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An electro-optic amplitude modulator is built using a liquid crystal device, a quarter-wave plate and a polarizer. If it is desired to implement modulation of a laser source such that the transmission factor would change between 10% and 90% in a square-wave fashion with a frequency of 1kHz. Sketch the waveform of the voltage signal V that needs to be applied to the liquid crystal modulator if V?=5V. Make sure to mark significant points in your figure (amplitude, offset, time, etc.). How could a device be modified to work as an electro-optic phase modulator? If we apply signal V, what is the range of phase shifts induced by this modulator.
with general block diagrams, show how to obtain the following frequencies from a 10 MHz clock by using single flip-flop, modulus-5 counters, and decade counters for 5MHz 2.5MHZ 2MHz 1MHz 500kHz 250 kHz 62.5 kHz 40 kHz 10 kHz 1 kHz
What is the channel capacity for a channel with a 300 Hz bandwidth and as S/N = 3? 2nd problem: Given a channel with a 50 kHz bandwidth and a S/N = 127, determine:
For the amplifier in Fig. P4.20, the maximum value of VS is 2 V and the op-amp can deliver no more than 100 mA. (a) If +-10 V supplies are used, what is the maximum allowable value of R2 (b) Repeat for +-3 V supplies.
In a CD player, the sampling rate is 44.1 kHz and the samples are quantized using a 16-bit/sample quantizer. what is The resulting number of bits for a piece of music with a duration of 50 minutes.
1)Why BJT is called a bipolar and current controlled device 2)What are the different modes of operation in BJT and in which region it act as an amplifier 3)Why Emitter is highly doped ,base lightly doped and collector moderately doped
a sample of 0 385 gram of cus was formed by heating a mixture containing 0.318 gram of copper and 1.00 gram of sulfure according to the reaction , Cu + S ---> CuS. A) is copper or sulfer the limiting reactant B) calculate the theoretical and the pe..
A silicon diode with a breakdown voltage of 2000V that is conducting a forward current of 2000A is turned off with a constant diR/dt=250 A/s. Roughly estimate the time required for the diode to turn off.
Steam at 3.45 MPa, 260oC enters a well-insulated valve operating at steady state with a mass flow rate of 0.05 kg/s through a 2.54 cm diameter pipe. The steam expands to 1.40 MPa with no significant change in elevation.
The R2= 6 homs load in the circuit is absorbing four times as much average power as the R1 = 20 ohmsohms load. The two loads are matched to the sinusoidal source that has an internal impedance of 500 (angle) 0 1)What is the numerical value of a1
If these nominal non--ideal parameters are replaced, one at a time, by A = 50000, Ri = 1 M and R0 = 150 (each of which is twice as bad as the nominal values), which parameter has the largest impact on the output voltage
Write a simple shell script called mathmagic that takes two arguments in at call time and returns to the stdout the value of the two items entered, the value of the two items added together, the value of the two items subtracted
A HCS12 ATD is set to 10-bit unsigned mode. The voltage references are set to ground and 1.0V What is the ADT output for a temperature of 81 degrees The temperature sensor measures 0 to 100 degrees with an output of 10 mV/degree.
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