Pnp bipolar junction transistor, Electrical Engineering

Assignment Help:

PNP

The other kind of BJT is the PNP with the letters "P" and "N" standing for the majority charge carriers inside the dissimilar regions of the transistor.

1519_PNP Bipolar Junction Transistor.png

Figure: The symbol of a PNP Bipolar Junction Transistor.

PNP transistors contain a layer of N-doped semiconductor among the two layers of P-doped material. A small current that is leaving the base in common-emitter mode is amplified in the collector output. In other words, a PNP transistor is "on" while its base is pulled low relative to the emitter.

The arrow (shown in figure) in the PNP transistor symbol is on the emitter leg and points in the direction of the conventional current flow while the device is in forward active mode.

One mnemonic device for making out the symbol for the PNP transistor is "pointing in proudly / 'pointing in - pah'."


Related Discussions:- Pnp bipolar junction transistor

What are the kinds of transformations, What are the kinds of transformation...

What are the kinds of transformations? Illustrate each with the help of homogeneous matrix form in 3-D.

Circuit theory, matlab program for verifying maximum power transfer

matlab program for verifying maximum power transfer

Port address - address bus , Port Address The port  address  is of 8 bi...

Port Address The port  address  is of 8 bit  it is range from 00H  to FFH. It means  there may be total  i 256 input  ports and 256  output  port which can be accessed by 8085

Merits and demerits of fixed bias with emitter resistor, Merits: The ci...

Merits: The circuit has the trend to stabilize operating point against changes in temperature and β-value. Demerits: In this type of circuit, to keep I C  independent o

Describe the phasor equations, Q. Describe the following phasor equations r...

Q. Describe the following phasor equations represented in the time domain: (a) ¯ E = K1e-¯ γz (b) ¯ E = K2e ¯ γz where z is the space coordinate, K1 and K2 are constants,

Determine a normalized frequency at 820nm, Determine a normalized frequency...

Determine a normalized frequency at 820nm for a step index fibre having 25µm core radius. Given n 1 =1.48 and n 2 =1.46.Also calculate how several modes propagate within this fibre

Give the classification of oscillators, Q. Give the classification of oscil...

Q. Give the classification of oscillators. Discuss the frequency stability of oscillators. Oscillators are classified in the following different ways. 1. According to the wa

Zinc-blend and si diamond lattice structure, What is the difference between...

What is the difference between a zinc-blend and Si diamond lattice structure?

Addressing model , Addressing Model As we have learned  already  that ...

Addressing Model As we have learned  already  that each instruction has two  parts  one is  op code and another  is operand. Op code  specified  the type  of operations to be

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