Smith Chart Tutorial

My local TAP Plastics has clear vinyl sheet in a number of thicknesses... 5, 10, and 20 mils, I think. Would that do? It's flexible enough to roll up. The heavier grades would be suitable for (e.g.) replacing the rear windows in a convertable soft-top.

I used some of this stuff (10 mil, I think) to make a custom dust-cover for a turntable - it worked out very nicely.

--
Dave Platt                                    AE6EO
Friends of Jade Warrior home page:  http://www.radagast.org/jade-warrior
  I do _not_ wish to receive unsolicited commercial email, and I will
     boycott any company which has the gall to send me such ads!

Be glad you weren't entering Mexico or Singapore.

It will be a good day when our President pulls his head out his ass and has "security" people stop looking at THINGS

*-*-gap-between-perceived-risk-and-actual-risk+c+*-*-*-coined-b=y-Bruce-Schneier+superstition+gnu+gains-*+Beyond.Fear+*-little-real-influen= ce-on-security and start looking at PEOPLE. *-*.s-the-safest-airport+*-*-h=as-it-right.*-*-*-*-*-*-*-*-*+drive.through.too.quickly+anything-*-does-not=-fit+are.profilers+was-in-*-*-army.*-*-intelligence+profiling+ask-*-a-few-q=uestions+*-fiance.*-*-*+watch.you

Yep. It's a shame that you and that group of PSpice support people couldn't have been retained by Cadence. But it's pretty clear that Cadence doesn't want an economic competitor for chip design when they can charge 10X for user-unfriendly crap.

...Jim Thompson

--
| James E.Thompson, P.E.                           |    mens     |
| Analog Innovations, Inc.                         |     et      |
| Analog/Mixed-Signal ASIC\'s and Discrete Systems  |    manus    |
| Phoenix, Arizona  85048    Skype: Contacts Only  |             |
| 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

How about a piece of cork sheet?

Cheers! Rich

Next time you buy a new shirt, save the piece of cardboard. Trim to size as needed. ;-)

Cheers! Rich

Or move across the border. ;-)

Cheers! Rich

Thanks, Dave. 20mils will do it. Unfortunately their closest store is in Auburn, quite a drive. But I can probably visit one on the way to a client or during some other trip. In case others run into this, here is the web site, has a store finder in the upper right:

--
Regards, Joerg

http://www.analogconsultants.com/

"gmail" domain blocked because of excessive spam.
Use another domain or send PM.

Yeah, they kept me till the last. I kept wondering what I was doing wrong... 8-)

Charlie

The plastic materials for convertable rear windows i have had experience with, will roll to about 4 inch (100 mm) diameter.

Any more of these budget shenanigans and I might just do that. "The 50% extra entitlement will be revenue neutral" and bla, bla, bla. Amazing, some fools actually believed that!

--
Regards, Joerg

http://www.analogconsultants.com/

"gmail" domain blocked because of excessive spam.
Use another domain or send PM.

There's always Arizona ;-)

Don't spend that extra $8/week all in one place ;-0

...Jim Thompson

--
| James E.Thompson, P.E.                           |    mens     |
| Analog Innovations, Inc.                         |     et      |
| Analog/Mixed-Signal ASIC\'s and Discrete Systems  |    manus    |
| Phoenix, Arizona  85048    Skype: Contacts Only  |             |
| 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

zoning

Or use it to buy one of these 2012 Pelosi GTxi SS/RT Sport Editions from Congressional Motors:

Cheers, James Arthur

try a place that sells plastic, I've seen 1200mm wide rolls of polycarbonate sheeting which seems to be what you want.

We buy cut sheet plastic from GE Polymershapes. The sheets are something like 2' x 3' or maybe 2' x 4'.

Best regards, Spehro Pefhany

--
"it\'s the network..."                          "The Journey is the reward"
speff@interlog.com             Info for manufacturers: http://www.trexon.com
Embedded software/hardware/analog  Info for designers:  http://www.speff.com

I have completed the remainder of the Smith Chart tutorial. I have added a program that shows how to use a transmission line stub as part of the matching circuitry in place of a capacitor or inductor.

Link is here:

Brent

Have you seen this:

"This graphics-intensive program is a valuable transmission-line calculator for both advanced and beginning users. Based on the venerable and highly intuitive Smith chart, it provides high-accuracy computations without recourse to paper, compass or straightedge."

Might be useful for learning with your tutorial!

I still have a slide rule version of the "Radio Transmission Line Calculator" compliments of FXR Inc. As a clue as to how old it is, the phone number in New York is RAvenswood 1-9000. :-)

PEnnsylvania 6-5000, anyone!

--
Virg Wall, P.E., K6EVE