Category archives for: TECHNOLOGY

Wi Fi Dangerous to Our Health

Wi Fi Dangerous to Our Health: Life in the 21st century, we can hardly prevent that wi-fi radiation. In fact, we are surrounded by a wi-fi signal everywhere we go – at work, in restaurants, even in our own home. Although wireless technology makes our lives easier, it is still not completely safe for our […]

How to Read the Capacitor Value

How to Read the Capacitor Value? Determine Unit of Measurement: The basic unit of capacitance is the farad (F). The amount is much too big for normal circuits, capacitors so the house is equipped with one of the following units: 1 uF, 1 mF = 1 microfarad = 10-6 farad mF is the official abbreviation for millifarads […]

Inverter AC Reduces up to 64 % Electricity Bill

Inverter AC Reduces up to 64 % Electricity Bill: Inverter AC are more powerful. They provide big savings (up to 64 %) and is better at maintaining the temperature in comparison with conventional ACs. Let’s look at an example of the 2 ton Inverter AC vs. conventional AC. Power consumption of a 2 ton inverter AC is 1.4 kwh. Conventional AC takes 2.50 kwh. For explanation purposes, it […]

SDMA

SDMA: SDMA by means of physical separation methods which allow the sharing of wireless channels. For example, a single channel can be used simultaneously as users far enough apart from each other to avoid interference. Known as frequency re-use, the method is widely used in cellular radio systems. Cell-sites at a distance from each other […]

OFDMA

OFDMA: OFDMA is the access method that is used in the Long-Term Evolution (LTE) cellular system in order to accommodate multiple users in a given bandwidth. Orthogonal Frequency Division Multiplexing (OFDM) is a modulation method that divides a channel into multiple orthogonal narrow bands so that they do not interfere with each other differs. Each […]

CDMA

 CDMA: CDMA is a purely digital techniques. It is also known as spread spectrum because it is a digitized version of the analog signal and is distributed over a wider bandwidth on a lower power level. This method is called Direct Sequence Spread Spectrum (DSSS) and (fig. 4). The digitized and compressed voice signals in […]

TDMA

TDMA: TDMA is a digital technique that divides a channel or a band in the time slots . Each time slot is used to send a byte or other portion of the digital signal for each successive serial data format . This technique works well with slow speech data signal , but it is useful […]

FDMA

FDMA: FDMA is the process of dividing a channel bandwidth or more separate bands , each for use by a single user (Fig. 1). Each individual band or channel is wide enough to accommodate the spread spectra transmissions. The transmitted data is modulated on each sub- carrier, and all of them.   FDMA divides the […]

Nuclear Power

Function of Reactor in Nuclear Power Generation: A nuclear reactor produces and regulates the release of energy from the splitting of atoms of uranium. Uranium Fuel nuclear power is a clean and efficient way of boiling water into steam. With the exception of the reactor itself, a nuclear power plant works like most coal or gas […]

Sources of Electricity Generation

Sources of Electricity Generation: Electricity is essential to modern life. It powers our lights, appliances, industrial processes. Globally, the use of electricity is increasing rapidly as new major economic development in countries like China and India. The demand for electricity is driving a growing demand for electricity generation, with thousands of new plants need around the world […]

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