Electron tips

Why are High Voltage Power Lines not Insulated   Why are High Voltage Power Lines not Insulated You may notice when you pass by one of the high-voltage electrical wire poles that it is not insulated, that is, So why is it not covered with insulating material? The reason is due to two basic things:   The first reason:  As we all know, high-voltage electrical energy transmission wires reach the amount of energy that they transmit between 12 thousand volts and 765 kilovolts, which is essentially huge electrical energy. In order to be insulated with insulating material, it will need up to 17 centimeters, and if we wrap all of this  Electrical lines The total cost will be very expensive.   The second reason :  Insulating the electrical lines with insulating material will increase the weight of the electrical lines in addition to the weight of their length, which reaches thousands of kilometers, in addition to the possibility of a fire due to the large electrical...

Can a Capacitor Charge Electric Batteries   Can a Capacitor Charge Electric Batteries As we mentioned in a previous topic, a capacitor is an electronic component capable of storing electrical charges or more precisely, electrical energy for a certain period before discharging it when connected to a load. But the question remains: can a capacitor charge an electric battery? The Answer: Yes, a capacitor can charge electric batteries. All you need to do is charge the capacitor to its maximum voltage so that it can transfer energy to the battery. However, it is important to note that the amount of energy stored in a capacitor is always relatively small (depending on its capacitance) compared to the energy available in a battery. Therefore, do not expect the capacitor to fully charge the battery. If you have any other questions, feel free to ask in the comments section. 

Integrated circuit 555 timer    IC 555 timer tutorial , Pin diagram, Circuit, working principle : In today’s topic, we will present to you an educational article about the so-called integrated circuits (ICs), especially the 555 circuit or timer, which is considered the most famous integrated circuit in the field of electronics. So how does the 555 timer work?  And an explanation of the various terminals ( pins) and components of the timer 555?  The most important uses of timer 555? Block diagram? Definition of integrated circuit timer 555 :  The timer 555 or timer 555 is a small chip that contains eight terminals and is often made of silicon.  It contains inside it many electronic components such as transistors, resistors, and capacitors that are very precise and connected to each other, forming a loop that does not have a beginning or end,  That's why it's called an integrated circuit, and the 555 timer is very similar to the Optocoupler in terms of s...

Why Always Thermal power plants near water sources    Why do we build thermal power plants near water sources ( rivers, lakes) Nuclear power plants are among the most commonly used methods for generating electricity, providing approximately 13% of the world's electricity needs. However, a controversial aspect is that these plants are often located near valleys and rivers. So, what is the reason behind constructing nuclear power plants close to water sources? Reasons for Building Nuclear Power Plants Near Rivers : One of the primary reasons for placing nuclear power plants near rivers is their massive water requirement. Water is essential for generating steam, which drives steam turbines to produce electricity. Additionally, it plays a crucial role in cooling nuclear reactors. The presence of a stable water supply ensures an efficient cooling process for various reactor and plant components. This helps prevent overheating risks, enhances operational safety, and ensures the reli...

How Transistor works, symbol, types , structure   How Transistor works, symbol, types , structure, Applications  The invention of the transistor in the last century was a great revolution in the field of electronics and it is considered one of the most important inventions that contributed greatly to the development of electronics and technical devices in general.  Without the presence of a transistor it would not enable humans to manufacture computers and mobile devices and specifically processors because the processors consist mainly of a huge number of very accurate transistors, as hardly any device is currently devoid of the transistor either in one way or another, so What are the basic components of the transistor ? Transistor symbol ? Transistor terminals? and the transistor types ? Transistor definition: Transistor is an electronic element that belongs to the semiconductors and allows us to control the other electronic components through the so-called base, as it c...

If current kills, not voltage, then why do scary "high voltage" signs exist  If current kills, not voltage, then why do scary "high voltage" signs exist Scary high voltage signs are placed in areas where there is an extremely high electrical voltage, such as in switching stations, power conversion stations, or even in factories and industrial companies. In this article, we will clarify an important point: if electric current is what kills, then why do these high voltage warning signs exist? When these signs are present, they indicate a risk of electric shock, whether through direct contact or even just by being near the source. This is because electricity can leak through the air in the form of a spark, as seen in high-voltage transformers during switching operations, which generate what is known as an electric arc. As we all know, high voltage refers to a significant potential difference between two points. Even touching just one point can expose you to a dangerous...

Why we use AC instead of DC in transmission  Why Is Alternating Current (AC) Used for Power Transmission Instead of Direct Current (DC)  Many people wonder why alternating current (AC) is used for transmitting electricity over long distances instead of direct current (DC), even though both types of current can carry electrical energy. In this article, we will explore the key reasons why AC is preferred for power transmission. Alternating current (AC):  AC is a type of electrical current that periodically changes direction (switching between positive and negative). Its frequency is measured in hertz (Hz), with most countries using either 50 Hz or 60 Hz, meaning the current changes direction 50 or 60 times per second. AC current diagram  AC is considered the backbone of electrical power in our daily lives. It is used in various applications, including homes for operating appliances such as washing machines, refrigerators, and air conditioners, as well as in residential...

