The main difference between PNP transistor and NPN transistor is that the conduction in NPN transistor is due to electron while conduction in PNP transistor is due to holes. Another crucial difference between NPN and PNP transistor is the direction of flow of current, the current in NPN transistor flows from collector to emitter, on the contrary, the current in PNP transistor flows from emitter to collector. The other differences between NPN and PNP transistor are biasing condition. The … [Read more...] about Difference between NPN and PNP Transistor
Difference Between Diode and Transistor
Diode and Transistor are considered as the backbone of electronic devices and Circuit. But the similarities between these crucial devices of electronics realm end here. The main difference between diode and transistor is that a diode is a two terminal device which allows current in one direction only from the anode to the cathode. On the contrary, a transistor is a three terminal device which passes current from high resistance region to low resistance region. The word transistor itself … [Read more...] about Difference Between Diode and Transistor
Difference Between Clipper and Clamper
The major difference between clipper and clamper is that clipper is a limiting circuit which limits the output voltage while clamper is a circuit which shifts the DC level of output voltage. The clipper and clamper circuits are exactly opposite to each other regarding their working principle. Another significant difference between clipper and clamper is the shape of the output waveform. The voltage which is clipped by clipper can assume various shapes, but the voltage obtained by clamper … [Read more...] about Difference Between Clipper and Clamper
NPN Transistor
Definition: NPN transistor is a current controlled circuit which comprises of three terminal that are emitter, base and collector. It is formed by sandwiching the layer of N-type material between two layers of P-type material. It acts as the current source because it provides current through the base terminal. NPN transistor is exactly opposite of PNP transistor. NPN transistor can be understood as a Negative-Positive-Negative transistor. This is because the N-type layer of semiconductor … [Read more...] about NPN Transistor
PNP Transistor
Definition: PNP transistor is three terminal current controlled device which consists of three terminals formed by sandwiching a layer of N-type material between the two P-type semiconductors. It acts as a current sink because all the emitter current sinks into the base terminal. PNP transistor can also be understood as positive – negative – positive transistor. The majority charge carriers involved in the conduction process of PNP transistor are holes. Thus, the current which generates at … [Read more...] about PNP Transistor
Transistor
Definition: The word Transistor is formed from two words, one is “Transfer” and other is “Varistor”. This implies a device which transfers resistance from one channel of the circuit to other is called transistor. It is a three terminal current controlled device which can either be operated as switch or amplifier by providing small signal voltage. It is one of the significant types of active devices. Significance and History of Transistor You must be thinking what is the need of … [Read more...] about Transistor
Difference between Voltmeter and Ammeter
A voltmeter is an instrument which measures the voltage between two points of a circuit while Ammeter measures the current flowing in the circuit. Voltage is measured in Volts while Current is measured in Amperes. Thus, the unit in which voltmeter measures the voltage is volt while the unit in which ammeter measures the instrument is Ampere. The other significant difference between Voltmeter and Ammeter is connection architecture. The voltmeter is connected parallel across the load when we … [Read more...] about Difference between Voltmeter and Ammeter
Difference between AC and DC
AC is an acronym of Alternating Current while DC is an acronym of Direct Current. The major difference between AC and DC is that DC is unidirectional current while AC is bidirectional Current. DC is constant with time while AC changes at every instant of time. The major drawback of using DC is, it starts deteriorating with distance. The power supplied by DC source is not convenient for long distance as it will diminish with the increment in the distance. This is not the case with AC. Thus it … [Read more...] about Difference between AC and DC
Difference between LED and Photodiode
The LED operates on the principle of electro-luminance while photodiode works on the principle of the photoconduction. In a Light emitting diode, when electrons and holes recombine, the energy is released in the form of light. Thus, it is termed as Light-emitting diode. On the contrary, photodiode generates current when it is exposed to the source of light. LED and Photodiode are reverse of each other. LED generates light with the help of charge carriers while photodiode generates current due … [Read more...] about Difference between LED and Photodiode
Difference between Centre Tapped and Bridge Rectifier
The crucial thing which differentiates Centre Tapped and Bridge Rectifier is the design architecture. Centre tapped Rectifier consists of two diodes which are connected to the centre tapped secondary winding of the transformer as well as with the load resistor. Bridge rectifier comprises of 4 diodes which are connected in the form of Wheat stone bridge and thus provide full wave rectification. The advantage of using Bridge rectifier is that no centre tapping is required. Thus, we can … [Read more...] about Difference between Centre Tapped and Bridge Rectifier