A diode is a two-terminal electronic component that mainly conducts electricity in one direction. As we know, an ideal diode will have zero resistance in one direction, and infinite resistance in the reverse direction. There are many types of diodes,…
What is PIN Diode? A PIN diode can be defined as: A diode with a wide and undoped intrinsic semiconductor region between a p-type and an n-type semiconductor region. It has an undoped intrinsic semiconductor region between a p-type and an n-type…
Photodiodes are a class of diodes that converts light energy to electricity. Their working is exactly the opposite of LEDs which are also diodes but they convert electricity to light energy. Photodiodes can also be used in detecting the brightness…
What is LED? A light-emitting diode (LED) is a semiconductor device that emits light when an electric current flows through it. When current passes through an LED, the electrons recombine with holes emitting light in the process. LEDs allow the…
Laser diodes can produce a narrow beam of laser light in which all the light waves have similar wavelengths. Because of this property, laser beams are very bright and can be focused over a very tiny spot.Laser diodes are widely…
What is Remote Sensing? Remote Sensing is a technology to gather information and analyzing an object or phenomenon without making any physical contact. This technology is used in numerous fields like geography, hydrology, ecology, oceanography, glaciology, geology. A geographic information…
Pulse amplitude modulation is defined as the data transmission by altering the amplitudes (power levels or voltage) of every pulse in a regular time sequence of electromagnetic pulses. The possible number of amplitudes can be infinite, but mostly it is…
According to the Atomic hypothesis, all things are made up of small fundamental units termed as atoms, which can be defined as tiny particles that move in perpetual motion, which attract or repel each other depending on their inter-particle distance.…
The transmission of information by communication systems over large distances is quite a feat of human ingenuity. We can talk, video chat, and text anyone on this planet! Communication systems have used a very clever technique called modulation to increase…
The frequency of a radio frequency channel can be explained best as the frequency of a carrier wave. A carrier wave is purely made up of a constant frequency, slightly similar to a sine wave. It does not carry much information that…