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A 7.5° stepper motor (four phase), controlled by a computer, is used to position a telescope through a gear train. The telescope must be positioned to within 0.01°. A front panel has toggle switches that are used to specify how far the telescope is to move (LSB = 0.01°). The total range of the telescope is 0-60°.
a. How many toggle switches would be required?
b. What gear ratio would you specify?
c. Draw a block diagram of the system, showing all parts of the system and specifying the gear ratio.
What is the region of operation of an enhancement NMOS device if the gate is connected to the drain and a positive voltage greater than the threshold is applied to the drain with respect to the source? If the applied voltage is less than the thr..
why does the instruction set include an INC (DEC) instruction to increment (decrement) a memory byte when the same function could be accomplishe using an ADD (SUB) instruction
A full-wave bridge rectifier circuit with a 1-kohms load operates from a 120-V (rms) 60-Hz household supply through a 10-to-1 step-down transformer having a single secondary winding
Design a digital security system for a four-door sedan car. There are sensors on all doors, hood, gas cover, and the trunk. When the car is locked, an alarm will sound if somebody tries to force open the door, hood, gas cover, the trunk, or tries ..
An Opamp has a low frequency gain of 10^5 and a high frequency response with a single pole at 100 rad/s and a pair of poles at10,000 rad/s. (a) At what frequency does the total phase shift reach 180 degrees.
Suppose you are driving inside a tunnel. Assume that each of the two tunnels is 22ft wide and 13.5 ft tall. 1. Can you receive an AM radio signal in an automobile 2. Also determine weather FM signals can be received inside the tunnel.
find an expression for vDS in terms of iD. Sketch and clearly label a graph for vDS versus iD.
Design a mod-6 UP/DOWN counter: A) Using JK flip-flops and the state equation method. (Show the state diagram, state table, state equations, flip-flop input equations, and the logic diagram.)
A transformer core with an effective mean path length of 10 in has a 300-turn coil wrapped around one leg. Its cross-sectional area is 0.25 in2, and its magnetization curve is shown in Figure 1-10c. If current of 0.25 A is flowing in the coil, wha..
a new batterys voltage may be acceptable or unacceptable. a certain flashlight requires 2 batteries so batteries will
Estimate the approximate final speed v2 of the golf ball
a). Find the resistance of the aluminum wire 1 m long and 1 mm in diameter. For aluminum, resistivity is 2.8e-6 ohm-cm. b). What is the voltage drop across the wire for a current of 1 A The strength of the electric field inside the wire
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