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Critical Dimensions[edit]

A comparator is also a device used in manufacturing to check critical dimensions.— Preceding unsigned comment added by (talk) 23:25, 27 March 2005‎ (UTC)[reply]

Rewrite necessary[edit]

This article needs grammatical work....mety— Preceding undated comment added by (talk) 16:57, 23 June 2006‎ (UTC)[reply]

Agreed it looks like it has either been directly translated from German, or the author's mother tongue is some Germanic language. I'll get on this when I can. --Daydreamer302000 (talk) 12:29, 16 June 2009 (UTC)[reply]
Ok, I've done what I can with the text of the article as it is. --Daydreamer302000 (talk) 09:17, 18 June 2009 (UTC)[reply]

Optical Comparator[edit]

Generally, a manufacturing comparator is properly called a optical comparator, the CNC ruby touch type comparators are called a CMM. B.— Preceding undated comment added by (talk) 06:49, 10 December 2006‎ (UTC)[reply]

Types of digital comparators[edit]

Digital comparators are two types
1)Identity comparators
2)Magnitude comparators

Identity comparators show only whether two inputs are equal where as Magnitude comparators indicate which input is smaller or larger.

Digital comparators differ in terms of
•Supply voltage
•Number of bits
•Propagation delay
•Operating current
•Operating temperature
— Preceding unsigned comment added by Gbalasandeep (talkcontribs) 19:56, 29 March 2009 (UTC)[reply]

Sections removed[edit]

I took out two recently added sections with the strangely capitalized "OP Amplifier" in their headings. These seemed to be partly copied (and [1]) from the cited source and partly mangled beyond interpretability; presumably new editor User:Smurfettekla is the same as the anon who added the first one. Hopefully he'll explain his intentions here so we can fix it. Dicklyon (talk) 05:08, 30 March 2009 (UTC)[reply]

Now as User:Berrinkursun, more uninterpretable stuff from the same book. I'm taking it out. If anyone wants to fix it, feel free. Dicklyon (talk) 02:47, 31 March 2009 (UTC)[reply]

Op-amp comparators[edit]

I'm taking a class on circuits and we're learning about op-amp comparators, including those with resistors that create hysteresis. This topic is not covered here.

Jojojlj (talk) 03:40, 3 May 2012 (UTC)[reply]


I found that the links on this page were dead since they linked to the old National Semiconductor datasheets. I updated them to the datasheet on the Texas Instruments website. Ksumatrob (talk) 05:04, 2 July 2014 (UTC)[reply]

Thanks. • SbmeirowTalk07:35, 2 July 2014 (UTC)[reply]

Multicomparator redirects here (but shouldn't?)[edit]

Multicomparator is not mentioned (and shouldn't here? or?). See: 128-bit: "multicomparator". comp.arch (talk) 10:10, 22 August 2014 (UTC)[reply]

Phase reversal[edit]

Near "using an operational amplifier as a comparator presents several disadvantages":

I think it is missing an item in the list - phase reversal will prevent usage of some operational amplifiers as comparators.

Source for phase reversal, e.g.

"Phase reversal occurs when a common-mode voltage, outside of the specified maximum range, causes the input stage to interact with the second stage causing an action that appears as if the input pins were reversed.".

--Mortense (talk) 12:41, 28 January 2017 (UTC)[reply]

Comparator that compares a state at different times[edit]

Can the article be edited to include the name (if any) for a comparator that compares a state (e.g., a voltage) at different times, rather than, say, comparing instantaneous voltages at two different nodes? (talk) 23:28, 12 May 2017 (UTC)[reply]

External links modified[edit]

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References "Figures" do not exist on page[edit]

In the section "Op-amp voltage comparator", the article references a "Figure 4", "Fig 5." and "the illustration" which either do exist on the page or are not properly labelled. — Preceding unsigned comment added by (talk) 15:17, 26 July 2018 (UTC)[reply]

Page appears biased towards AD/LT, TI/BB IMHO underrepresented. (talk) 08:43, 9 September 2021 (UTC)[reply]

@ I also notice the second time "Figure 1" is mentioned seems like it is a different "Figure 1" than the first time "Figure 1" is mentioned:

"In practice, this circuit can be improved by incorporating a hysteresis voltage range to reduce its sensitivity to noise. The circuit shown in Figure 1, for example, will provide stable operation even when the Vin signal is somewhat noisy." Em3rgent0rdr (talk) 08:16, 21 March 2022 (UTC)[reply]