An autotransformer is not like the traditional voltage transformer. Normally a voltage transformer has two distinct windings. These windings are called the primary and the secondary. But with an autotransformer things are a bit different because it only has one single winding that actually does the job of both the primary and the secondary. Now […]
Explained
Electrical Transformer Working: Explained with Formulas
In this tutorial about transformers I will explain the basics in simple terms. As we know transformers can work without any moving parts inside and it is mainly used to change voltage levels so that we can transfer energy from one circuit to another through electromagnetic induction. We use alternating current (AC) in our homes […]
BJT Open Collector Output Circuit Explained with Calculations
BJT Open Collector Outputs are really starting to show up more and more in the world of digital chip design, operational amplifiers, and those advanced micro-controller projects we love to tinker with, like Arduino. We often use the BJT open collector outputs to connect with other circuits or to power high-current loads such as indicator […]
Understanding FET Current Source: Explained with Formulas
An FET Current Source is a specific kind of active circuit which employs a Field Effect Transistor to provide a steady and a constant amount of current to a circuit. Now you might wonder why it is important for us to have a constant current. Constant current sources and their opposite, which we call current […]
Darlington Transistor Working Explained with Calculations
In this post you will learn about this amazing BJT device called the Darlington Transistor. It was named after this genius engineer, Sidney Darlington, who came up with the idea. Basically it is like a special combo of two regular NPN or PNP bipolar junction transistors (BJTs) that are hooked up in a clever way. […]
How NPN Transistors (BJTs) Work: Explained with Calculations
In the previous tutorial we took a good look at the standard Bipolar Junction Transistors, which is often referred to as the BJT. We learned that it actually comes in two main types which are known as the NPN configuration, standing for Negative-Positive-Negative, and the PNP configuration which means Positive-Negative-Positive. So basically we have two […]