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Determine in each case whether the indicated signal x(t) isperiodic. If x(t) is periodic, find its fundamental frequence in Hzand fundamental period in seconds. a)x(t) = 3-5cos(1080t) + 7cos(2160&pi
Let the load resistance R = 100ohms and the filter capactitor C = 100 uF. Find the average dcoutput voltage, the time interval during which the diode conducts,the average diode current durring condu
A) Explain why there is a maximum limit on the size of emitter resistor in a UJT circuit. B) Explain why there is a minimum limit on the size of emitter resistor in a UJT circuit.
The nameplate on a 50 kVA transformer shows a primary voltage of 480 V and a secondary voltage of 120 V. We wish to determine the approximate number of turns on the primary and secondary windings.
Design a combinational circuit that compares two 4-bit unsigned numbers A and B to see whether B is greater than A. The circuit has one output X, so that X = 1 if A < B and X = 0 if A >= B.
Draw the schematic diagrams for half wave and full wave rectifier and their typical output waveform. Also write formulae to determine i) Peak load voltage ii) DC load current
The pixels in a certain CCD camera have identical sensitivity functions w(x,y).Write the spectrum Fs(u,v) of the sample function fs(x,y) measured by the camera. what filter H(u,v) is required to
David has a collection of resistors of various values, but all are rated for the same power capacity of 2 watts. Show how he can combine resistors to obtain an effective resistance of 50 ohms rated
A mosfet amplifier has attribute for wwhich the mid band voltage gain between gate and drain is -27V/V the nmos trensistor has Cgs=0.3 pf and Cdg=0.1 pf. What input capacitance should be
a new type of battery deleivers 10 watt of powr for 8 hours without voltage or current fluctuation. after 8 hours, however thepower output drops linearly from 10 watt to 0 in only 5minutes. (a). wha
Explain the differences among a truth table, a state table, a characteristic table, and an excitation table. Also explain the difference among a boolean equation, a state equation, a characteristic
Provide an output V to indicate that at least one of theinputs is present. The input with the highest subscript number has the highest priority. What will be the value of the four outputs if inputs
A silicon diode with an area of 100mm´100mm is doped with ND=2e17cm-3 and NA=1e20cm-3. It has an IS=1fA, nonidealityfactor n=1 and tT=1ns. Consider room temperature of 300 Degree Kelvin.
Design a circuit to multiply two 2-bit numbers -a,b and c,d and produce a 4-bit product -w,x,y,z. Show the truth table and the equations.
A step-down transformer has a 120V rms primary voltage applied and a 12V rms voltage is measured at thesecondary. Assuming the transformer can be considered ideal,determine the turns ratio, n.
A potentiometer is used to measure the position of a shaft. theinput range of shaft position is from - 160o to +160o . the corresponding output range is from -20 to +20 v. what is the span of this p
design a DC power supply with an ouput voltage of 12 v from an Ac source of120 v rms and 60 HZ. the rms ripple voltage should be limited to10% of the DC output. use a load resistance of 10 KΩ
design a Zener regulator with an output voltage of 7.5 v. the supply voltage can vary between 10 v and 25 v and the load current between 10 mA and 60mA.
design a circuit to limit the output voltage between -5v and+5v. the input is a sinusoidal source with a peak value of 10 v and a frequency of 1KHz.
A coil with an unknown resistance and inductance isconnected in series with a resistor of 12 ohms and a capacitor of168 micro farads. The circuit is connected across a 220V 50Hzsupply, with lagging
Design a 4-bit down counter with truncated sequence that count down a truncated sequence from 1111 to 0101. On reachingthe count value 0101, the counter must preset to 1111. Also draw its timing dia
The manufacturer of a 6 Volt dry-cell flashlight battery says thatthe battery will deliver 15 mA for 10 hours. During that time, thevoltage will drop from 6 Volts to 4.7 Volts. Assume the drop invol
There are four oscilloscopes , A ,B, C,D in a laboratory that areequipped with individual indicator circuits. There indicator circuits give our a logic 1 any time the scope mal functions.
The vaultdoor will be equipped with a vibration sensor that will cause aswitch to close it the vault is disturbed, ans a switch will bemounted on the bank door in such a way that i will close whenev
A home entertainment center has four different audio sources that can be played over the same set of speakers. Each audio source, named A,B,C,D, is connected using 8 wires on which the digitizedaud