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In this Article we will look at how to control a light fitting with two switches. This is very important, for example, while setting a light switch at the top and lower part of a lot of steps, or at different doorways in a room. We will look at two typical methods of doing this, similarly as some different minor takeoff from the ensuing transformation. As of now, the shade of the connections moves all around the planet, as demonstrated by different rules. I will use the European concealing code for this video, but you ought to definitely check out your close by rules.  I essentially need to prompt you that working with power is hazardous. We're covering essentially the theory in this video, so benevolently don't endeavor any electrical work aside from assuming you are qualified and capable. Along these lines, to control a light with two switches, we clearly need two switches, which have three terminals on the back. I'll leave a couple of associations in the video portrayal ...

In many situations, we need to use MOSFETs configured as high-side switches. Many a times we need to use MOSFETs configured as high-side and low-side switches. Such as in bridge circuits. In half-bridge circuits, we have 1 high-side MOSFET and 1 low-side MOSFET. In full-bridge circuits we have 2 high-side MOSFETs and 2 low-side MOSFETs. In such situations, there is a need to use high-side drive circuitry alongside low-side drive circuitry. The most common way of driving MOSFETs in such cases is to use high-low side MOSFET drivers. Undoubtedly, the most popular such driver chip is the IR2110. And in this article/tutorial, I will talk about the IR2110. Notice that the IR2110 comes in two packages – 14 pin through-hole PDIP package and the 16-pin surface mount SOIC package. Now let's talk about the different pins. VCC is the low-side supply and should be between 10V and 20V. VDD is the logic supply to the IR2110. It can be between +3V to +20V (with reference to VSS). The actual voltag...

  Review a list of frequently asked Electrical interview questions for electrical graduates. Frequently asked interview questions with answers under the subjects like electrical machines, Transmission and distribution, Power electronics and some general basic questions. 1. What is a System? When a number of elements or components are connected in a sequence to perform a specific function, the group of elements that all constitute a System 2. What is Control System? In a System the output and inputs are interrelated in such a manner that the output quantity or variable is controlled by input quantity, then such a system is called Control System. The output quantity is called a controlled variable or response and the input quantity is called a command signal or excitation. 3. What are different types of Control Systems? Two major types of Control Systems are  1) Open loop Control System  2) Closed Loop Control Systems Open loop Control Systems : The Open-loop Control System...

A joule thief is a compact, low-cost, and easy-to-build self-oscillating voltage booster that is often used to drive small loads(3.3v 5mm LED). Other names for this circuit include blocking oscillator , joule ringer , and vampire torch . The circuit is a blocking oscillator variation that functions as an unregulated voltage boost converter. The output voltage is increased at the price of a larger input current draw, but the output integrated (average) current is reduced and the luminescence brightness is reduced. This joule thief Circuit uses a 1.2 V or 1.5 V single-cell electric battery to power LEDs. However, as the supply voltage reaches 3V, the LED begins to light. The theory of operation of a Joule thief circuit Joule Thief Circuit The joule thief circuit operates on a fairly basic basis. It operates by quickly switching the transistor. When the transistor is first switched off, a tiny amount of current flows via the resistor, primary winding, and base-emitter junction, assistin...

Circuit Design for LEDs. Discover how to create LED circuits. How to determine resistor size, how to protect LEDs, how long a battery will power a circuit, how to calculate resistor power rating, how to connect LEDs, and more. These are light-emitting diodes or LEDs. When a current is sent through one, light is produced. However, if we surpass its voltage and current limits, it will be destroyed immediately. The interior of the LED contains a small wire that can only withstand a particular amount of current. Assume you have a 3 volt supply and wish to attach a single red LED to it. What kind of resistor do we require? We know that this wire is 3 volts and that this wire is 0 volts. Because the led has a voltage loss of about 2 volts, our resistor must eliminate the remaining 3 volts.  To get 1 volt, subtract 2 volts. Because the led requires around 20 milliamps of current, 1 volt divided by 0.02 amps equals 50 ohms of resistance. For this computation, make sure you convert your m...

 Previously, the Ujala Scheme was referred to as the Domestic Efficient Lighting Programme (DELP). The program has now been relaunched under a new name. It has also been resurrected by offering many more incentives to customers than it did previously. Yojana's major goal is to replace over 200 million incandescent light bulbs with LED light bulbs. This will result in a total savings of 10.5 billion kWh. Key Features of the Ujala Yojana It provides everyone with free and inexpensive LED light bulbs. It is one of the federal government's earliest and most powerful initiatives to promote the adoption of energy-efficient light bulbs. The scheme's goal is to protect the environment. The applicant will receive LED light bulbs at a reduced price through this program. The prices will be reduced by 60 percent. As a result, the discounted price will be 40% cheaper than the market price. The Ujala Yojana has brought the state and federal governments closer together. A similar plan was...

What Is a Multimeter Multimeters are electrical or electronics test instruments that are used to determine multiple values such as voltage, current, resistance, diode test, continuity test, and many more. Every repairman should be familiar with a multimeter, which has multiple applications for checking electronic components and circuits. Today, we'll go over three of the most fundamental multimeter features for evaluating continuity. Resistance and voltage Let's begin with a continuity test .  Continuity Test A continuity test determines whether or not two objects are electrically linked. An electrical current can flow freely from one end to the other if something is continuous. If there is no continuity, this indicates that there is a break somewhere in the circuit. This might suggest anything from a blown fuse or a poor solder joint to a broken cable that prevents a continuity test from being performed. Begin by connecting your probes. The black probe is inserted into the n...

Have you ever wondered why some of your appliances' switches are different from others, or why we have this box with cables running in and out? So, in this episode, we're going to address these concerns. Miniature circuit breakers, or MCBs, are the name given to these devices. They're used to guard against overload and short circuits, and they have separate mechanisms for each of the actions we'll look at. C 16 is printed on this MCB. As a result, this is a class C device with a 16-amp overload current. Let's open it up by removing the rivets. This is the input side of the equation. This is where the phase wire is linked. After that, there's a bimetallic strip. This strip is composed of two metals. When metals are heated, they expand, and the rate of expansion varies depending on the metal. When two different metals are heated together, one metal expands more than the other, causing them to bend. Passing a current through a conductor, as in an MCB, may create he...

To avoid a short circuit or device failure, an electrical fuse is a low melting point copper or other metal wire that breaks due to heat-induced by Overcurrent or excessive load. The flow of electric current warms up the items through which it passes. Electric water heaters, light bulbs, and irons are just a few examples of electric gadgets that make use of this phenomenon. It does, however, have certain downsides. For example, if this equipment becomes overheated, it may become damaged or even catch fire! In reality, the undesirable high electric currents harm not only these gadgets, but all of the appliances in our home. Any gadget can only withstand a certain quantity of electric current. If the current surpasses that limit, the device's components heat up, perhaps resulting in a fire! Is there a way to prevent this from happening? An "electric fuse" is a device that is used to prevent this from happening. It comes in a variety of forms and sizes. This is how it usuall...