Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
V-I Characteristics
In the normal mode of operation of an IGBT a positive voltage is applied to the collector relative to emitter. When the gate is at zero potential with respect to E no collector current IC flows for collector voltage VCE below the breakdown level VB. When VC < VB and the gate voltage exceeds the threshold value VGT, electrons pass into the N- region ( base of the P-N-p transistor).
Figure V- I characteristics of IGBT
These electrons lower the potential of the N region biasing the P+ - N_ junction thereby causing holes to be injected from the P+ substrate into the N_ epi-layer region. The excess electrons and holes modulate the conductivity N+ region which dramatically reduces the on resistance of the device. With zero gate bins the forward characteristic of IGBT shows very low current (<1bA) where it breaks up sharply to much larger current levels with only a slight increase in voltage. The VI characteristics of IGBT is shown in figure it show the relation between collector current tc and collector to emitter voltage VCE for different values of gate to emitter voltage VGE.
The junction J1 blocks reverse voltage. An IGBT without N+ buffer layer has higher reverse blocking capability. Therefore an IGBT required for blocking high reverse voltage does not have N+ buffer layer. The reverse blocking voltage is shown as the VRM on the VI characteristics. The junction J2 blocks the forward voltage when the IGBT is off.
Aplication of resonance in different divices
Operation of heterodyne wave analyzer with block diagram
Q. Wire-line and Fiber-optic channel? Wire-line channels are used extensively by the telephone network for voice, data, and video transmission. Twisted-pair wire lines (with
ABCD propagation of an optical ray through a system can be explained by a simple 2_2 matrix. In ray optics, the characteristic of a system is given by the corresponding ray matrix
The new kitchen is to be 20feet long and it''s width is 75% of it''s length. The door to the kitchen is on the short wall and is 10% of the width of that wall. you want to put in m
Common-emitter configuration: The common-emitter that is abbreviated as CE transistor configuration is displayed in figure. The transistor terminal common to both the input
Define NOT Gate - Microprocessor? The NOT GATE which is as well called an Inverter, is used to invert the logic state of a signal. The output Q is true while the input A is NOT
A 9.1V zener diode has a nominal voltage fall at a test current of 28mA. The internal resistance of the zener diode is 5 ohms. Find the voltage drop across the zener diode at zener
Delay time ( t d ) Initially a thyristor remains in forward blocking stat when anode to cathode forward voltage is applied and gate to cathode circuit is opened. As t
Measures for Improving Joints and Connection 1. Spacing of poles: The spacing between poles (for overhead lines) is also an important requirement. Long spans will result in
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!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd