Electrical Comparator

Electrical Comparator



  • The principle of these comparators is to convert the linear displacement of the measuring stylus into an electric output
  • Whetstone bridge circuit is used for this comparator
  • When the circuit is balance no current is detected
  • Hence the following condition will exit
  • R1 = R3 R2 R4
  • Electrical Comparators are extremely sensitive and are capable of high magnifications up to 30000.


  • If one of these resistors is varied then imbalance in the circuit will result in a current flow through the galvanometer
  • By arranging the variable resistor a measuring head mechanism is formed
  • The galvanometer may be calibrated to read linear displacement
  • The whetstone bridge circuit is suitable only for D.C supply
  • Although the operating principle is same certain modification is that the resistors are replaced by inductors
  • Two of which are incorporated in the measuring head
  • When the stylus moves vertically, the circuit will become imbalance
  • This is due to the movement of iron armature between the inductors L1 and L2
  • The principle of Electrical comparators is to convert the linear displacement of the measuring stylus into electric output
  • Whetstone bridge circuit is used to measure the linear displacement

Comments

  1. AlayaSEO9 January 2022 at 16:33

    PCB Assembly refers to the attaching of electronic components to a printed circuit board. PCBs are used to mechanically connect and support electronic components using conductive pathways, traces or tracks which are etched from copper sheets laminated onto a non-conductive substrate. PCBA

    ReplyDelete

Post a Comment

Popular posts from this blog

English grammar error spotting finding correction exercise Practise set 36

Image
English grammar error spotting correction exercises practice set 36 In the following English grammar error spotting questions, some parts of the sentences have errors and some are correct. Find out which part of a sentence has an error. The number of that part is the answer. If a sentence is free from error, your answer is No error. Question 1: When I left (1)/ the house at 9 o'clock (2)/ my son was still at home. (3)/ No error (4) Answer Answer : (4) No error Question 2: There is (1)/ only one of his novels (2)/ that are interesting (3)/. No error (4). Answer Answer : (3) is will replace are because – when a Plural Noun is placed with a Singular Subject (one, each, etc.) with of, the Verb will be Singular. Look at the example given below : Only one of his employees is sincere at work. Only one of his students is awarded the ‘Scholar award’. Hence, that is interesting is the right usage. Question 3: The hockey match (1)/ between India and Pakistan (2)/ was much exci
All Blog Posts

pneumatic comparator and solex pneumatic comparator

Image
Principle of pneumatic comparator The measurement is made by taking reading using master gauge of known accuracy and comparing with component reading It uses a controlled, pressurised jet of air to measure small dimensional variation in the size of component The working principle of pneumatic comparator depends on the flow of air between the gauge head and the component being checked Important characteristics Very high magnifications are possible It can be used to measure diameters, length, squareness, parallelisms, concentricity,taper, and other geometric conditions. Internal dimensions can be readily measured , in other words, while measuring a bore it can reveal complete details of size, taper, straightness,camber and bell mouth etc. It is independent of the operator skill High pressure air gauging can be done by cleaning the parts which helps to eliminate errors due to dirt and foreign matter. As there is no physical contact made either with the setting gauge (or)
All Blog Posts

interferometer and interferometry

Image
Interferometer Interferometer is an optical device used for measuring flatness of a surface and also for determining the thickness of slip gauges. It is an extension of the application of optical flat. Interferometers are based upon the principle of “ interference “ and employ wavelength of light as their measuring units. The interferometers make use of beam divider that splits an incoming ray into two parts. These two parts of the ray travel along different paths until they are recombined, usually in the same beam divider. An interferometer is an optical device which utilizes the effect of interference. Typically, it starts with some input beam, splits it into two separate beams with some kind of beam splitter (a partially transmissive mirror), possibly exposes some of these beams to some external influences (e.g. some length changes or refractive index changes in a transparent medium), and recombines the beams on another beam splitter. The power or the spatial shape of the resulti
All Blog Posts