Electronics Engineering

In DC power the voltage is constant, meaning that over time it is always the same number. In AC power, the voltage varies sinusoidally, meaning that over time the voltage travels smoothly from a positive "peak" to a exactly inverse negative "peak" and back again infinitely. AC power comes out of your wall sockets, but most things us DC power. Thus, many power cables have that big ugly box on them. That box converts the AC power from your wall socket in to DC power for your electronics.

i think.... and i only think this, it may not be correct, an antenna transmits as well as receives, an aerial only receives

there is no difference between antenna and aerial. According to British spelling it is called Aerial and according to American English antenna. So there is no difference just the English

In the U.S. sometimes antenna is used for rigid structures used to transmit or receive radio signals, while aerial is used for a simple wire hung between insulators used to transmit or receive radio signals.

The actinides (or actinoids) family contain the following elements: actinium, thorium, protactinium, uranium, neptunium, plutonium, americium, curium, berkelium, californium, einsteinium, fermium, mendelevium, nobelium, lawrentium; beginning with neptunium the elements are only artificially obtained.

Transistors have many characteristics and they most certainly require voltages to be a certain polarity if they are to work properly. There are two main types of transistor: PNP and NPN. They are identical except that all polarities are reversed on one compared to the other. There are many books and online resources that describe transistors but here is a very brief note about transistor operation. Each transistor has a base, a collector and an emitter. When a small current is passed from the base to the emitter, a larger current will pass from the collector the the emitter. With an NPN transistor, the base needs to be positive with respect to the emitter and the collector also has to be positive with respect to the emitter for the transistor to work. A PNP transistor is reversed, where both the base and the collector need to be negative with respect to the emitter to operate. Therefore, transistors do indeed have a polarity, even if it is more complex that some other devices. Disclaimer: The above description of transistor operation is greatly simplified and there are operational modes that are outside the conditions described. Please don't use the above description as a definitive guide to transistor behaviour.

A microwave communication link typically consists of a transmitter, a receiver, and an antenna at both ends. The transmitter converts the electrical signal into microwave signals, which are then transmitted through the antenna. The receiver at the other end captures these microwave signals through its antenna and converts them back into electrical signals for further processing. The link may also include devices such as amplifiers, filters, and antennas to enhance signal quality and transmission.

It can range very widely. They can go from 5 mega bits per second to 50 giga bits per second. (with different types of cabling.) In Sept 2009, in their lab, Alcatel-Lucent achieved a speed of 2 Peta bits per second over 7,000KM. That's over 100 million Giga bits per second.

When electricity flows through a wire, it turns the atoms into ions by moving the electrons inside those atoms.

Copper is one of the best 'conductors' of electricity because its electrons are very easily moved from atom to atom. When a wire is connected to electricity it takes on a 'positive' and 'negative' end. The electrons will always want to flow from the positive end to the negative end. This movement of electrons works the same way in most materials, but more or less amplified depending on the availability of 'free' - or easily moved - electrons. It is also the reason for the feeling we get across our bodies when we get an electric shock.

While materials that are good conductors have an availability of electrons to move, those that are good insulators are the opposite and instead have an excess of protons. Things like plastic, glass and paper are good insulators.

PWM stands for Pulse Width Modulation. It is a technique used to encode a message into a pulsing signal by varying the width of the pulse relative to a fixed time frame. PWM is commonly used in controlling the speed of motors, regulating power to LEDs, and generating analog voltage levels from digital signals.

Nanodevices are extremely small devices or systems, typically at the nanoscale level (1-100 nanometers in size), designed to perform specific functions. These devices can be used in various fields such as electronics, medicine, and materials science due to their unique properties at the nanoscale. Examples of nanodevices include nanosensors, nanorobots, and nanoelectronics.

I think you are referring to the 74xx series of TTL logic integrated circuits. There are many types of counters, gates and other logic functions available with type numbers beginning with 74, e.g. 7400, 7401 etc.

