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As the applied base-collector voltage (VBC) varies, the base-collector depletion region varies in size. This variation causes the gain of the device to change, since the gain is related to the width of the effective base region. This effect is often called the "Early Effect"
An NPN bipolar transistor can be considered as two diodes connected anode to anode. In normal operation, the emitter-base junction is forward biased and the base-collector junction is reverse biased. In an npn-type transistor for example, electrons from the emitter wander (or "diffuse") into the base
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What is early effect?
the early effect is a width base modulation due to which collector curren inc by inc of c-b voltage
What is need of space vector pulse width modulation?
due to space vector modulation we can eliminate the lower order harmonics
Which modulation technique is most prone to noise PWM or AM?
AM = Amplitude Modulation and is more prone to noise because the signal amplitude caries the intellegence, Noise changes this easily. PWM is Pulse Width Modulation and noise does not change the width of the pulses, though it may introduce other pulses. Therefore the original intellegence is still recoverable.
Application of pulse width modulation?
PWM finds use in power applications like dc motor speed control
What are the types of pulse modulation?
Pulse width mod, pulse amplitude mod, pulse position mod, pulse code mod.
What does Base stand for in 100BaseT?
"Base band", meaning that no modulation is used."Base band", meaning that no modulation is used."Base band", meaning that no modulation is used."Base band", meaning that no modulation is used.
What is the difference between space vector modulation and pulse width modulation?
There is no difference.
What is early effect?
the early effect is a width base modulation due to which collector curren inc by inc of c-b voltage
What do you mean by pulse width modulation?
pulse width modulation is nothing but changing on and off time period of a waveform without changing its frequency
Space vector modulation for matrix converter?
space vector modulation id an algorithm of the control of the control of pulse width modulation
Explain with diagram the technique Pulse-amplitude modulation?
Explain with diagram the technique Pulse-width modulation?
What is need of space vector pulse width modulation?
due to space vector modulation we can eliminate the lower order harmonics
Why do you not use frequency modulation in long range transmission?
Frequency modulation is not used for long distance transmission because it has the problem of limited band width.
Which modulation technique is most prone to noise PWM or AM?
AM = Amplitude Modulation and is more prone to noise because the signal amplitude caries the intellegence, Noise changes this easily. PWM is Pulse Width Modulation and noise does not change the width of the pulses, though it may introduce other pulses. Therefore the original intellegence is still recoverable.
What is base with modulation?
AM wave is produced by applying the modulating voltage to the base of a transistor amplifier.
How do you calculate the width of pulse in pulse position modulation?
The width of the pulse in PPM is not important, but is usually very narrow and constant in any given PPM system.
How many types of pulse width modulation techniques are there?
as many as there are ways to place points on a line segment
