kicad-developers team mailing list archive

[Milan Horák <konference@...>]

Oops, sorry for empty post, see below

Vesa Solonen napsal(a):
> On Sat, 21 Feb 2009, Milan Horák wrote:
>
> > let's look on the specs, no offense:
>
> Hey, you've gotten to the official spec so that can't be offending in any
> way. I haven't gotten that far yet and also spotted crude error in my
> document. Factors need to be doubled...
>
> > Resistor symbol dimensions are defined in IEC-617-4 (EN 60617-4) width
> > is 2.5mm, which is approx. 1/10", which is 100 mils. IMO it is measured
> > from one line axe to another. The height is defined 7.5mm, which is
> > approx. 3/10", which is 300 mils. It is called an M like module.
> >
> > >-There must be at least one DU spacing between pins or any other
> > symbol >feature, like corner. Excluding symbols with width less than 
> 2*DU.
> >
> > Spacing between pins is defined also in IEC-617-4 (EN 60617-4) as 2*M so
> > it is 5mm, which is approx. 2/10", which is 200 mils.
>
> Pin spacing seems to be violated at leas in Geda and Eagle schematic
> editors (libraries). Is there any that really enforce that part? To my
> taste it's not dense enough, even though it may be clear to read. Too
> little stuff to see at first glance.

I think one M will be enough.

> > Plates defined as M/2 center to center, width 2*M, positive marked with
> > "+" one M wide, one M high, placed one M left and one M up from center.
>
> There is nothing said about thicnesses?

Maybe it is in part one of IEC 617, which I don't have.

> > Transistor is defined without circle (except transistor with one
> > electrode connected to the envelope - in this case circle diameter is 
> 4*M).
>
> Do you know if this applies only to metal can types or also to molded
> parts with heat sink tabs?

IMO it applies in both cases. I think that we should use circle in all 
cases.

> > Base beam is 2*M.
> >
> > That is said in IEC-617-5 (EN 60617-5).
> >
> > Milan
>
> I'll try to dig a copy from somewhere... My goal is to make print quality
> symbol set with dynamic styling support for line weights (I may loosen
> the demands if they seem too ambitious). Scans from warious sources are
> made available for ideas. Thank you for your work.

I can send you one. Got it somewhere from the net, but poor quality. 
25MB packed size.

Milan

> -Vesa