Please can you explain why a 13-bit analogue-to digital-convertor (ADC) is often used in pulse code modulation (PCM) when only 8-bits are transmitted. Then, why following compression in PCM, how and why is an inverter used?
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Please can you explain why a 13-bit analogue-to digital-convertor (ADC) is often used in pulse code modulation (PCM) when only 8-bits are transmitted.
Then, why following compression in PCM, how and why is an inverter used?
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- Question- A single phase full bridge inverter controls the power in a resistive load by uniform multiple pulse modulation. The frequency of triangular carrier wave is 1kHz and inverter reference wave frequency is 125Hz. If the total pulse width is 120°, find the width of each pulse?In single pulse modulation of PWM inverters, the pulse width is 120°. For an input voltage of 220 V dc, what is the r.m.s. value at the fundamental component of the output voltage?The output voltage of a single-phase full-bridge inverter is controlled by pulse-width modulation with one pulse per half-cycle. Determine the required pulse width so that the fundamental rms component is 70% of dc input voltage.
- Construct 3 input NAND using Register Transistor Logic (RTL).Design a 4-bit BCD to Gray Code Converter by using Programmable Array logic.Example Assuming that a 3-bit ADC channel accepts analog input ranging from 0 to 5volts, determine a- The number of quatization levels b- The step size of the quantizer or resolution. c- The quantization level when the analog voltage is 3.2 volts. d- The binary code produced by the ADC. e- The quatization error when the analog voltage is 3.2 volts.
- Q2) A) Based on the count sequence and decoding operations of 74LS90S ICs shown in Figure below. Q2) B) Use the SAR ADC to convert the analog voltage of (7.28 V) to 8-bit binary. If (VREF = 10V), determine the final %3D binary answer and the percent error. 01011101, 0.1974588% 11011101, 0.1974588% 01011111, 0.1974588% 01111101, 0.1974588%The output voltage of a single-phase full bridge voltage source inverter is controlled by unipolar PWM with one pulse per half cycle. For the fundamental rms component of output voltage to be 75% of DC voltage, the required pulse width in degrees (round off up to one decimal place) isR. Convert the following octal numbers to binary: (a) 468 (b) 7238 Q. The input waveforms applied to a 4-input AND gate are as indicated in Figure 1. The output of the AND gate is fed to an inverter. Draw the net output waveform of this system. 4900
- Problem #4: Consider the Programmable Array Logic PAL module below '1' A B C D F₁ F2 F3 1. Determine the corresponding product term per row PRODUCT TERMS 000000A full-bridge inverter has a switching sequence that produces a square wave voltage across a series RL load. The switching frequency is 60 Hz, Vdc=100 V, R equals to 10 Ohm, and L equals 25 mH. The average current in the dc source is. Select one: O a. 52 A O b. None of the above O c. 4.41 A O d. 300 AQ2/ The information in an analog signal voltage waveform is to be transmitted over a PCM system with an accuracy of ±0.1% (full scale). The analog voltage waveform has a bandwidth of 100 Hz and an amplitude range of -10 to +10 volts. Find the minimum sampling rate required. i) ii) Find minimum bit rate required in the PCM signal. Find the number of bits in each PCM word. iii) iv) Find the minimum absolute channel bandwidth required for the transmission of the PCM signal.