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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.
1. Find the Nyquist rate for the following signals: (a) x(t) = 5 sin 3000Πt cos 4000Πt (b) A binary channel with bit rate 36000 bps is available for PCM voice transmission.
Q. explain the architecture of SS7 and compare with seven-layer OSI architecture. Ans: A block schematic diagram of CCITT no. 7 signalling system is displayed in figure. Sig
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ABCD propagation of an optical ray through a system can be described by a straightforward two by two matrix. In ray optics, the feature of a system is known by the correspondin
Ask question #Minimum 100 words accepted how does the charge plate relate to the movement of electrons
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