Showing posts with label Electronics. Show all posts
Showing posts with label Electronics. Show all posts
The Cathode Ray Oscilloscope
Introduction The following should give the student some familiarisation with the function and uses of the cathode ray oscilloscope (C.R.O.). Consider a s…
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What is Voltage?
Voltage is electric potential energy per unit charge, measured in joules per coulomb ( = volts). It is often referred to as "electric potential", wh…
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Common Emitter Transistor Amplifier
The larger collector current IC is proportional to the base current IB according to the relationship IC =βIB , or more precisely it is proportional to the…
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Working of SCR - Silicon Controlled Rectifiers
In solid state S/C silicon controlled rectifier , anode terminal is always kept at positive potential w.r.t cathode terminal. The load is connected in the se…
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How do electrons and holes flow in a transistor ?
We will now explain the operation for the transistor, using an NPN type. The same operation applies for the PNP transistors as well, but with currents and vo…
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How in common collector BJT configuration voltage gain is less than unity ?
The most striking characteristic of this configuration is that the input signal source must carry the full emitter current of the transistor, as indicated by…
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Commutator is the only difference b/w AC &DC motors or some thing else?
Ans. Following the the three main differences between AC and DC motor. 1. The most basic difference is the power source. A.C. motors are powered from alter…
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Transistor Basics
Transistors can be regarded as a type of switch, as can many electronic components. They are used in a variety of circuits and you will find that it is rar…
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Nodal analysis
The aim of nodal analysis is to determine the voltage at each node relative to the reference node (or ground). Once you have done this you can easily work out…
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WHAT IS THE SYMBOL OF POINT CONTACT DIODE?
Ans. There is no Specific Symbol for Point Contact Diode.The specific symbols are given below .
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What is the difference between alternating current and direct current.(College Level)
A battery cell gives "d.c." or "direct current" which means that a steady voltage is available to drive your radio or whatever. Less well …
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What is the significance of AC load line?
The ac load line is a graph that represents all possible combinations of and for a given amplifier. Under normal circumstances, the ac and dc load li…
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COMMON EMITTER CONFIGURATION OF A TRANSISTOR
COMMON EMITTER CONNECTION In this configuration, the input is applied between the base and the em…
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COMMON BASE CONFIGURATION OF A TRANSISTOR
COMMON BASE CONNECTION In this configuration the input is applied between the emitter and base and the output is taken from the collector and the …
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COMMON COLLECTOR CONFIGURATION OF A TRANSISTOR
COMMON COLLECTOR CONNECTION In this configuration the input is applied between the base and the collector and the output is taken from…
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Answers to Review Questions: Ch # 16 Electronics
XII BSEK ( Karachi Board) Q.16.1 Under what circumstances does a charge radiate electromagnetic wave? Ans.The Static charge will produce an electric…
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