Transmission Line Modelling Software

[PB2]

I'm comparing to a posted design done in MJKs worksheets and it seems that he
does not include the effect of Le which allows us to see the passband better.
Or perhaps he has a check box for it - I don't remember.
It is simple enough to zero Le, but then the driver parameters are not right.
Some software has a check box to include the effect or not. It is also nice
to note it on the response graph, Le effect included or not.

Thanks for the changes you've made and making this available!

[schmeet]

Originally Posted by Keriwena

Just tried version 2.5.1 and compared it to Augspurger's TLwrx. The results were very, very close, likely within expected differences of scaling and rounding off.

Quibbles:
The scale of some of the parameter inputs is odd. MilliHenries is more common, as is liters for Vas.

First of all, thanks for testing. Good to know it is quite close.
As for the 'scale'. Simple really. I'm an engineer and I always use SI units. It avoids mistakes and confusion. I could make a function to switch between units but that will be far down on my list...

Originally Posted by Keriwena

The 'always on top' behavior of the auxiliary windows is annoying.

Yes I agree, I'll change that.

Originally Posted by Keriwena

The default amp power should probably be one watt. (since I used a rather efficient speaker to test, with 200 watts the system output was literally 'off the chart'! )

Again, I agree and its a quick change.

Originally Posted by Keriwena

Still, as I say, "quibbles", and you've created an easy to use program with some clever options and abilities that TLwrx lacks. Bravo!

Thanks!

[schmeet]

Also,

There is no 'new project'. You can just save as and then start a new design. A 'new project' would just reload the default, which is really easy to do, I'll add it.

Undo the last 'update' is possible, I'll give it a shot.

re the stuffing model, I'll explain how it works later but I'm really struggling with that. It seems to be OK at low freq but not at high. I think I need to do it emperically.

A comparison option is possible and I agree would be very useful I'll give it a shot..

Thanks for comments and suggestions guys, keep em coming!

[PB2]

Very minor bug unless I'm missing something is that Save under the Driver dialog box, prompts for a file name, shouldn't it just save the current driver. Seems to be the same as "Save As". The project Save seems to work fine.

[schmeet]

Pete, at the moment it works like this:

If you have selected (highlighted) one of the driver library files then click Save, it will save over the file. If you click Save As it will save it to a new file. However if you don't have a file selected then it will just default to Save As.

So it doesn't actually remember what file you actually used it just loads up the driver information.

I think I can make this a bit simpler and more intuitive though...

[Silent Screamer]

Something like this may be of some use...
Not the exact syntax (cut and paste from some of my code) but could be used for save / save as.

Private mySets AsNewMySettings

PublicFunction Find_Access_Database() AsBoolean
IfNot System.IO.File.Exists(mySets.accdbPath) Then
Dim ofDlog AsNewOpenFileDialog()
ofDlog.Filter = "Access Database Files|*.accdb"
If (ofDlog.ShowDialog() = Windows.Forms.DialogResult.OK) Then
mySets.accdbPath = ofDlog.FileName.ToString
mySets.Save()
Else
MsgBox(" A required database file has not been selected." & vbNewLine & _
" Without it the program can not continue to load." & vbNewLine & _
" The program will now close.", vbCritical, "Missing Database")
ReturnFalse
EndIf
EndIf
ReturnTrue
EndFunction

[schmeet]

Latest update has just been uploaded.

- Added New Project option to File Menu.
- Removed 'Always OnTop' function from windows
- Changed default amplifier power to 1 watt.

[schmeet]

Silent Screamer, Thanks, but I already have a working function for Save/Save As that I made for the project save and save as options. I just need to implement it better for the Driver Library.

[Silent Screamer]

Did the update to 2.6 and I notice when you click on "Save Project" the "Save As" dialog box opens... I realise that it is probably just a cut and paste as a place holder, but just wondering why any dialog box would open instead of just saving.

If you have used the "Open Project" button the file path is known (file path stored or captured after clicking OK button of the "Open dialog box), if you start a new project using the "New Project" button the Save Project option should be greyed out until such time as the Save As option has been used, and then it would be enabled.

If (ofDlog.ShowDialog() = Windows.Forms.DialogResult.OK) Then
mySets.accdbPath = ofDlog.FileName.ToString
mySets.Save()

Ideally you would start with no project loaded and both the Save and Save As options greyed out...

[schmeet]

Originally Posted by Silent Screamer

Did the update to 2.6 and I notice when you click on "Save Project" the "Save As" dialog box opens... I realise that it is probably just a cut and paste as a place holder, but just wondering why any dialog box would open instead of just saving.

If you open the program from scratch and then click save then it will open the Save As dialog because you are not yet working from a file. If you have opened a file and click Save then it will just save to that file.

Originally Posted by Silent Screamer

if you start a new project using the "New Project" button the Save Project option should be greyed out until such time as the Save As option has been used, and then it would be enabled.

This is not normal practice. In almost all applications, if you start a new document, the 'Save' option is not greyed out but will just act as a 'Save As' button.

Originally Posted by Silent Screamer

If (ofDlog.ShowDialog() = Windows.Forms.DialogResult.OK) Then
mySets.accdbPath = ofDlog.FileName.ToString
mySets.Save()

Thanks. I know how to use Dialog boxes... :P

Originally Posted by Silent Screamer

Ideally you would start with no project loaded and both the Save and Save As options greyed out...

You start with the default project loaded. I don't see an advantage to having nothing loaded, it just means there will be loads of Null errors that need dealing with until the user has entered something into every box.

Again. No application ever has Save or Save As greyed out when you open a new project.