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/LTspice/files/ Lib/ Libs/
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/LTspice/files/ Lib/Diac/
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/LTspice/files/ Lib/Diac/
Brilliant! I'm working on the schematics. Next days i'll send you the first part.
Cool, thanks!
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
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
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
Take a look. there are many substractions but i think it may work... View attachment full bridge trial.zip
I'm liking it so far. Remember that a MOSFET's gate-source is usually limited to +/-20v.
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There are several substraction existing, I try to figure out how to manage them. This was a first (and very wrong) approach. I try to make adjustments. I'll describe you exactly the main problems and maybe we can find solutions.
There are several substraction existing, I try to figure out how to manage them. This was a first (and very wrong) approach. I try to make adjustments. I'll describe you exactly the main problems and maybe we can find solutions.
It's quite OK. I mentioned that for the benefit of the other readers of the thread, mainly. Keep up the good effort!
The file is opened up with the excellent and free electronics simulator, LTspice IV. I love so much about this design tool that Linear Technology produces.
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