To transmit an 8 by 10 inch image over an ISDN B channel with 300 pixels per inch and 4 bits per pixel, calculate the total number of pixels in the image: 8 (inches) * 300 (pixels/inch) * 10 (inches) * 300 (pixels/inch) = 7,200,000 pixels. With 4 bits per pixel, the total number of bits required would be 7,200,000 * 4 = 28,800,000 bits. Convert this to bytes by dividing by 8, giving us 3,600,000 bytes or approximately 3.43 MB for transmission.

A clamp is a mechanical tool used to hold objects firmly together. It is typically used to secure materials while glue dries, during welding or woodworking, or to hold objects in place for cutting or drilling. Clamps come in a variety of types and sizes to suit different applications.

Both, in a way. Electronic components, including moth components inside the computer, need DC. However, since the power available in homes or offices is AC, a computer is designed to work with this. A computer has a power supply that internally converts AC to DC.

Yes, in synchronous motor theory, excitation current is the same as field current. This current is used to produce the magnetic field in the rotor that interacts with the stator current to generate torque and make the motor operate synchronously.

Yes, however there are strict limits on how high a wind the generator can withstand, and how much energy the generator can produce.

Wind generators are usually equipped with devices to prevent damage in high winds.

A2 On the sea, you mount them on a raft which could be floating, or supported on piles in shallow water. There then has to be a undersea power cable to a land switchyard

A3:

1) Select possible locations for your idea.

2) Survey the Wind one could expect to find at each location. (or have an Engineer do it.)

3) Investigate the regulations and ordinances one would have to comply with.

4) Work out who you will sell the power to and how you plan to get the power to their grid.

5) Work out how you plan to anchor the tower.

6) Work out a design for each site. Rated Capacity, expected output, drawings, plans, ordinances that need to be complied with.

7) Work out the business of your company, finances and who will need contracts to proceed.

8) Get approvals.

9) Let contracts and oversee work.

10) Manage contracts and maintain the wind turbines for their useful life.

11) Remove the turbines at the end of their useful lives and dispose of the material.

Voltage (volts) is the measure of electrical potential difference, while milliampere-hours (mAh) is the unit of measure for the capacity of a battery to store charge. Voltage determines the force at which electrical charges move through a circuit, while mAh indicates how long a battery can supply a certain amount of current before running out of charge. Both are important in understanding the performance and capacity of electrical components.

A tank circuit is used on a radio transmitter. It is an electronic circuit that is used to tune a specific frequency. The tank is made up of two components, an inductor and a capacitor. The two components are connected in a parallel with each other. This is where the term "tank" comes from. Used in a radio transmitter, it is tuned for maximum RF (radio frequency) output on the frequency the transmitter is tuned to.

A magnetic field.

The output voltage can be calculated using Ohm's Law, which states that V (voltage) = I (current) * R (resistance), where I is the current flowing through the circuit and R is the resistance of the circuit. Alternatively, you can use the voltage divider formula Vout = Vin * (R2 / (R1 + R2)), where Vin is the input voltage and R2 / (R1 + R2) is the voltage divider ratio of resistors R1 and R2.

In 2008, the President of the United States was George W. Bush. He served as the 43rd President from 2001 to 2009.

The primary purpose of an electrical service drip loop is to prevent water from traveling along the service drop cables and entering the service entrance of a building. This helps to protect the electrical wiring and components from water damage, reducing the risk of electrical hazards and disruptions.

-Cooking utensils, kettles, saucepans and boilers are usually made of aluminum or stainless steel where direct heating is involved.

-Soldering iron rods are made of iron with the tip made of copper because copper is a much better conductor of heat than iron.

-Heat exchangers such as those used in a laundry enable precious fuel to be saved

In order to function, each electrical loop requires a closed path for the current to flow, a power source to provide the energy, and a load to consume the electrical energy.

It depends in which country you are located. Through out the world that are different electrical voltages. The electrical manufactures knowing this and wanting to sell world wide make bulb to run on that countries electrical system. The two main voltages that bulbs operate on are; in 60 Hertz countries 120 volts and 50 Hertz countries 230 volts.

Graphite, which is a form of carbon, is a non-metal that can conduct electricity due to its unique structure that allows electrons to move freely through its layers.