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Archive: Category «Electrical Lectures»

What can a PLC do? Why do we use them?

“PLC” means “Programmable Logic Controller”, that’s clear. The word “Programmable” differentiates it from the conventional hard-wired relay logic. It can be easily programmed or changed as per the application’s requirement…. Read more

Jul 15, 2015 | Edvard

What can a PLC do? Why do we use them? (on photo: SIEMENS PLC Simatic S7-1500; credit: totallyintegratedautomation.com)

4 Main Means For The Generation Of Reactive Power

The four main means for the generation of reactive power are: Synchronous alternators Synchronous compensators (SC) Static var compensators (SVC) and Banks of static capacitors Synchronous alternators are the main… Read more

Jun 29, 2015 | Edvard

4 Main Means For The Generation Of Reactive Power

Back To School – Let’s Calculate Current I3

Referring to the following circuit, calculate direct current I3: Using Kirchhoff’s laws; Using nodal analysis; Applying Thévenin’s theorem at nodes A and B. – KCL stands for Kirchhoff’s Current Law… Read more

Apr 10, 2015 | Edvard

Miniature Circuit Breakers (MCBs) For Beginners

This technical article focuses on the widely used miniature circuit breakers rated for 240 V or less. These are smaller and lower-rated versions of industrial-grade molded-case circuit breakers rated for… Read more

Jan 26, 2015 | Edvard



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