now that the following has happened:
1.) i backed up all files but the mathcad worksheets for TLs
2.) i no longer have mathcad (unless they have a free linux equivilent)
3.) the mathcad models cost an amount much higher then i want to spend for a small weekend project.
how can i design a TL?
it would be nice if the $25 cost was for a usable product with no other commercial dependencies. but $100+ for matchcad (or the slow/annoying retyping of your information for the free version) and $25 for the previously free design sheets. and it probably won't run on linux. not something i can afford/use.
1.) i backed up all files but the mathcad worksheets for TLs
2.) i no longer have mathcad (unless they have a free linux equivilent)
3.) the mathcad models cost an amount much higher then i want to spend for a small weekend project.
how can i design a TL?
it would be nice if the $25 cost was for a usable product with no other commercial dependencies. but $100+ for matchcad (or the slow/annoying retyping of your information for the free version) and $25 for the previously free design sheets. and it probably won't run on linux. not something i can afford/use.
The only thing that I have found is DosBox located here Download Site
Scroll down to DosBox and click on it to download. It is MSDOS based but runs fine in a DOS window on Win98. As long as you change the speed of sound number to a proper value and don't try to simulate a stuffed line (i.e. set stuffing density to "0") then it seems to agree fairly well with Martin's worksheet.
I thought about getting the mathcad sheet but I downloaded the free mathcad and the demo sheet and the results were a bunch of colored smears in the window so it apparently doesn't work on my machine.
mike
Scroll down to DosBox and click on it to download. It is MSDOS based but runs fine in a DOS window on Win98. As long as you change the speed of sound number to a proper value and don't try to simulate a stuffed line (i.e. set stuffing density to "0") then it seems to agree fairly well with Martin's worksheet.
I thought about getting the mathcad sheet but I downloaded the free mathcad and the demo sheet and the results were a bunch of colored smears in the window so it apparently doesn't work on my machine.
mike
You could just use the design tables on Martin's website. No software required.
http://www.quarter-wave.com/
http://www.quarter-wave.com/
hmm, i had missed those. i might just try some of those equations out. maybe see if i can use the equations with some of the HFSS software we've got at the university. i'm not too confident though.
i've wondered why no TL boxes use tuning stubs, i might do some tests on this.
i've wondered why no TL boxes use tuning stubs, i might do some tests on this.
- Status
- This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button.