Analog versus Digital Signal Processing

Though our world is mainly composed of analog signals such as the music from your speakers or the current through the mains supply of your house, most of the signal processing today are done in digital form. In this EEFAQ, we will discuss why digital signal processing is preferred than analog signal processing.

What is Induction Heating?

Induction heating is heating of an electrically conducting material by inducing eddy currents in it. In this EEFAQ, we will try to see how this induction heating works by studying eddy currents and how they can be induced. We will also discuss some of the induction heating application.

What is Common-Mode Rejection Ratio in Op-amps?

The Common-Mode Rejection Ratio (CMRR) of an opamp indicates its ability as a differential amplifier to suppress signals common (noise or unwanted signals) to its two inputs. In this EEFAQ, we will discuss this very important specification of an opamp and see what are the benefits of having a high value of CMRR.

Why’s an LCR meter better than a multimeter for measuring inductance and capacitance?

Digital multimeters, when measuring inductance or capacitance, completely ignore the series and parallel resistance of the components which is one of the reasons why LCR meters are better in measuring inductance and capacitance. In this EEFAQ, we will discuss about LCR meters and their operation.

What is Piezoelectricity?

Piezoelectricity is the phenomenon where a potential difference is generated across a piece of piezoelectric material when a mechanical stress is applied to it. In this EEFAQ, we will try to understand better how piezoelectricity works and discuss some of its applications.

What is the difference between Coupling, Decoupling, and Bypass Capacitors?

When we design or evaluate electronic circuits involving capacitors, we often encounter terms such as coupling, decoupling, and bypass. In this EEFAQ, we will discuss these terms, their differences, and how each of them functions in a circuit.

What is CMOS Technology?

CMOS (Complementary Metal Oxide Semiconductor) Technology is a predominant technology for manufacturing integrated circuits. In this EEFAQ, we will discuss about CMOS technology and how it uses both NMOS and PMOS to realize various logic functions.

How to use Thyristors as a Static Circuit Breaker?

The most important role of a circuit breaker in a circuit is to protect the circuit components from overcurrent in case of a fault or overload. In this EEFAQ, we will discuss about how we can use power semiconductor devices such as thyristors to act as a static circuit breaker.

What is a Buck Converter?

The Buck Converter is a form of a DC-DC converter which steps down the level of supply voltage and provides it at the output. In this EE FAQ, we will discuss about buck converters and their operation.

What is Energy Harvesting?

Energy harvesting is the collection and harnessing of different forms of green energy then convert it into electrical energy to power electronic devices or circuits. In this EEFAQ, we'll discuss energy harvesting and its different energy sources such as motion, light, temperature gradients, and chemical energy.

What is the difference between a normal semiconductor device and a power semiconductor device?

When it comes to switching high power loads, you need to use a power semiconductor device instead of a normal or low power semiconductor device. In this EEFAQ, we will discuss the difference between a normal and a power semiconductor device, and the techniques used in fabricating power semiconductor devices.

What are the Golden Rules of Op-Amps?

Designing operational amplifier (or op-amp) circuits and selecting the right external components will be much easier if we know the characteristics of an op-amp. So in this EE FAQ, we will discuss the golden rules of op-amps which are based on their characteristics.

When should you choose LDO or Buck Converter?

In order to decide if an LDO or a buck converter is the right regulator for a specific application, there are lots of parameters that we need to consider. In this EE FAQ, we will discuss when should we choose LDO or buck converter.

How does a Servo Motor work?

Servo motors are extremely important in application such as industrial process automation, robotics, etc. It is important for us to understand how they work in order to use them properly. In this EE FAQ, we will look at the electromechanical aspects and then dive into the control aspects of servo motors.

What are Harmonics and how does it affect an Electrical System?

Harmonics are that part of a signal whose frequencies are integral multiples of the system’s fundamental frequency. In this EE FAQ, we will discuss what causes harmonics and how does it affect an electrical system negatively.

How is the electronic fan regulator different from the conventional fan regulator?

Fans are probably one of the most used household electrical appliances in the world and they are also used extensively for thermal management. In this EE FAQ, we will learn two ways to control the speed of a fan and see which of them is more efficient.

What is a Battery Management System and why is it needed?

In large energy storage systems, the safety and life of the battery are important parameters to consider. So in this EE FAQ, we are going to learn how to use a Battery Management System (BMS) in order to fully utilize batteries and prolong their lives.

How do we read the ratings given on a battery?

In order to select the right battery for your project, you need to know how to read the ratings specified on the battery. In this EE FAQ, we're going to discuss three common terms that are used to specify the battery rating such as nominal voltage, nominal capacity, and energy capacity.

How is UV light used in disinfection and when is it suitable to use?

Disinfecting your skin with just any kind of UV will lead to damage and increase risk of skin cancer. In this EE FAQ, we will discuss how to carefully use UV light for disinfection and when is it suitable to use.