What are the disadvantages of the mechanical comparators?

What are the disadvantages of the mechanical comparators?

Disadvantages : (1) Due to more moving parts, the friction is more and subsequently less accuracy obtained. (2) The accuracy of this comparator is considerably reduced due to backlash. (3) Less sensitive due to inertia of moving parts. (4) Errors due to parallax is possible as moving pointer moves over a fixed scale.

What are the mechanical comparators?

(microcator), a measuring instrument whose mechanism is in the form of a tape spring twisted in the middle part, which rotates through a definite angle upon tension (Figure 1). It is used for linear measurements by the relative contact method.

What is the advantages of mechanical comparator over others?

What is the advantage of mechanical comparator over others? Explanation: Mechanical comparator is cheaper as compared to others. Mechanical comparators have more moving parts due to this friction is more and accuracy is less. External supply is not required.

How will you categorize the different types of mechanical comparators?

There are four types of mechanical comparators available.

• Dial Indicator.
• Johansson Mikrokator.
• Reed type Mechanical Comparator.
• Sigma Comparator.

Is a type of mechanical comparator?

A Lever Comparator is a simple and important type of mechanical comparator. It employs a ‘lever’ for obtain magnification of movement or displacement. Principle of Operation: These plunger movements are magnified, by lever and deflect the pointer on a graduated scale.

What is not a type of mechanical comparator?

This discussion on Which of the following is not a type of a comparator? a)Dial indicatorb)Sigma comparatorc)Optical leverd)InterferometerCorrect answer is option ‘D’.

Which one is a basic comparator?

Which one is a basic comparator? Explanation: Generally, an XNOR outputs high for even number of 1s or all 0s and outputs low for otherwise. Thus, an XNOR gate is a basic comparator, because its output is “1” only if its two input bits are equal. Explanation: Comparators are used in the central processing unit (CPUs).

What is the drawback in zero crossing detector?

What is the drawback in zero crossing detectors? Explanation: Due to low frequency signal, the output voltage may not switch quickly from one saturation voltage to other. The presence of noise can fluctuate the output between two saturation voltages.

What is the use of zero crossing detector?

Zero-crossing detectors are used to synchronize switching with the AC wavelength or to extract the timing signal. By using zero crossing techniques, high inrush currents can be avoided.

What is the purpose of a comparator?

A comparator circuit compares two voltages and outputs either a 1 (the voltage at the plus side; VDD in the illustration) or a 0 (the voltage at the negative side) to indicate which is larger. Comparators are often used, for example, to check whether an input has reached some predetermined value.

Can op amp amplify both AC and DC?

Op-amps can amplify both DC and AC signals.

Why CMRR is measured in dB?

The CMRR is a very important specification, as it indicates how much of the common-mode signal will appear in your measurement. The CMRR of the measurement instrument determines the attenuation applied to the offset or noise.