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I'll venture the opinion that tags should convey relevant information and function to separate questions based on relevant expertise. (The latter is the "I am an expert in tag-name" test from Elsew...
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#2: Post edited
by
Canina
·
2021-12-03T17:59:38Z (almost 3 years ago)
I'll venture the opinion that tags should convey *relevant* information and function to separate questions based on relevant expertise. (The latter is the "I am an expert in tag-name" test from Elsewhere. If that sounds like something no reasonable subject matter expert would say, then it probably is not good as a tag. "I am an expert in MOSFETs" sounds like something someone might say; "I am an expert in UHF-circuit-design", sure; "I am an expert in frequency", perhaps not so much.)- Whether a circuit is designed for 3.3 volts or 400 volts is a relevant distinction to make.
Whether it's designed for 3.3 volts or 5 volts, or for 380 volts or 400 volts, is not as relevant as a distinction.- Someone qualified to answer questions about low-voltage (say, 3.3 volts) circuits might not be qualified to answer questions about high-voltage (say, 2000 volts) circuits. On the flip side, someone looking for answers pertaining to high-voltage circuits might not be helped by answers about low-voltage circuits.
- I can see *some* value in separating DC and AC designs, since there are some aspects that need considering in one that doesn't need as much (or any at all) consideration in the other.
- **I therefore propose adopting the IEC 61140 voltage ranges:**
- * Extra low voltage: <50 V rms (AC) or <120 V (DC)
- * Low voltage: higher than extra low voltage, but ≤1000 V rms (AC) or ≤1500 V (DC)
- * High voltage: >1000 V rms (AC) or >1500 V (DC)
- **as well as separating AC and DC.**
- This would give six tags, which could be named:
- * extra-low-voltage-ac, extra-low-voltage-dc
- * low-voltage-ac, low-voltage-dc
- * high-voltage-ac, high-voltage-dc
- Naming them thus also has the advantage that searching for "volt" or "voltage" will find all of them. The brief tag excerpt probably should mention the voltage range for each in some kind of harmonized format, to allow telling them apart easily in the tag list.
- Questions that deal with both AC and DC, or multiple voltages, might need more than one of those tags. For example, a question about PC power supply design might be tagged *low-voltage-ac extra-low-voltage-ac extra-low-voltage-dc* to cover all of the voltages involved (to the extent that all of them are actually *relevant* to the question, of course).
Negative voltages do *not* need special tags, since that's just a matter of which reference is used. If it is important for the specific question, that distinction can be made within the question itself.
- I'll venture the opinion that tags should convey *relevant* information and function to separate questions based on relevant expertise. (The latter is the "I am an expert in tag-name" test from Elsewhere. If that sounds like something no reasonable subject matter expert would say, then it probably is not good as a tag. "I am an expert in MOSFETs" sounds like something someone might legitimately say; "I am an expert in UHF-circuit-design", sure; "I am an expert in frequency", perhaps not so much.)
- Whether a circuit is designed for 3.3 volts or 400 volts is a relevant distinction to make.
- Whether it's designed for 3.3 volts or 5 volts, or for 380 volts or 400 volts, is not as relevant as a distinction for the purpose of question categorization.
- Someone qualified to answer questions about low-voltage (say, 3.3 volts) circuits might not be qualified to answer questions about high-voltage (say, 2000 volts) circuits. On the flip side, someone looking for answers pertaining to high-voltage circuits might not be helped by answers about low-voltage circuits.
- I can see *some* value in separating DC and AC designs, since there are some aspects that need considering in one that doesn't need as much (or any at all) consideration in the other.
- I also see significant value in falling back on some kind of internationally recognized standard, rather than coming up with a set of voltage ranges that only applies on Electrical Engineering Codidact.
- **I therefore propose adopting the IEC 61140 voltage ranges:**
- * Extra low voltage: <50 V rms (AC) or <120 V (DC)
- * Low voltage: higher than extra low voltage, but ≤1000 V rms (AC) or ≤1500 V (DC)
- * High voltage: >1000 V rms (AC) or >1500 V (DC)
- **as well as separating AC and DC.**
- This would give six tags, which could be named:
- * extra-low-voltage-ac, extra-low-voltage-dc
- * low-voltage-ac, low-voltage-dc
- * high-voltage-ac, high-voltage-dc
- Naming them thus also has the advantage that searching for "volt" or "voltage" will find all of them. The brief tag excerpt probably should mention the voltage range for each in some kind of harmonized format, to allow telling them apart easily in the tag list.
- Questions that deal with both AC and DC, or multiple voltages, might need more than one of those tags. For example, a question about PC power supply design might be tagged *low-voltage-ac extra-low-voltage-ac extra-low-voltage-dc* to cover all of the voltages involved (to the extent that all of them are actually *relevant* to the question, of course).
- Negative voltages do *not* need special tags, since that's just a matter of which reference is used. If the fact that the specific choice of reference level results in a negative value is important for the specific question, that distinction can be made within the question itself.
#1: Initial revision
by
Canina
·
2021-12-03T16:00:47Z (almost 3 years ago)
I'll venture the opinion that tags should convey *relevant* information and function to separate questions based on relevant expertise. (The latter is the "I am an expert in tag-name" test from Elsewhere. If that sounds like something no reasonable subject matter expert would say, then it probably is not good as a tag. "I am an expert in MOSFETs" sounds like something someone might say; "I am an expert in UHF-circuit-design", sure; "I am an expert in frequency", perhaps not so much.) Whether a circuit is designed for 3.3 volts or 400 volts is a relevant distinction to make. Whether it's designed for 3.3 volts or 5 volts, or for 380 volts or 400 volts, is not as relevant as a distinction. Someone qualified to answer questions about low-voltage (say, 3.3 volts) circuits might not be qualified to answer questions about high-voltage (say, 2000 volts) circuits. On the flip side, someone looking for answers pertaining to high-voltage circuits might not be helped by answers about low-voltage circuits. I can see *some* value in separating DC and AC designs, since there are some aspects that need considering in one that doesn't need as much (or any at all) consideration in the other. **I therefore propose adopting the IEC 61140 voltage ranges:** * Extra low voltage: <50 V rms (AC) or <120 V (DC) * Low voltage: higher than extra low voltage, but ≤1000 V rms (AC) or ≤1500 V (DC) * High voltage: >1000 V rms (AC) or >1500 V (DC) **as well as separating AC and DC.** This would give six tags, which could be named: * extra-low-voltage-ac, extra-low-voltage-dc * low-voltage-ac, low-voltage-dc * high-voltage-ac, high-voltage-dc Naming them thus also has the advantage that searching for "volt" or "voltage" will find all of them. The brief tag excerpt probably should mention the voltage range for each in some kind of harmonized format, to allow telling them apart easily in the tag list. Questions that deal with both AC and DC, or multiple voltages, might need more than one of those tags. For example, a question about PC power supply design might be tagged *low-voltage-ac extra-low-voltage-ac extra-low-voltage-dc* to cover all of the voltages involved (to the extent that all of them are actually *relevant* to the question, of course). Negative voltages do *not* need special tags, since that's just a matter of which reference is used. If it is important for the specific question, that distinction can be made within the question itself.