Dear Oliver Lenz， Thank you very much for your patient responses. I now understand whether there are guiding standards. I would also like to inquire about question 1. Are there any publicly available datasets for circuit diagrams? Looking forward to your response.
Wish you a pleasant work! best wishes， xu zhao On Friday, November 24, 2023 at 4:15:37 PM UTC+8 White Fox wrote: > Hi guys > > I'm just reading only to get an insight of KiCAD development (but do not > use KiCAD, that is why I do so), but just my 2 cent for point two of the > question: > > There are two competiting circuit drawing standards, the ANSI standard > (see the one-line-zick-zack-resistor symbols) and the rest of the world > (draws a rectangle for the resistor symbol). But most companies draw > anything what looks kindly similar to the official symbol, the most > companies just ignore the official standard. > For example, there are some very old standard libraries for Altium, you > see very often. These library has a diode symbol with 90 degree angled > arrow triange, but the official symbol has a very smaller angle. > > I would say that only the big companies have these standards (the > standards are very expensive), or companies where the customers insists > of standard symbols, but I would be not surprised if the engineers even > in this companies draw what they think fits right, and differ from the > standards. I see this wrong diode symbol often in datasheets and > application notes. > Or let's take the example of the operational amplifier symbol. Earlier, > decades ago (and I guess in ANSI standard until today), the official > symbol for an opa was a triangle. The rest-of-the-world-standard (at > least the DIN standard which normally refers to e.g. ISO) has for opa a > rectangle symbol since >20 years, but I don't remember ever seeing it in > the wild. I also use the old-fashion triangle. > > Some years ago, I took the (expensive) standards and made some libraries > on my own. Theese standards, even though it is the latest version, are > very old, never updated since mostly twenty or thirty years, and often > surprisingly useless for modern electronical design. > > greetings > Oliver Lenz > > > Am 24.11.2023 um 08:26 schrieb Marco Ciampa: > > On Thu, Nov 23, 2023 at 05:51:54PM -0800, zhao xu wrote: > >> Hello everyone, I apologize for asking a question here that may not be > >> directly related to KiCAD development. > >> > >> 1. Could anyone please share an open-source dataset of circuit diagrams > >> (preferably drawn using KiCAD, but diagrams drawn with other tools are > also > >> acceptable)? > >> > >> 2. When drawing circuit diagrams, are there any international standards > or > >> industry standards that should be followed? > >> > >> I sincerely hope to receive responses from everyone. > >> > >> Best wishes for a pleasant work experience. > >> > > On the "Made with KiCad" page (https://www.kicad.org/made-with-kicad/) > > you can find many examples of kicad made project. Most of these project > > are open hardware so you can freely download the entire project and > > take example from them. > > > > But you are right, there should be at or least it would be nice to have > > an indication to the standards somewhere. Of course these are not > > mandatory and you are free to do whatever you want with KiCad. > > > > -- > > > > Amike, > > Marco Ciampa > > > > > -- > Das Nötige ist einfach und das Komplizierte unnötig > -Michail Kalaschnikow > > > As a german, please let me tell you: Germans are not rude. > If you invite a german to have lunch with you and he says simply 'No', be > assured that he means: > «I'm so glad that you ask me to spend lunch time with you, I'm sure it > would be a great time, > but unfortunately, I'm deeply sorry for that, I have a meeting with my > boss and a few minutes later, > I promised our most important customer a call. > And moreover, I'm a little embarassed for that, I feel a bit sick today, > maybe I'm not a good lunch companion today. > But I really hope so that we can share this great time another time.» > > The reason for this kind of highly efficient conversation, which is > typical for germans, is quite simple: > He knows that you are probably very busy with highly important business, > and it is a special kind of German courtesy not to want to waste your > precious time. > So please, don't misunderstand short and precise communication as > rowdyness. > > -- You received this message because you are subscribed to the Google Groups "KiCad Developers" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/a/kicad.org/d/msgid/devlist/bd7c01ca-ff03-4942-99b8-1c92929a655fn%40kicad.org.
