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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.
Memory to Register This instruction is used to copy the contents of a memory locations whose address is specified by the HL register pair to any register. Before using th
Q. What do you understand by major systems of a telecommunication network? Explain in detail the subscriber loop systems. Ans: Major systems of any telecommunication netw
READY Input Microprocessor has to communicate with other peripherals which are slow as compared to the microprocessor. READY signals is used to synchronies these periphe
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Q. Explain Generating mode of rotating machines? The generating mode has mechanical power input and electric power output. The torque T applied externally to the shaft drives t
Consider the point-to-point radio link introduced in problem 9. By how much must transmit power be increased to maintain the maximum BER of 10-5 if the channel is flat Rayleigh-fad
What are plastics? Plastics are materials (containing carbon as common element) that have organic substances of high molecular weight and are able of being formed in required
Q. What do you mean by Lumped-circuit elements ? Electric circuits or networks are formed by interconnecting various devices, sources, and components. Although the effects of e
Determine the total active power: Circuit is introduced in the Face 1. It is about a single-wires face for a three-phase system. The voltage of the AC source is of 69kV. The s
Notations that are used in transistor circuits:- h ie = h 11e = Short circuit input impedance h 0e = h 22e = Open circuit output admittance
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