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 […]
Explained: Bipolar Junction Transistors (BJTs) and Configurations
If we look at the diodes, their internal construction look fairly straightforward. They are internally built using two sections of semiconductor material, forming what is called a PN-junction. But when we talk about a bipolar junction transistor or a BJT, things get a little more advanced. It involves adding an extra layer of semiconductor material […]
Time Constant Tau (τ): Explained with Calculations
In this post I will explain you the concept of Tau, or τ, which is the Greek letter we often see in electrical and electronic calculations. It represents what we call the “time constant” of a circuit which is basically a measure of how the circuit behaves over time. Now, when we talk about a […]
Passive RC Integrator Circuit: Explained with Calculations
In a passive RC integrator circuit, we see that the input is actually connected to a resistor, while the output voltage is measured across the capacitor. This setup is basically the complete opposite of what goes on in an RC differentiator circuit. In RC integrator, when we make input signal high, the capacitor then starts […]
Analyzing Passive RC Differentiator Circuit with Calculations
The passive RC differentiator is just a simple RC circuit where the resistor and capacitor are hooked up in series. What this does is give you an output signal that works like the mathematical process of differentiation. Basically, here the output shows how fast the input signal is changing at any given instant. In a […]
Analyzing Waveforms Generated by RC Circuits
RC circuits have the ability to create various output shapes or waveforms, depending on the type and frequency (or period) of the signal applied to the input terminals. It is similar to how the circuit “reacts” differently based on what is provided to it. In earlier lessons on RC Charging and Discharging we learned that […]