Active-mode pnp transistors in circuits, Electrical Engineering

Assignment Help:

Active-mode PNP transistors in circuits:

In the figure, the arrows showing current point in the direction of conventional current - the flow of electrons is in the opposite direction of the arrows since electrons carry negative electric charge. Within active mode, the ratio of the collector current to the base current is called the DC current gain. This gain is generally 100 or more, but robust circuit designs do not depend upon the exact value (for instance see op-amp). The value of this gain for DC signals is considered to as hFE, and the value of this gain for AC signals is considered to ashfe.

 Though, while there is no particular frequency range of interest, the symbol β is employed. It should as well be noted that the emitter current is related to VBE exponentially. At room temperature, increment in VBE by almost 60 mV increases the emitter current by a factor of 10. Since the base current is approximately proportional to the collector and emitter currents, they change in the same way.

1656_Active-mode PNP transistors in circuits.png

Active-mode PNP transistors in circuits


Related Discussions:- Active-mode pnp transistors in circuits

What are encoder and the decoder, There are zillions of things in electroni...

There are zillions of things in electronics known as encoders. You can look up LCDs and NAND gates as well and this is actual basics.

Which stack is used in 8086, FIFO (First in First Out) stack is used in 808...

FIFO (First in First Out) stack is used in 8086.In this type of Stack the first stored information is retrieved first.

Determine the rectified load voltage, Consider the circuit of Figure (a) wi...

Consider the circuit of Figure (a) with v S (t) = 10 cos ωt. Use the piecewise-linear model of the diode with a threshold voltage of 0.6 V and a forward resistance of 0.5  to dete

Technical losses in power systems, Technical Losses in Power Systems T...

Technical Losses in Power Systems The technical losses in power systems occur because of energy dissipated in the conductors and equipment used for transmission, transformat

Explain the working of elecro static precipitator, With the help of neat an...

With the help of neat and clean diagram illustrate the working of Elecro Static Precipitator (ESP). Describe the following: (a) Coal Handling Systems (b) Coal Storage

What are frequency response curves, Q. What are frequency response curves? ...

Q. What are frequency response curves? How are they made? Every amplifier has a frequency-response curve associated with it. They provide a "picture" of the performance of an a

Working of centre tap full wave rectifier, (a) What is understand by clippi...

(a) What is understand by clipping circuit. Draw and illustrate different types of diode clipping circuits? (b) With the help of circuit diagram describe the working of centre t

Determine the value of rl, Q For the circuit of Figure: (a) Find an...

Q For the circuit of Figure: (a) Find an expression for the power absorbed by the load as a function of R . (b) Plot the power dissipated by the load as a function of th

Function of time base generator, Q. Explain the function of time base gener...

Q. Explain the function of time base generator in CRO. Sol. Oscilloscopes are used to display a waveform that varies as a function of time. If the waveform is to be accuratel

Salient features of nep, Salient Features of NEP: Access to electrici...

Salient Features of NEP: Access to electricity: The policy not only envisages access to electricity for all but it also emphasizes in which all consumers, particularly t

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd