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So does LTSpice or some other graphical spice support Triacs Unijunctions PUTs Diac SCR

Where can I find simple models for these to use with LTSpice of some free graphical spice?

Yes, I need unijuction and triac and etc support.

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Reply to
OldGuy
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SCR and TRIAC are in the symbol (*.asy) libraries. The others may exist but I couldn't find them in a quick eyeball scan.

But you can draw your own symbols, and Spice models are easy enough to find by surfing the web. ...Jim Thompson

--
| James E.Thompson                                 |    mens     | 
| Analog Innovations                               |     et      | 
| Analog/Mixed-Signal ASIC's and Discrete Systems  |    manus    | 
| San Tan Valley, AZ 85142   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.
Reply to
Jim Thompson

By the way: there is a very well supported LTSpice-Group at yahoo! snipped-for-privacy@yahoogroups.com

peter

Reply to
PeterGierschner

Did you look through the 100+MB of Alex Bordodynov's models?

I only could download one set, not the larger set, so couldn't peruse.

Reply to
RobertMacy

I've seen that name on the LTspice list. Do you have a link to his site?

As for models, I have 6.88 GB (227,943 files) of models, about 80% foundry device-level stuff, the rest discrete components and manufacturer's chip models ;-)

Unijunction transistors are in low usage. I don't know of a good model. ...Jim Thompson

--
| James E.Thompson                                 |    mens     | 
| Analog Innovations                               |     et      | 
| Analog/Mixed-Signal ASIC's and Discrete Systems  |    manus    | 
| San Tan Valley, AZ 85142   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.
Reply to
Jim Thompson

Yep. Good group. ...Jim Thompson

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

formatting link
| 1962 | I love to cook with wine. Sometimes I even put it in the food.

Reply to
Jim Thompson

His models usually are accurate and have conversion speed enhancements. He supplied two links, circa July 5, 2013, posted to the LTspice group, which I trashed after downloading each. Big mistake!

LTspiceIV.zip is 37MB of 'tiny' little .asc files so you have an idea how many models are in there. LTSPICE.DOC is 67MB and dialup download took HOURS!!! only to find out today that when unzipping, comes up 'corrupted' download again!

Reply to
RobertMacy

Thanks. That will allow me to find it. As you know, I keep a record of everything... even an LTspice list directory "Pre_2013" ;-)

Found it. How do I download, it's all in Russian, and I can't get the download to start :-( ...Jim Thompson

--
| James E.Thompson                                 |    mens     | 
| Analog Innovations                               |     et      | 
| Analog/Mixed-Signal ASIC's and Discrete Systems  |    manus    | 
| San Tan Valley, AZ 85142   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.
Reply to
Jim Thompson

Here you go...

Kill the pop-up on the lower left, then you can download. ...Jim Thompson

--
| James E.Thompson                                 |    mens     | 
| Analog Innovations                               |     et      | 
| Analog/Mixed-Signal ASIC's and Discrete Systems  |    manus    | 
| San Tan Valley, AZ 85142   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.
Reply to
Jim Thompson

Wow! What a collection! ...Jim Thompson

--
| James E.Thompson                                 |    mens     | 
| Analog Innovations                               |     et      | 
| Analog/Mixed-Signal ASIC's and Discrete Systems  |    manus    | 
| San Tan Valley, AZ 85142   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.
Reply to
Jim Thompson

That's the SMALLEST one! Did you find the larger one?

Reply to
RobertMacy

No. Do you have that link?

Reply to
Simon S Aysdie

I didn't see the .DOC file. What does it have in it? ...Jim Thompson

--
| James E.Thompson                                 |    mens     | 
| Analog Innovations                               |     et      | 
| Analog/Mixed-Signal ASIC's and Discrete Systems  |    manus    | 
| San Tan Valley, AZ 85142   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.
Reply to
Jim Thompson

Now if I can just download that cake !!

Reply to
hamilton

Thank you for sharing Jim. Here's a more Anglo friendly link.

formatting link 

--
Don Kuenz
Reply to
Don Kuenz

Here's something to fret over, compare Unijunction models, wonder which is real...

...Jim Thompson

--
| James E.Thompson                                 |    mens     | 
| Analog Innovations                               |     et      | 
| Analog/Mixed-Signal ASIC's and Discrete Systems  |    manus    | 
| San Tan Valley, AZ 85142   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.
Reply to
Jim Thompson

Probably neither--this is SPICE we're talking about. ;0

I've used PUTs (2N6028) in laser interlocks, where I needed to be sure that there wouldn't be any weird behaviour on power-up or with transients.

BTW kudos for working to pass stuff along to the next generation. Now all you have to do is start writing for real.

Cheers

Phil Hobbs

--
Dr Philip C D Hobbs 
Principal Consultant 
ElectroOptical Innovations LLC 
Optics, Electro-optics, Photonics, Analog Electronics 

160 North State Road #203 
Briarcliff Manor NY 10510 USA 
+1 845 480 2058 

hobbs at electrooptical dot net 
http://electrooptical.net
Reply to
Phil Hobbs

I suspect the MicroSim/Motorola/THYRYSTR.lib is pretty close. It's certainly complex enough ;-) ...Jim Thompson

--
| James E.Thompson                                 |    mens     | 
| Analog Innovations                               |     et      | 
| Analog/Mixed-Signal ASIC's and Discrete Systems  |    manus    | 
| San Tan Valley, AZ 85142   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.
Reply to
Jim Thompson

After some more head-scratching, and dumping the ancient single junction (Unijunction) device and looking only at the "PUT" (4-layer device), the _only_ two transistor model makes sense...

*Programmable Unijunction Transistor pkg: TO-226AA, Don Kuenz
  • .SUBCKT 2N6027DK 1 2 3 .SUBCKT 2N6027DK 2 1 3 ; B2 E B1
************** K1 G K2 Q1 2 4 3 NMOD Q2 4 2 1 PMOD .MODEL NMOD NPN(IS=5E-15 VAF=100 IKF=0.005 ISE=1.85E-12 NE=1.45
  • RB=10 RE=0.5 RC=0.5 CJE=3.5E-11 VJE=0.75 CJC=1.1E-11 VJC=0.75 TR=4.76E-8
  • TF=16N VJS=0.75 ) .MODEL PMOD PNP(IS=2E-15 VAF=100 IKF=0.005 ISE=1.9E-12 RB=10 RE=0.5
  • RC=0.5 CJE=3.5E-11 VJE=0.75 TF=1.6E-8 CJC=1.1E-11 VJC=0.75 TR=5.1E-8
  • TF=16N VJS=0.75 ) .ENDS 2N6027DK

What caught my eye was unusually low IKF (50x smaller than a 2N2222) for a discrete bipolar device... and unusually high ISE (10x that of a

2N2222).

My bet is I will be able to relate those parameters to peak, valley and hold-off currents.

So a "PUT" amounts to a special case of an SCR structure

Fun stuff!. ...Jim Thompson

--
| James E.Thompson                                 |    mens     | 
| Analog Innovations                               |     et      | 
| Analog/Mixed-Signal ASIC's and Discrete Systems  |    manus    | 
| San Tan Valley, AZ 85142   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.
Reply to
Jim Thompson

IIRC the gate is opposite polarity to an SCR, but then it's over 15 years since I used one.

Cheers

Phil Hobbs

--
Dr Philip C D Hobbs 
Principal Consultant 
ElectroOptical Innovations LLC 
Optics, Electro-optics, Photonics, Analog Electronics 

160 North State Road #203 
Briarcliff Manor NY 10510 USA 
+1 845 480 2058 

hobbs at electrooptical dot net 
http://electrooptical.net
Reply to
Phil Hobbs

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