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Colour band table of resistor
Following table is commonly used for all colour band of resistor Sr. No Colour 1st Band 2nd Band 3rd Band Tolerance 1 Black 0 0 100 - 2 Brown 1…
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Colour code table of capacitor
Following are the colour code table of an capacitor Sr. No Colour Digit Multiplier Tolerance Voltage 1 Black 0 1 ± 20% - 2 Brown 1 10 100 3 Red…
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Semiconductors
What is a semiconductor? The semiconductors are the type of material which electrical property lies between conductor and insulator. Semiconductors act like insulator at very low temperature, as the temperature…
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Unijunction Transistor (UJT)
Electronic devices are mainly used in switching. BJT acts as a switch and is very simplest method but it has low efficiency and many faults. Therefore UJT and SCR are…
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Transformer
A transformer is a magnetic component or an electric component which transforms electrical a.c. power from one circuit to another circuit without changing the frequency. It works on principle of…
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Comparison between analog multimeters and digital multimeters
Analog multimeters Digital multimeters The analog multimeters provide measurement in analog form. The digital multimeters provide measurement in digital form. Power supply is not required in analog multimeters. Power supply…
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Application of capacitor
The capacitor used for storage of energy. It is used in filter circuits to minimize the ripple voltage. Capacitors are used to run the motor. Bypass the high frequency signals.…
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Inductors
What is an Inductor? A passive component which has the ability to store the magnetic field is called “inductor”. Inductor has property to pass D.C and oppose A.C. Inductor is…
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Comparison between analog voltmeter and digital voltmeter
Analog voltmeter Digital voltmeter In analog voltmeter the output signal representation is done by using potentiometric deflection. In digital voltmeter the output signal is represented in the digital form. The…
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Photodiode is operated in reverse bias
Why photodiode is operated in reverse bias? n the absence of light, the dark current flowing through the diode is of the order of few mA. In the presence of…