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Understanding the mechanisms involved in a voltage amplifier

Understanding the mechanisms involved in a voltage amplifier In our previous articles, we discussed analogue signals and their characteristics.  We’re going to dive a little deeper into analogue signals and see how a voltage amplifier works. What is an operational amplifier? Operational amplifiers, or op-amps, are one of the basic building blocks of analogue electrical […]

Characteristics of analogue electronics

Characteristics of analogue electronics In our previous articles, we’ve discussed subjects such as the different types of semiconductors and how they work.  We’re now going to focus on analogue electronics—what it is and its characteristics. What is an analogue signal? An analogue signal is continuous; in other words, it can have an infinite number of […]

The structure and mechanism of a Bipolar transistor

The structure and mechanism of a Bipolar transistor In our previous article, we discussed the operation of metal oxide transistors, and now we’re going to have a look at bipolar transistors.  We’ll look at their mechanism and how they work. What is a bipolar transistor? A bipolar junction transistor is a semiconductor device which can […]

The operation of metal oxide semiconductors

The operation of metal oxide semiconductors In our previous article, we discussed how semiconductors operate.  We’re now going to get a bit more specific and look in detail at metal oxide semiconductors. Junction Field-effect Transistors (JFET) We first need to understand Junction Field-effect Transistors before focusing on a metal oxide semiconductor. A transistor is a […]

How do common semiconductors operate?

How do common semiconductors operate? In our last article, we checked out some of the different types of semiconductors.  Now we’re going to have a look at how the common types of semiconductors operate. Zener Diode A normal p-n junction diode allows electric current in forward-biased condition.  When forward-biased voltage is applied to the p-n […]

Different types of semiconductors

Different types of semiconductors In our previous article, we looked at the characteristics of a semiconductor.  We’re now going to move on to looking at different types of semiconductors and how they work. N-type and P-type semiconductors The image below shows an n-type conductor: Phosphorus has one more electron than silicon does, so when it […]

The characteristics of basic semiconductors

The characteristics of basic semiconductors In some of our previous articles on Electrical and Electronic Engineering we’ve looked at induction, waveforms and capacitance.  We’re now going to move on to looking at semiconductors and how they fit in to these principles. What is a semiconductor? Semiconductors form the basis of all microprocessors and integrated circuits.  […]

Trigonometric representation of periodic waveforms.

Trigonometric representation of periodic wave forms While we’ve already looked at periodic wave forms in a previous article, we’re going to jump into the trigonometric representations and see some of the essential calculations we need. Before we jump in, just to refresh our memory, let’s look at an image of two sinusoidal waveforms ‘in phase’:  […]

What are the principles of inductance and capacitance?

What are the principles of inductance and capacitance? In our previous article on inductance, we jumped into the behaviour of inductance and what it is.  Now we’re going to look at the principles of inductance, as well as the principles of capacitance. Inductance and Capacitance. We’ve already touched on the surface of inductance in our […]

What is the Difference between Transformers and Rectifiers in Power Supplies?

What is the Difference between Transformers and Rectifiers? We shall first need to recap on some background knowledge relating to induction