Post History

Apart from correcting capitalization, which is a valid change, I think you are at the same time doing a lot of subjective changes to certain tags and it can get very intrusive on the site. I don't agree with a lot of the tag changes proposed here. 

First of all, please note that there is no criteria stating that a tag must be able to "stand alone" - sometimes a topic is filtered out by a combination of tags. For example the tag `analog` may be an "adjective tag" but it could be meaningful in combination with various other tags,  to narrow down the scope to a specific term. 

For example `analog` + `ground` might make sense for tagging questions about grounding in a RF circuit. `safety` + `ground` might form another perfectly valid tag combination for an entirely different topic, namely VAC power supplies. Sometimes it might make sense to form a specific tag like `safety-ground`, sometimes it might not. Mostly depending on if there exists a widely established engineering term or not.

Things like analog comparators, analog switches, analog-to-digital converters do need their own specific tags since they are about a specific kind of IC and these are all well-established terms/names.

Whereas I don't think that "AC-circuit" and "AC-power" are necessarily well-established terms. The first can mean anything, the latter should perhaps be tagged VAC.

As mentioned in another thread, just because something is super common like `voltage`, `current` or `ground`, it doesn't automatically make that an invalid tag. Because once again, tags do not need to be stand-alone. It is not always convenient to form a single tag out of several.

The main criteria for tags: they must be related to electrical engineering and they must correspond to commonly used terms in electrical engineering, physics or applied electronics. It need not necessarily be the best or most technically correct term.

For example DC-DC or DC/DC (converter) is a common term for buck and or boost converters. "Buck" and "boost" are in turn kind of synonymous for step-up and step-down. There is no single correct term and none of these are particularly accurate (the converter technology itself might be the more correct name: linear, flyback, sepic or whatever).

SMD is, I believe, a more common term than SMT. Both are commonly used. These should be synonyms, as should surface-mount-device and surface-mount-technology.

MOSI is a common, de facto standard name for a SPI signal. There's no reason to delete it.

"op-amp" should probably be made synonymous for operational-amplifier.

Coils are common electronic components and the tag can make perfect sense in combination with other tags, for example coil + voltage for a relay question. The alternative is to create a whole lot of strange tags: coil-voltage, coil-current, coil-resistance, coil-temperature and so on - just to mention some thing that may be relevant in terms of relay coils specifically.

SAR should probably be deleted since it is ambiguous. It _probably_ means successive approximation ADC, but it could as well mean Specific Absorption Rate and a couple of other things.

---

Conclusion:

I don't think we need to have a huge meta discussion for every tag change like on Someplace Else, because that's burdensome and it isn't reasonable that it should take more effort to change a tag than it took to create it in the first place. I actually think it is way too easy to create tags on Codidact.

But on the other hand we should avoid situations where a single person unanimously goes ahead with major tag changes. A reasonable middle-ground might be to create some manner of moderator chat for this site, and if more than one veteran user agrees that something should be changed, that's probably good enough.

Also please note that while re-tagging a post, other issues in the post should ideally get fixed at the same time, such as grammar/spelling, bad title etc. This in order to fix as many issues as possible while doing the intrusive edit "bumping" of the post. Please keep in mind that this site is fairly low traffic and therefore "bumping" is very intrusive.