LT Spice arcs

[John Larkin]

If I select edit/draw/arc, it usually draws a circle! Or a lopsided arc. Is
there a trick for drawing controllable arcs?




--

John Larkin Highland Technology Inc
www.highlandtechnology.com jlarkin at highlandtechnology dot com

Precision electronic instrumentation

[Habib Bouaziz-Viallet]

Le 19/06/2014 17:51, John Larkin a �crit :

>
>
> If I select edit/draw/arc, it usually draws a circle! Or a lopsided arc. Is
> there a trick for drawing controllable arcs?
>
>
>
>

Just do Edit-Draw-Arc

LTSpice designs a plain circle (or an ovoide) on the screen

and then click inside this fresh circle to implement a an arc.

That's how it works on my GNU/Debian station, may be different
behaviour on MS-Win machines.

Habib.

[Joerg]

Yep, that's how it also works in windows. John, when it starts doing the
circle click on it aagin while the cursor is on the circle, then you can
do the two end points. The radius has to be set before when you place
the elipse (which vanishes after the 2nd click).

But arcs are not a desired thing in electronics ...

--
Regards, Joerg

http://www.analogconsultants.com/

[John Larkin]

On Thu, 19 Jun 2014 13:04:59 -0700, Joerg <inv...@invalid.invalid>
wrote:

I wanted to draw some nice gaussian looking pulses on my schematic
here and there. I finally got it to work by clicking a lot, but I
don't think I really get it. I suppose I should have just used a
zillion line segments.

The HELP says, basically

ARC : use the ARC tool to draw an arc.


--

John Larkin Highland Technology, Inc

jlarkin att highlandtechnology dott com
http://www.highlandtechnology.com

[Joerg]

John Larkin wrote:
> On Thu, 19 Jun 2014 13:04:59 -0700, Joerg <inv...@invalid.invalid>
> wrote:
>
>> Habib Bouaziz-Viallet wrote:
>>> Le 19/06/2014 17:51, John Larkin a �crit :
>>>>
>>>> If I select edit/draw/arc, it usually draws a circle! Or a lopsided
>>>> arc. Is
>>>> there a trick for drawing controllable arcs?
>>>>
>>>>
>>>>
>>>>
>>> Just do Edit-Draw-Arc
>>>
>>> LTSpice designs a plain circle (or an ovoide) on the screen
>>>
>>> and then click inside this fresh circle to implement a an arc.
>>>
>>> That's how it works on my GNU/Debian station, may be different
>>> behaviour on MS-Win machines.
>>>
>> Yep, that's how it also works in windows. John, when it starts doing the
>> circle click on it aagin while the cursor is on the circle, then you can
>> do the two end points. The radius has to be set before when you place
>> the elipse (which vanishes after the 2nd click).
>>
>> But arcs are not a desired thing in electronics ...
>
> I wanted to draw some nice gaussian looking pulses on my schematic
> here and there. I finally got it to work by clicking a lot, but I
> don't think I really get it. I suppose I should have just used a
> zillion line segments.
>

For educational purposes it would be nice to be able to import graphics
snippets into LTSpice. But I believe that's where the limits are and
LTSpice can probably not do that (yet).

> The HELP says, basically
>
> ARC : use the ARC tool to draw an arc.
>

:-)

[Jim Thompson]

On Fri, 20 Jun 2014 07:29:09 -0700, Joerg <inv...@invalid.invalid>
wrote:

[snip]

>>
>
>For educational purposes it would be nice to be able to import graphics
>snippets into LTSpice. But I believe that's where the limits are and
>LTSpice can probably not do that (yet).
>

[snip]

PSpice can do that: Draw, Insert Picture, bmp/dib/wmf/emf

I use it mostly to make custom title blocks using my customers'
company logos. They like that ;-)

...Jim Thompson
--
| James E.Thompson | mens |
| Analog Innovations | et |
| Analog/Mixed-Signal ASIC's and Discrete Systems | manus |
| San Tan Valley, AZ 85142 Skype: skypeanalog | |
| Voice:(480)460-2350 Fax: Available upon request | Brass Rat |
| E-mail Icon at http://www.analog-innovations.com | 1962 |

I love to cook with wine. Sometimes I even put it in the food.

[John Larkin]

On Fri, 20 Jun 2014 07:29:09 -0700, Joerg <inv...@invalid.invalid>
wrote:

PADS can put OLE objects onto a schematic. We had one schematic that
included six (tasteful) pictures of the layout guy's girlfriend. We
have no idea how that happened.

[Joerg]

Eagle can import graphics as well. It is so powerful in graphing and
assembly that people have used it do design birthday banners and wedding
cakes.


> ... We had one schematic that

> included six (tasteful) pictures of the layout guy's girlfriend. We
> have no idea how that happened.
>

And then all the boys stood around the Gerber viewer all drooling :-)

[k...@attt.bizz]

So can OrCad Capture but they increase the size of the files and slow
Crapture to a crawl. I tried documenting filter response curves with
simulator outputs but they slowed everything down too much so started
drawing stick figures instead.

[Maynard A. Philbrook Jr.]

In article <co17q9lhfcu0g0l14...@4ax.com>,
jla...@highlandtechnology.com says...

> >circle click on it aagin while the cursor is on the circle, then you can
> >do the two end points. The radius has to be set before when you place
> >the elipse (which vanishes after the 2nd click).
> >
> >But arcs are not a desired thing in electronics ...
>
> I wanted to draw some nice gaussian looking pulses on my schematic
> here and there. I finally got it to work by clicking a lot, but I
> don't think I really get it. I suppose I should have just used a
> zillion line segments.
>
> The HELP says, basically
>
> ARC : use the ARC tool to draw an arc.
>
>

A Polyline function would be nice )

Jamie

[Joerg]

At first glance I subconsciously read "Pauline function" :-)

http://www.mariowiki.com/Pauline

[John Larkin]

PADS had a "pull arc" function. Click on any line segment and bend it as much as
you like in either direction.

The LT Spice drawing functions are primitive, but the price is right.

[Maynard A. Philbrook Jr.]

In article <c0lj7l...@mid.individual.net>, inv...@invalid.invalid
says...

You get into some strange stuff! :)

Jamie