Definition: Thyristor (SCR) is a semiconductor device that performs the action of switching as well as rectification. It is a 4 layer and 3 junction device formed by the combination of alternating p and n-type semiconductor material. Thyristor is a word formed by the merger of thyratron and transistor. As it exhibits the rectification action of …
Definition: A Phototransistor is a device that has the ability to detect the level of the incident radiation and accordingly change the flow of electric current between emitter and collector terminal. It is a 3-layer semiconductor device that consists of a light sensitive base region. It is basically a transistor whose action depends on the application …
Amplitude and frequency modulation are the two techniques used to modulate a signal in order to have long-distance as well as proper transmission. The major difference between amplitude modulation and frequency modulation lies in the method of modulating the signal. In amplitude modulation, variation in amplitude of carrier signal according to the message signal is …
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Both RTD and Thermistor are used to detect the change in temperature. However, the crucial difference between RTD and Thermistor lies in the material of their construction. RTD is constructed with materials that are pure metals whereas thermistors are fabricated with semiconductor materials of ceramic or polymers. Also the two show variation according to the …
Both NPN and PNP transistors are the two major classifications of Bipolar Junction Transistor (BJT). However, there exist several differences between the two. One of the major differences between NPN and PNP transistor is that in NPN transistors, electrons are the majority carriers, hence electrons are responsible for current flow. While, in PNP transistors, holes …
Definition: Waveguides are a special category of transmission line that is used to guide (direct) the waves (radiation) along the length of the tube. These are typically a hollow metallic tube that acts as the medium to transfer or transmit power. Optical fibers are a type of waveguide more specifically we can say dielectric waveguide …
Definition: Transducers are the device that is used for the conversion of energy from one form to another different but equivalent form. In terms of instrumentation, more specifically we can say, transducers are the devices that change non-electrical quantity into its electrical equivalent form. The converted form of energy by any transducer can also be …
The crucial difference between conductor, semiconductor and insulator rely on their level of conductivity. Conductors are basically the materials that allow easy flow of electric current, hence exhibiting high conductivity, semiconductors are the materials that possess moderate conductivity. As against, insulators are the materials that prevent the flow of charge through them, thus exhibiting low …
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The polarity of the applied external potential (voltage) to any device is characterized as forward and reverse biasing. The crucial difference between forward and reverse biasing is that in forward biasing p region of the device forms a direct connection with the positive side of the battery and n region is connected to the negative …
Definition: Transmission lines are the conductors that serve as a path for transmitting (sending) electrical waves (energy) through them. These basically forms a connection between transmitter and receiver in order to permit signal transmission. Transmission lines in microwave engineering are known as distributed parameter networks. As their voltage and current shows variation over its entire …