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A Si IMPATT diode is operated at 140 GHz with a dc bias of 15 V and an average biasing current 150 mA.
(a) If the power conversion efficiency is 25% and the thermal resistance of the diode is 4OoCnV, find the junction temperature rise above the room temperature.
(b) If the breakdown voltage increases with temperature at a rate of 40 mV/"C, find the break-down voltage of the diode at room temperature, assuming that the space-charge resistance is 10 C& independent of temperature.
the worker's safety harness D-ring is attached to a 12-foot shock absorbing lanyard that is securely fastened to the structure at a point 40 feet above ground level. Does this arrangement violate OSHA standards for fall protection? Explain.
Define static electricity and State five sources of static electricity and Describe three methods used to reduce hazards due to static electricity
Show that for wires of identical dimensions but made of different materials, such as copper and aluminum, the resistance is proportional to the resistivity of the material. the resistance of a certain copper wire is 1.5.
A 9 GHz parallel polarized wave with an amplitude of 20 V/m is obliquely incident from air (z 0). Theta_i equals a 60-degree angle of incidence.
Looking at feedback and some Opamp problems, If the unity gain frequency is 5 MHz and the midband open-loop voltage gain is 200,000, what is the cutoff frequency?
Describe the functionality of the above DFSM using transition tables. Consider that the system starts always from state B. What happens if the system will start from another state - say A?
If each gold atom donates one electron to the gold matrix at room temperature, estimate the electron concentration of gold. Is gold a conductor?
Now that you have gained some familiarity with solar cells and their characteristics, what are your impressions about the efficiencies of these devices What are some applications for solar cells that are currently being used Why is this technology..
A 35-year old female worker receives an x-ray exposure of 5.2 rad (whole-body) while carrying out emergency procedures in a nuclear accident. Discuss the health risks assumed by this worker as a result of the radiation exposure.
the circuit has been connected for several seconds, find current in (a). in the 4.00 volts battery, (b). in the 3.00 ohm resistor, (c). in the 8.00 volts battery, (d). in the 3.00 volts battery and (e). find the charge on the capacitor?
Design a 2-digit 24 second "shot-clock" countdown timer with pushbutton controller.
Design a circuit that will add either 1 or 2 to a 4-bit binary number N. Let the inputs N3, N2, N1, N0 represent N. The input K is a control signal. The circuit should have outputs M3, M2, M1, M0, which represent the 4-bit binary number M.
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