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Q. What is thermal runaway.
The problem of self heating arises due to dissipation of power at the collector junction. The leakage current ICBO is extremely temperature dependent and increase with the rise of temperature of collector base junction. An increase in ICBO causes an increase in collector current IC considerabely. With the increase in collector current ,collector power dissipation increase which raises the junction temperature which leads to further increase in collector current. The process is cumulative and may lead to the eventual destruction of the transistor . This phenomenon is called thermal runaway.
Var Compensators Employing Flexible AC Transmission System Devices These are a new generation of VAr compensators which employ solid-state devices (thyristors) for the generati
Negative test cases for testing mobile phones are: 1.taking out the SIM card and made a call 2. by invalid phone number 3. Made a call at which there is no tower signa
Consider a GLC parallel circuit excited by i(t) = Ie st in the time domain. Assume no initial inductive current or capacitive voltage at t = 0. Draw the transformed network in the
In the circuit above, V1 is a dc supply which outputs 12V, R1 has a value of 100 Ω and C1 is 100µF. The switch has been left in the position shown for a long time such that there i
what is the significant of damping coficient
i have assignment about wien bridge oscillator i need help to how to degsin the circuit using ltpsic
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
Q. Explain about Common Control? Common Control: Those systems in which the control subsystem is outside the switching network are known as common control switching system. Str
Static Electricity : This is produced when two substances are rubbed together; the substances may be solids, liquids, or gases. Typical sources of static electricity are: i) dr
This project is about another particular application of a particular embodiment of the patent: A Long Stroke Steam Engine using Solar Generated Steam. The machine elements such as
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