sigma comparator wiki
#1

can you please tell me the procedure of sigma comparator..?
Reply
#2

Comparators are classified into several types, such as electronic comparators, electrical, mechanical, optical, sigma, digital and pneumatic, these are used in various applications. Comparators play an essential role in the design of electrical and electronic projects. In electronic circuits, an op-amp is used with negative feedback and can also be used as a comparator. The comparator is designed primarily without feedback for open loop configuration. These are widely used in A / D converters. When the i / p signal is sampled, then this signal is applied to multiple comparators to convert the digital form of analog. Comparator applications mainly involve BLDC operation motors, zero crossing detectors, switching power controllers and peak detectors. 

The Sigma Comparator


[Image: tmpB10_thumb_thumb.png?imgmax=800]
FIG. Shows the constructive details of Sigma

Mechanical comparator

The vertical beam is mounted in flat steel Springs A connected to fixed elements, which in turn They are screwed to a back plate. The set provides a Movements without friction with a restriction of Springs The rod B at the base of the vertical beam is Ready to take a measuring contact, The range available. The stop C is provided to restrict movement to The lower end of the scale. Mounted on the fixed members, is the article Set D carrying the forked arms E. This assembly It incorporates a hardened fulcrum (provided with Means for adjusting the control of the trans- Moved) on the face of a jeweled insert In the flexible part of the set. The metal tape, attached to the forked arms, It passes around the G-axis that rotates it in Specially designed miniature ball bearings. Dipping The action to the movement is affected by a metal disc, Mounted on spindle, rotating in a magnetic field Between a permanent magnet and a steel plate. the Indicating the pointer H is secured to a protrusion on the disk.

The trigger J (opposite K) is used to protect the measuring contact. At the upper end of The vertical beam provides an adjusting screw for the final zero adjustment of the scale. A new feature is shown in K. This is a magnetic counterweight that serves To neutralize the positive "rate" of springs reaching the measuring tip. In this way, a constant Pressure is reached on the whole scale. The instrument is available with vertical capacities of 150 mm, 300 mm and 600 mm And extensions of 500.1000, 1500, 3000 and 5000. The scales are graded in English And metric systems. The minimum count representing a division of the order of 0.25 microns.

Advantages: 

It has a bold scale and a larger indicator.

Disadvantages:

 (i) Due to the movement of the parts, there is wear on the moving parts.
 (Ii) Not as sensitive as other types of comparators due to friction Present in moving parts.
Reply

Important Note..!

If you are not satisfied with above reply ,..Please

ASK HERE

So that we will collect data for you and will made reply to the request....OR try below "QUICK REPLY" box to add a reply to this page
Popular Searches: sigma comparator wiki, sigma comparator animation ppt download, features of sigma comparator wikipedia,

[-]
Quick Reply
Message
Type your reply to this message here.

Image Verification
Please enter the text contained within the image into the text box below it. This process is used to prevent automated spam bots.
Image Verification
(case insensitive)

Possibly Related Threads...
Thread Author Replies Views Last Post
  jazz multisensor wiki 0 434 18-05-2018, 07:03 PM
Last Post: Guest
  veena bannanje wiki 1 717 23-02-2018, 08:53 PM
Last Post: Guest
  family activities into monetary and non monetary activities wiki 0 720 19-02-2018, 04:05 PM
Last Post: Guest
  how wire bose sigma 975 rear speakers 0 494 09-11-2017, 03:16 PM
Last Post: Guest
  bose sigma 984 front amp wiring diagram 1 735 24-10-2017, 11:34 AM
Last Post: jaseela123d
  animation of construction working of sigma comparators 1 520 11-09-2017, 12:04 PM
Last Post: jaseela123d
  power hump wiki 1 749 26-07-2017, 09:40 AM
Last Post: jaseela123d
  shares and dividends icse wiki 1 767 26-07-2017, 09:38 AM
Last Post: jaseela123d
  anti plastic campaign laws in india wiki 1 1,193 29-06-2017, 11:07 AM
Last Post: jaseela123d
  edge avoider robot wiki 1 660 19-04-2017, 09:20 AM
Last Post: jaseela123d

Forum Jump: