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Re: High-power Infrared LED model desired

 

--- In LTspice@..., "nedkonz" <ned@...> wrote:

Hi folks,

I'm trying to model an infrared remote control transmitter circuit that I'm designing and haven't had much luck finding a SPICE model for the higher-power IR LEDs like I'm using.

In this case, I have the OSRAM SFH4248 940nM emitter, and their site doesn't have any models for their IR LEDs.



I've also looked in the files area here without any luck.

Could anyone point me to a model for this diode?

Thanks!

Hello,

The model for the OSRAM SFH4248 is in the file
OSRAM-IR-POWERTOPLED.lib




.MODEL SFH4248 D
+ IS= 1.50099E-15
+ N= 1.570213683
+ RS= 0.762136823
+ IKF= 392.8188163
+ IBV = 0.00000001
+ NBV = 1
+ IBVL = 0.000000001
+ NBVL = 180
+ BV = 24
+ CJO = 1.46E-11
+ VJ = 0.56
+ M = 0.055
+ FC = 0.4
+ TT = 0.000000008
+ EG = 1.3


Best regards,
Helmut
High-power Infrared LED model desired

 

Hi folks,

I'm trying to model an infrared remote control transmitter circuit that I'm designing and haven't had much luck finding a SPICE model for the higher-power IR LEDs like I'm using.

In this case, I have the OSRAM SFH4248 940nM emitter, and their site doesn't have any models for their IR LEDs.



I've also looked in the files area here without any luck.

Could anyone point me to a model for this diode?

Thanks!
Re: All_Files.Htm

John Woodgate
 

In message <759B589F6950452C8C99FA8446748D7E@Maison3>, dated Sun, 14 Apr 2013, basier. philippe <basier.philippe@...> writes:

But you wrote that you have had the same problem
Yes, I did have the problem a few weeks ago, and at that time, I think, everyone (more or less) did. The problem went away after a week or two, with no explanation, as far as I know.
--
OOO - Own Opinions Only. See www.jmwa.demon.co.uk
They took me to a specialist burns unit - and made me learn 'To a haggis'.

John Woodgate, J M Woodgate and Associates, Rayleigh, Essex UK
Re: All_Files.Htm

 

Hello Philippe,

I am using at the moment a PC with XP. I can directly open
all_files.htm without saving it. I checked with Firefox,
IE and Chrome. All three worked as expected.

Best regards,
Helmut

--- In LTspice@..., "basier.philippe" <basier.philippe@...> wrote:

Dear Helmut,
I can only dowload it and open the dowloaded file. I did it .
I can't open it from my browser (IE).
Regards,
Philippe
----- Original Message -----
From: Helmut
To: LTspice@...
Sent: Sunday, April 14, 2013 8:21 PM
Subject: [LTspice] Re: All_Files.Htm





--- In LTspice@..., "Basier philippe" <basier.philippe@> wrote:
>
> Hello
> How to open all_files.htm ?
> Regards
> Philippe
>

Hello Philippe,

You should open it with any Internet browser.

IE, Firefox, Chrome, Opera, ...

Normally it's automatically opened by your standard browser
when you click on it.

Files > Tables of Contents > all_files.htm

Best regards,
Helmut





[Non-text portions of this message have been removed]
Re: All_Files.Htm

John Woodgate
 

In message <913832DA74584FFFB1B82295C5FF0858@Maison3>, dated Sun, 14 Apr 2013, basier. philippe <basier.philippe@...> writes:

I can only dowload it and open the dowloaded file. I did it .
I can't open it from my browser (IE).
It should: it does on my computer. Which version of IE do you have? I have IE8 on this computer. Do you have McAfee anti-virus? I don't.
--
OOO - Own Opinions Only. See www.jmwa.demon.co.uk
Things to do today: Cut a hole in reality and push a turnip through it.
John Woodgate, J M Woodgate and Associates, Rayleigh, Essex UK
Re: Bridge current sensor INA193 or AD8210 available?

 

--- In LTspice@..., "Helmut" <helmutsennewald@...> wrote:



--- In LTspice@..., "mario.haselsteiner" <mario.haselsteiner@> wrote:

Hello,

is there anywhere a model for a bridge current sensor available for downloading?

Thanks
Mario

Hello Mario,

There is an example with the AD8210 in the Files section.

Files > Lib > AD8210_test.zip


Best regards,
Helmut

Hello Mario,

I just made the missing INA193 example.

Files > Lib > INA193_test.zip


It's best practice to copy the model file and the symbol
file into the folders where you have the schematics.

Best regards,
Helmut
Re: All_Files.Htm

 

But you wrote that you have had the same problem
Philippe

----- Original Message -----
From: John Woodgate
To: LTspice@...
Sent: Sunday, April 14, 2013 8:50 PM
Subject: Re: [LTspice] Re: All_Files.Htm



In message <kket93+h2gb@...>, dated Sun, 14 Apr 2013, sawreyrw
<sawreyrw@...> writes:

>
>It doesn't work for me either. You need to download it to your C
>drive, and then you will be able to open it with your browser.

This suggests (not very strongly though) that a browser or anti-virus
security setting is stopping it being opened directly. The other
explanation is, of course, the Principle of Universal Perversity.
--
OOO - Own Opinions Only. See www.jmwa.demon.co.uk
They took me to a specialist burns unit - and made me learn 'To a haggis'.

John Woodgate, J M Woodgate and Associates, Rayleigh, Essex UK
Re: All_Files.Htm

 

Rick,
Yes ,
I did it. But it's not handy think about updates oh all_files.
I don't use my drve C: for dowloading ot installations. Even LTspice IV !
Thanks
Philippe

----- Original Message -----
From: sawreyrw
To: LTspice@...
Sent: Sunday, April 14, 2013 8:41 PM
Subject: [LTspice] Re: All_Files.Htm





--- In LTspice@..., "Basier philippe" <basier.philippe@...> wrote:
>
> Hello
> How to open all_files.htm ?
> Regards
> Philippe
>

Philippe,

It doesn't work for me either. You need to download it to your C drive, and then you will be able to open it with your browser.

Rick
Re: All_Files.Htm

John Woodgate
 

In message <kket93+h2gb@...>, dated Sun, 14 Apr 2013, sawreyrw <sawreyrw@...> writes:


It doesn't work for me either. You need to download it to your C drive, and then you will be able to open it with your browser.
This suggests (not very strongly though) that a browser or anti-virus security setting is stopping it being opened directly. The other explanation is, of course, the Principle of Universal Perversity.
--
OOO - Own Opinions Only. See www.jmwa.demon.co.uk
They took me to a specialist burns unit - and made me learn 'To a haggis'.

John Woodgate, J M Woodgate and Associates, Rayleigh, Essex UK
Re: All_Files.Htm

 

Dear Helmut,
I can only dowload it and open the dowloaded file. I did it .
I can't open it from my browser (IE).
Regards,
Philippe

----- Original Message -----
From: Helmut
To: LTspice@...
Sent: Sunday, April 14, 2013 8:21 PM
Subject: [LTspice] Re: All_Files.Htm





--- In LTspice@..., "Basier philippe" <basier.philippe@...> wrote:
>
> Hello
> How to open all_files.htm ?
> Regards
> Philippe
>

Hello Philippe,

You should open it with any Internet browser.

IE, Firefox, Chrome, Opera, ...

Normally it's automatically opened by your standard browser
when you click on it.

Files > Tables of Contents > all_files.htm

Best regards,
Helmut
Re: All_Files.Htm

 

--- In LTspice@..., "Basier philippe" <basier.philippe@...> wrote:

Hello
How to open all_files.htm ?
Regards
Philippe
Philippe,

It doesn't work for me either. You need to download it to your C drive, and then you will be able to open it with your browser.

Rick
Re: All_Files.Htm

 

Hello John,
I can only dowload it and open the dowloaded file. I did it .
I can't open it from my browser (IE).
Regards

----- Original Message -----
From: John Woodgate
To: LTspice@...
Sent: Sunday, April 14, 2013 8:18 PM
Subject: Re: [LTspice] All_Files.Htm



In message <kker0j+82e6@...>, dated Sun, 14 Apr 2013, Basier
philippe <basier.philippe@...> writes:

>How to open all_files.htm ?

