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Old 4th June 2010, 11:17 PM   #21
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I went to the LTspice help group and got the Teccor SCR and triac library files from the files section because I was converting a wall wart to a battery charger. http://tech.groups.yahoo.com/group/L...20Lib/%20Libs/

I was able to add the triac and SCR to the drop-down menu. The diac, however I had a harder time with. I had to paste the model into a spice directive and paste it into the schematic window. http://tech.groups.yahoo.com/group/L...s/%20Lib/Diac/
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Old 5th June 2010, 06:48 AM   #22
luka is offline luka  Slovenia
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i suggest you to post something that you don't need to be registered to view, find some other way?
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Old 5th June 2010, 07:24 AM   #23
orfeus is offline orfeus  Greece
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Quote:
Originally Posted by Electrone View Post
I went to the LTspice help group and got the Teccor SCR and triac library files from the files section because I was converting a wall wart to a battery charger. http://tech.groups.yahoo.com/group/L...20Lib/%20Libs/

I was able to add the triac and SCR to the drop-down menu. The diac, however I had a harder time with. I had to paste the model into a spice directive and paste it into the schematic window. http://tech.groups.yahoo.com/group/L...s/%20Lib/Diac/
Brilliant! I'm working on the schematics. Next days i'll send you the first part.
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Old 5th June 2010, 10:39 AM   #24
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luka, that group is provided by the most respected groups provider on the web, I think. It is the place to go for help on LTspice; I'm not aware of a better place, and it is free like LTspice also is.
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Old 5th June 2010, 10:41 AM   #25
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Originally Posted by orfeus View Post
Brilliant! I'm working on the schematics. Next days i'll send you the first part.
Cool, thanks!
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Old 5th June 2010, 10:52 AM   #26
luka is offline luka  Slovenia
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Quote:
Originally Posted by Electrone View Post
luka, that group is provided by the most respected groups provider on the web, I think. It is the place to go for help on LTspice; I'm not aware of a better place, and it is free like LTspice also is.
Oh I thought you wanted to show schematic (which picture would be easy way to show), but I see you needed help with LTspice... I do agree with you on that, my mistake
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Old 5th June 2010, 11:09 AM   #27
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I really appreciate that, Luka.
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Old 5th June 2010, 11:10 AM   #28
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My suggestion would be UCC3895.
TI (or shall we say Unitrode) has some support articles like http://www.ti.com/litv/pdf/sluu109b
Do not forget that contol circuitry is ususlly under unsafe potential.
The biggest enemy in SMPS is improper wiring/routing and stray capacitances creating current passes where you think no connection exists.
Good luck.
Alex
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Old 5th June 2010, 11:41 AM   #29
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I like Unitrode's tutorial library a lot. They archive articles going back into the mid 1980's. That is great for an old schooler like me.
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Old 7th June 2010, 01:23 PM   #30
orfeus is offline orfeus  Greece
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Originally Posted by Electrone View Post
I like Unitrode's tutorial library a lot. They archive articles going back into the mid 1980's. That is great for an old schooler like me.
Take a look. there are many substractions but i think it may work...full bridge trial.zip
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