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A power transistor is specified to have a maximum junction temperature of 150C. When the device is operated at this junction temperature with a heat sink, the case temperature is found to be 97°C. The case is attached to the heat sink with a bond having a thermal resistance θCS =0.5°C/W and the thermal resistance of the heat sink θSA =0.1°C/W. If the ambient temperature is 25°C, what is the power being dissipated in the device? What is the thermal resistance of the device, θJC , from junction to case?
It operates at a bias current of 0.1 mA between a source with Rsig =rπ and a load RL =βro. Let CL =Ccs =0, and rx =0. Find the overall voltage gain at dc. By evaluating the various components of τH show that the pole introduced at the output mode ..
What is the definition of "Nyquist rate"? What is the "Nyquist sampling theorem"? Plot the signal ??(??) = sin(4????).
Determine the airflows and pressure drop in each of the branches and what are the flows and pressure drops in each of the branches?
Compare and contrast DCS, PLC, and SCADA systems, define PLC, DCS, and SCADA and discuss discrete and analog I/O points
Policy Research Paper: Mobile Application Security. Research and write a 5-pageacademic research paper on one of the following policyrelated topics
How long has this situation been going on? Why did the problems begin when they did? Am I able to solve the problem at its root cause or am I only able to manage the impact of the problem? Is this a temporary or permanent problem? How has the company..
Design the two-stage CMOS op amp in Fig. to provide a CMRR of about 72 dB. If all the transistors are operated at equal overdrive voltages of 0.15 V and have equal channel lengths, find the minimum required channel length. For this technology, / V..
Calculate the volumetric flow rate and the mass flow rate(ENMIN 5023 Mine Ventilation)- determine the average flow velocity of the air and the air quantity flowing - what particular precautions have to be taken when undertaking such a traverse?
A precast concrete wall section is temporarily held by two cables as shown. Knowing that the tensions in cables BD and FE are 900 N and 675 N, respectively, determine the moment about point O of the force exerted by
Air pressure decreases as altitude increases. At 18,000 ft above mean sea level, the atmospheric pressure is about half of what it is at sea level (i.e.,760 torr). The temperature also decreases by about 70 C. Does this change the speed distributi..
Describe term Public Relations Research
Which one of the following expresses an impedance of 50 OHMS with no resistance component in rectangular coordinates - The bandwidth of a series-tuned circuit is that range of frequencies between where the voltage is of the maximum voltage.
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