In order for a signal amplifier to do its job properly and make sure that the output signal does not get distorted in any way it is really important to have some kind of DC Bias applied to its Base or Gate terminal. You see, a DC bias is necessary because it allows the amplifier […]
Understanding Common Source JFET Amplifier Circuit
When we talk about the common source JFET amplifier, there is this really cool advantage that it has over the common-emitter BJT amplifier. The big deal here is that the Field Effect Transistor or FET for short, boasts an incredibly high input impedance. This means it can handle very tiny input voltage signals without breaking […]
Common Emitter Amplifier Circuit: Explained with Formulas
Basically when we talk about transistor amplifiers, they are designed to work with AC input signals that goes up and down between a positive value and a negative values. Now to make sure that the transistor can work properly between these two extreme points, we need to set things up in a specific way. This […]
Audio Amplifier Basics Explained
We often use term “amplifier” to refer to a circuit that takes input signal and produces an amplified version of it. But as we go deeper into amplifier tutorial, we will discover that not all amplifier circuits are created equal, they are categorized based on their circuit configurations and modes of operation. In electronics we […]
Explained: 7-Segment Display Counter Circuits
In today’s world showing numbers and letters on multiple LED displays is pretty simple, thanks to microcontrollers like Arduino or Raspberry Pi. With just a small piece of code we can easily display the digits we need. But as electronics students or hobbyists there are times when we need to show multiple numbers or digits […]
Understanding MOD Counters or Cascaded Counter Circuits
A counter mainly works by adding one to its value every time it gets a pulse from the clock signal. When a counter counts up in response to the clock, we say it is in “count-up” mode. If it counts down instead, we call that “count-down” mode. There are also special counters that can do […]