What is a Multimeter | How to use Multimeter device   What is a Multimeter | How to use Multimeter device  The multimeter has a very important role in the field of electronics and electricity, as it is considered the basic tool for measuring and testing all electronic components and elements. In this educational article, we will explain to you how to use the multimeter, so if you are a beginner in the field of electronics, this article is suitable for you to learn the basics of Multimeter in measure electronics components. Definition of a Multimeter : Multimeter is generally a tool that is more used to measure electrical and electronic systems, as it can measure electrical resistors, diode, voltage, electric current, and all electrical components depending on the type of device used because there are measuring devices sophisticated and with many advantages. Explanation of the digital multimeter:  The digital multimeter has several features, This is an explanation of the m...

Why are stones laid in a Substation   Why are stones laid in a Substatio n Transformer stations operate under high-voltage conditions, posing safety risks to both equipment and personnel.  Stones or gravel are used to enhance safety, reduce electrical hazards, and maintain cleanliness. In this article, we will explore the key reasons for placing stones in transformer stations in detail. Reason 1: Reducing Ground Potential Rise (GPR) Ground potential rise or Touch Voltage is the voltage that a person may experience when touching a conductive metal surface while standing on the ground or when handling an electrical device during a fault or grounding issue. This is a major concern in the design and construction of transformer substations, as high voltage can pose serious risks to both people and equipment. Reason 2: Reducing Step Voltage Step Voltage is the difference in electrical potential between two points on the ground separated by a single step (approximately one meter) whi...

Why Are Tractor Rear Tires Filled with Water   Why Are Tractor Rear Tires Filled with Water The tractor is one of the most important agricultural and farming machines, featuring a unique and unusual design. But why is the tractor designed this way, with the front wheels being much smaller than the rear wheels? And why is water added to the rear wheels? What role does water play in the tires? Why Are the Front Wheels of a Tractor Smaller Than the Rear Wheels: As a general rule, the front wheels of a tractor act as a base and do not carry significant weight or pressure. They are primarily responsible for steering and changing the tractor’s direction. In contrast, the rear wheels are designed to penetrate muddy terrain and rough landscapes, providing greater contact with the ground, which ensures better stability and control. Why Are the Front Wheels of a Tractor Small Why Is Water Added to the Rear Wheels of a Tractor: As mentioned earlier, the rear wheels are responsible for control...

What is the thin element that glows inside light bulbs   What is the thin element that glows inside light bulbs There is no doubt that you have seen a thin wire glowing inside old electric bulbs, which are known for consuming more electrical energy—around 100 watts—compared to modern energy-saving LED bulbs. But what is the name of the thin electrical wire found in old incandescent light bulbs? What is the name of the thin wire inside the bulb: This wire is called the tungsten filament. It is a thin wire known for its ability to withstand extremely high temperatures, reaching up to 3,422°C. Its chemical symbol is W, and its atomic number is 74. Originally, tungsten is a heavy mineral that was discovered by the chemist Carl Wilhelm Scheele. The tungsten filament is placed inside the traditional glass bulb along with noble gases, primarily argon gas. When an electric current passes through the filament, it glows, producing light due to the movement of particles within this electrical...

Why Are Aluminum Wires Used in Power Transmission Towers Instead of Copper Wires   Why Are Aluminum Wires Used in Power Transmission Towers Instead of Copper Wires Many people wonder why aluminum wires are used in power transmission towers instead of copper wires, even though copper is more efficient in conducting electricity. In this article, we will explain the reasons behind using aluminum wires instead of copper wires. The main reasons are as follows: 1. Aluminum is Lighter than Copper: Aluminum wires are much lighter than copper wires, which reduces the overall weight of the cables and minimizes wire sag over medium and long distances. 2. High Cost of Copper: Aluminum wires are cheaper and more readily available compared to copper wires. Since electrical power is transmitted over extremely long distances—from power plants to cities and factories—the cost of using copper cables would be significantly higher. 3. Aluminum is More Flexible: Aluminum wires are more flexible than co...

Voltage electric, explain, symbol, unit   Voltage electric, explain, symbol, unit  Electric voltage or electric tension is the difference between two certain points, and this difference is what allows the flow of electric current from one point to another, and the voltage difference is what generates a driving force that pushes the current in the direction of the low voltage. The unit of measured voltage :  the unit of measurement of electrical tension in the global system is Volt, which is denoted by the letter V, to measure electrical tension we use a device that called avometer or Multimeter and it is placed in parallel with the load that we want to measure its electric voltage .  Ohm's law : Equation voltage with electric current is a compelling relationship, as the higher the voltage, the greater the intensity of the electric current or the number of electrons passing through the electrical conductor, and there is a famous and simple equation that combines the v...

What is a Megger Device and how it works   What is a Megger Device and how it works The Megger is an instrument used to measure insulation resistance between electrical wires, earth resistance, and electrical cables, as well as to test the quality of insulation in electrical equipment. It is commonly used in industrial and commercial applications to ensure the safety and efficiency of electrical systems. Functions of the Megger: Measuring earth resistance. Measuring insulation resistance in cables, wires, and electrical equipment. Detecting any electrical leakage or insulation faults. Ensuring the safe operation of electrical devices and protecting them from faults. Key Components of the Megger: Voltage Generator: Generates the necessary voltage for measurements, typically high voltage (up to 5,000 volts or more in some devices) for insulation resistance testing. Display: A digital or analog screen that shows measurement results, such as resistance values in ohms. Probes: Used t...