[HN Gopher] Electropedia: The world's online electrotechnical vo...
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Electropedia: The world's online electrotechnical vocabulary
Author : gjvc
Score : 90 points
Date : 2022-03-30 10:39 UTC (12 hours ago)
(HTM) web link (www.electropedia.org)
(TXT) w3m dump (www.electropedia.org)
| rcMgD2BwE72F wrote:
| Could this be linked with Wikidata and, if need be,
| https://www.wikidata.org/wiki/Wikidata:Lexicographical_data
| mormegil wrote:
| There already is https://www.wikidata.org/wiki/Property:P8855
| loudmax wrote:
| This is Electropedia's definition for "geosynchronous satellite"
| at
| https://www.electropedia.org/iev/iev.nsf/display?openform&ie...:
| a synchronous satellite of the Earth Note - The sidereal
| period of rotation of the Earth is about 23 hours 56 minutes.
|
| They also have the same definition in other languages.
|
| It's not wrong, but compare it to the richness of Wikipedia's
| article on the same subject:
| https://en.wikipedia.org/wiki/Geosynchronous_satellite
|
| Maybe it's unfair because space and orbital mechanics are
| somewhat outside of Electropedia's stated focus on
| "electrotechnology". But their blurbs on electrical terms are
| still terse compared to Wikipedia.
|
| Also, Wikipedia's url itself is more informative than the
| "725-11-65" you get from Electropedia.
|
| Notably, Electropedia is _not_ a wiki, so there is more assurance
| that the information in it has been reviewed by an actual expert.
| It just seems kind of sparse.
| adhoc_slime wrote:
| My brain went right to search for 2 terms I want everyone to get
| correct.. still no definitive source to search for the meaning of
| VCC and VDD. I still see people get this wrong _all the time_.
| jonsen wrote:
| I think this WP article is rather illuminating:
|
| https://en.m.wikipedia.org/wiki/IC_power-supply_pin
| metaphor wrote:
| Precisely how do you define _definitive_ so that we might
| better understand what you assert to be _wrong_?
|
| My naive intuition suspects he knows, so here's a contrarian
| curveball pulled directly out of JEDEC JESD88 _Dictionary of
| Terms for Solid-State Technology_ [1] to consider (my
| emphasis):
|
| > drain power voltage (VDD): The primary power voltage on MOS
| devices that require a potential that differs from the normal
| system logic voltage. _The term VDD is used interchangeably
| with VCC on devices that use 5-V supplies._
|
| [1] https://www.jedec.org/standards-
| documents/dictionary/terms/d...
| myself248 wrote:
| Collector and Drain, I thought?
| dylan604 wrote:
| with a stutter? what are the repeated letters for,
| redundancy?
| myself248 wrote:
| The repeated letters are to say "not necessarily the
| collector of _this_ transistor (which may be, for instance,
| the bottom of a push-pull pair), but the collector of the
| most-collector-ward transistor".
|
| Explained here: https://en.wikipedia.org/wiki/IC_power-
| supply_pin
| hulitu wrote:
| That's because they get the meaning from the environment (i.e.
| datasheets, schematics). And writing a good datasheet is hard
| and the companies who did this are mostly gone ( Hello
| Motorola).
| alanbernstein wrote:
| I think this should have been named wikEEpedia.
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(page generated 2022-03-30 23:01 UTC)