Has it gone wrong again? It should open in any browser.

I just tried it and it opens OK. But it is a very large HTML file, so it
may take time to download, or be corrupted during download.
--
OOO - Own Opinions Only. See www.jmwa.demon.co.uk
They took me to a specialist burns unit - and made me learn 'To a haggis'.

John Woodgate, J M Woodgate and Associates, Rayleigh, Essex UK
Re: Bridge current sensor INA193 or AD8210 available?

 

--- In LTspice@..., "mario.haselsteiner" <mario.haselsteiner@...> wrote:

Hello,

is there anywhere a model for a bridge current sensor available for downloading?

Thanks
Mario

Hello Mario,

There is an example with the AD8210 in the Files section.

Files > Lib > AD8210_test.zip


Best regards,
Helmut
Re: All_Files.Htm

 

--- In LTspice@..., "Basier philippe" <basier.philippe@...> wrote:

Hello
How to open all_files.htm ?
Regards
Philippe

Hello Philippe,

You should open it with any Internet browser.

IE, Firefox, Chrome, Opera, ...

Normally it's automatically opened by your standard browser
when you click on it.

Files > Tables of Contents > all_files.htm

Best regards,
Helmut
Re: All_Files.Htm

John Woodgate
 

In message <kker0j+82e6@...>, dated Sun, 14 Apr 2013, Basier philippe <basier.philippe@...> writes:

How to open all_files.htm ?
Has it gone wrong again? It should open in any browser.

I just tried it and it opens OK. But it is a very large HTML file, so it may take time to download, or be corrupted during download.
--
OOO - Own Opinions Only. See www.jmwa.demon.co.uk
They took me to a specialist burns unit - and made me learn 'To a haggis'.

John Woodgate, J M Woodgate and Associates, Rayleigh, Essex UK
All_Files.Htm

 

Hello
How to open all_files.htm ?
Regards
Philippe
CD 4566 / Programmnable Timer / Texas Instruments

[email protected]
 

Hello,

I need for LT Spice the simulation model of the CD 4566.
Is the model avaiable anywhere?

Best regards,

Arnd
I need 74ls193 for LTSpice

 

I need 74ls193 for LTSpice
Re: inverting opamp simulation: rapid component variation

 

Hello,

You can only use .STEP to change the values of components in
the .AC simulation.

Best regards,
Helmut

--- In LTspice@..., "MOHAMMAD A MAKTOOMI" <amaktoomamu@...> wrote:


Thank you, Andy for your hints.
But, in '.AC' we need to have an AC voltage or current source. Here, I don't have any such thing (as I wish to vary the frequency of R2, NOT that of any source), so how do I proceed?

--- In LTspice@..., Andy <Andrew.Ingraham@> wrote:

MOHAMMAD A MAKTOOMI <amaktoomamu@> wrote:

...
Note: In your circuit, you may need to decrease the maximum timestep
down to about 10ns. (.tran 0 0.1m 0 10n) The output waveform is
highly distorted at the highest frequency and LTspice was missing the
narrow peak before doing that, making the amplitude look a lot less.

It probably also means the result is unrealistic at that frequency,
but that's another matter.

Andy
Re: Photo Transistor

 

--- In LTspice@..., "mase723777" <mimmo_renato@...> wrote:

Dear all,

I am new to LTspice and electricity(my dad is my teacher), I was looking on google how to add a photo transistor. The only useful thing I found was to add a Photo coupler. I tried this in a circuit with a n-Channel mosfet and it was successful. But when I want to change the parameters of the Photo coupler it gives me a notification it is not possible. How can I override this?

Many thx. for your feedback,

Kr,

Renato
Hello Renato,

Nearly all symbols in the LTspice library are intentionally
made as specific symbols. This prevents that users corrupt
their database.

One can modify this symbol to allow to change the parameter
Igain for example.

I have made a new symbol PC817.asy for you. Please try my example.

Files > Temp > PhotoTransWithMOSFET.zip

Its best practice to copy this symbol into every folder where
you have a schematic using this new symbol.

Best regards,
Helmut
95561 - 95580 of 157776