What is dual slope integrating type DVM?
What is dual slope integrating type DVM?
The dual slope integrating type DVM integrates the input voltage Vi. The slope of the integrated signal is proportional to the input voltage under measurement. After certain period of time, say t1, the supply of input voltage Vi is stopped, and a negative voltage -Vr of the integrator is applied.
Why is dual slope integrator type DVM preferred than ramp type DVM?
1. Why is dual slope method preferred over ramp techniques? Explanation: During the process of integration, noise is canceled out by the positive and negative ramps in the dual slope method. The input signal is integrated only for a fixed interval of time and this is the basis for the dual slope method.
Are integrating type of DVM?
Integrating type digital voltmeter (DVM): This voltmeter employs an integration technique that uses a voltage to frequency conversion. The heart of this technique is the operational amplifier acting as an Integrator. Input voltage is fed to integrator and its output is sensed by level detector.
How does a dual slope integrating ADC work?
The dual slope ADC mainly consists of 5 blocks: Integrator, Comparator, Clock signal generator, Control logic and Counter. The control logic resets the counter and enables the clock signal generator in order to send the clock pulses to the counter, when it is received the start commanding signal.
What is the main component of an integrating type DVM?
op amp
What is the main component of an integrating type DVM? Explanation: An op amp forms the heart of the integrating type DVM. Op amp is used as an integrator. The input signal is integrated for a fixed interval giving rise to a ramp signal at the output.
What is ramp type DVM?
The operating principle of the ramp-type DVM is based on the measurement of the time it takes for a linear ramp voltage to rise from 0 V to the level of the input voltage, or to decrease from the level of the input voltage to zero.
What are the types of DVM?
Types of DVMs
- (i) Ramp type DVM.
- (ii) Integrating type DVM.
- (iii) Potentiometric type DVM.
- (iv) Successive approximation type DVM.
- (v) Continuous balance type DVM.
What is DAC architecture?
The first architecture to consider is the string DAC or sometimes called the Kelvin divider DAC. The string DAC is one of the simplest methods to realize a DAC and is simply a collection of resistors in series with switching points or tap nodes between each of the resistors.
Which application uses dual slope converters?
In which application dual slop converter are used. Explanation: Dual slope converters are particularly suitable for accurate measurement of slow varying signals.
What is the range of DVM?
Explanation: In a DVM, the basic range is 1 V or 10 V. Range of a DVM can be extended from a few µV to kV. This is achieved by making use of an attenuator.
Why is a ramp DVM called so?
The heart of the circuit is the ramp generator. Therefore it is called ramp type digital voltmeter(DVM). The input which should be measured is given at input voltage. This input is fed to ranging and attenuator circuit which will amplify the signal if it is small or attenuates the signal if it is large.
What is DVM in control system?
Definition: Digital Voltmeter is a voltage sensitive device. It measures AC or DC voltage and displays the value directly in numeric form instead of pointer deflection.
