in circuits as voltage dividers, current limits, termination for communication links, etc. It is important to know how to calculate their ohmic value by referring to the color codes of the resistor. Here is a simple and easy-to-use resistance calculator. Resistance calculator tool … Read more
The bipolar junction transistors exist as NPN and PNP types. This article intents to help you understand the difference between these two types and how to use them in a circuit. Also, this will be helpful to automation engineers and instrumentation engineers in understanding 3 wire sensor connections. Transistors are made by combining two types … Read more
Proximity sensors are used to detect the presence of an object without any direct contact. It is used as an alternative to the limit switches. There are various types of proximity sensors available in the market. Their invention led to a revolution in the field of industrial automation and robotics. Proximity switches were developed by Wilfried … Read more
A magnetic core and windings are two basic parts of a transformer. The windings are wound over the core and the core encircles the windings. Based on the way the core and the winding are made, transformers are classified into two types: Core type and shell type transformers. Both of them refers to the arrangement … Read more
What is switchgear? Any mechanical switching devices used to make or break the current flow and their combination with measuring and control devices are known as switchgear. This includes circuit breakers, contactors, isolators, fuses, relays etc. This articles intents to describe the different switchgear in short and their switching phenomena. Circuit breaker A circuit breaker, … Read more
A transformer is the device that makes power systems flexible, scalable and help save cost by reducing power loss. Here you can learn the selection and sizing of transformers and code & standards related to transformers. Transformer Nameplate Selection and sizing of a transformer is the process of determining the basic transformer parameters such kVA, … Read more
An autotransformer is a single-winding electrical transformer. It is also known as variac or dimmer stat. It is made of a single-winding coil. This single-winding setup makes them cheaper, more efficient, and have better voltage regulation than normal transformers. They are much more useful in cases in which the voltage ratio is less than 2 … Read more
The basic parts of a transformer are the core, the primary winding, and the secondary winding. Apart from these, there are various other components such as insulation, transformer oil, cooling arrangements, protection relays, enclosure, etc present in larger transformers. Let’s discuss the working principle of a transformer before diving into the topic. Transformer – Principle … Read more
An earth leakage can represent a danger to life or property if it is not located and mitigated. Studies have revealed that at least 500 people experience electrocution every year in the US alone. Earth leakage relays can be helpful in sensing and mitigating such incidents. What is earth leakage? Earth leakage is an unindented … Read more
Circuit breakers are employed to automatically switch off a circuit or a load whenever any abnormalities in current flow are detected. This functionality of the circuit breakers is known as ‘Trip’. By doing so, circuit breakers are preventing fire or other damages caused to the circuit. Here are the major reasons behind your circuit breaker … Read more
