## Dual-ramp analog to digital converter, Electrical Engineering

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Q. Dual-ramp analog to digital converter?

Figure (a) shows the block diagram of a dual-ramp (dual-slope) A/D converter. After a start-of-conversion pulse, the counter is cleared and the analog input Vin becomes the input of the ramp generator (integrator). When the output of the ramp generator Vo reaches zero, the counter starts to count. After a fixed amount of time T, as shown in Figure (b), the output of the ramp generator is proportional to the analog input signal. At the end of T, the reference voltage Vref is selected, when the integrator gives out a ramp with a positive slope. As Vo increases, the counter is incremented until Vo reaches the comparator threshold voltage of 0 V, when the counter stops being incremented again. The value of the counter becomes the binary code for the analog voltage Vin, since the number of clock pulses passing through the control logic gate for a time t is proportional to the analog signal Vin. Dual-ramp A/D converters can provide accuracy at low cost, even though the process is slow because a double clock pulse count is an inherent part of the process #### Calculate the iron loss, Q. The efficiency of a 400-kVA, single-phase, 60-H...

Q. The efficiency of a 400-kVA, single-phase, 60-Hz transformer is 98.77% when delivering full-load current at 0.8 power factor, and 99.13%with half rated current at unity power fa

#### Decimation in time., examples problems for decimation in time

examples problems for decimation in time

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Usage of transistor: The bipolar junction transistor that is abbreviated as BJT was the most generally used transistor in the 1960s and 70s. Even later than MOSFETs became ext

#### Name 5 different addressing modes, The five addressing modes are given belo...

The five addressing modes are given below: Immediate, Register, Direct, Implied addressing modes           Register indirect,

#### Consequent effects on the real and reactive power losses, Q. Consider an up...

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#### Example of binary subtraction - positive number , Example  of binary  sub...

Example  of binary  subtraction - positive number Case 1.   Positive  number is more than negative number ( i e, answer is positive)   Example   subtract  4510 ( 1011012

#### Dsp., fir and iir filter design

fir and iir filter design

#### Explain the different coupling schemes used in amplifiers, Q. Explain the d...

Q. Explain the different coupling schemes used in amplifiers? When amplifiers are cascaded, it is necessary to use a coupling network between the output of one amplifier and th

#### Voltage transfer function of the high-pass filter, Determine the voltage tr...

Determine the voltage transfer function of the high-pass filter circuit shown in Figure, and find the expression for ω 0 .

#### Uses of fet, Uses of FET IGBTs (Insulated-gate bipolar transistor) se...

Uses of FET IGBTs (Insulated-gate bipolar transistor) see application in switching internal combustion engine ignition coils, in which fast switching and voltage blocking cap  