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No. That 'noise' shouldn't be there, and certainly not at only node N008. Nodes N007 and N008 (i.e. the two half-bridge outputs) should have near-identical waveforms. Double-check all connections/values.
You can't, unless you change the IR2110 model. I note that the pinout and symbol of yours are quite different from those of the model I use, so I can't easily use your .asc file.
running one more time to check that I told you right, can I have the model you use please may remake again
also the ringing is on both not just blue its directly underneath the blue
Attachments
Here are my model files (zipped .sub and .asy). The IR2110 model is one I created years ago because the 'official' one ran incredibly s-l-o-w-l-y, or not at all.
I don't have the IRF640 model, so I used a similar one from the standard LTS library.
Here's a simplified version of your sim using my model.
I don't have the IRF640 model, so I used a similar one from the standard LTS library.
Here's a simplified version of your sim using my model.
so I've double checked the connections, it appears to me to be perfect to me, I would have made it more symetrical but couldn't flip the IR2110's or mosfets IRF640 I dont mind building it again its good practice but I would like the IR2110 lib file if you can
Okay thats great the asc file opens but i need to add the ir2110 chip to it and have not installed parts with the given .sub and .asy files before so so so greatful
Just been looking through your schematic, you can really tell you know what your doing, so neat and tidy and has given me a bit more insight into the power of the spice directives and ideas it's very cool and saying I was going to give it another crack to get more liquid/fluent with it but I think that your example simplified version helps even more to be fair so yeah thanks again alec_t
ok I have dragged the sub file into spice and its come up with the familiar screen that im used to, but before I click create symbol I'm waiting a second because I want to use the Ltspice symbol you provided. I want to get it right and not mess it up by creating a new symbol, I'm probably over complicating it, I have a habbit of doing that - but just to make sure, thanks in advance
Good morning, this is what I have! how do I link the symbol to the .sub file. thanks
great what are sub and asy
not used sub or asy before only lib files can you talk me through the adding proccess if you got a minute thank you for your help
Okay thats great the asc file opens but i need to add the ir2110 chip to it and have not installed parts with the given .sub and .asy files before so so so greatful
Just been looking through your schematic, you can really tell you know what your doing, so neat and tidy and has given me a bit more insight into the power of the spice directives and ideas it's very cool and saying I was going to give it another crack to get more liquid/fluent with it but I think that your example simplified version helps even more to be fair so yeah thanks again alec_t
ok I have dragged the sub file into spice and its come up with the familiar screen that im used to, but before I click create symbol I'm waiting a second because I want to use the Ltspice symbol you provided. I want to get it right and not mess it up by creating a new symbol, I'm probably over complicating it, I have a habbit of doing that - but just to make sure, thanks in advance
Good morning, this is what I have! how do I link the symbol to the .sub file. thanks
Attachments
Is there a way to list the components on the schematic in a list going down and lined up virtically one below the other?
and also been reading I want the voltage to ony drop 5% ie if the voltage starts at 245v it can drop 12.25v to 232.75 not 190v
acctually I think I'm on about the bootstrap cap, just out of interest would this circuit work strait off the bat if I built italso wanted to use the 12v source as the main source and put in a voltage regulator to drive the 5v part, is there a voltage regulator in spice? thank you
and also been reading I want the voltage to ony drop 5% ie if the voltage starts at 245v it can drop 12.25v to 232.75 not 190v
acctually I think I'm on about the bootstrap cap, just out of interest would this circuit work strait off the bat if I built italso wanted to use the 12v source as the main source and put in a voltage regulator to drive the 5v part, is there a voltage regulator in spice? thank you
There are several ways to add third party models to LTS. Here's one :-
__Copy the sub and asy files to a folder of your choice.
__Go to Tools/Control Panel.
__Click the magnifying glass icon.
__Add your chosen folder to the paths for the model file (.sub) and its symbol (.asy).
LTS should then find them.
When you click the Component tool, the bar near the top of the drop-down gives access to the folder.
__Copy the sub and asy files to a folder of your choice.
__Go to Tools/Control Panel.
__Click the magnifying glass icon.
__Add your chosen folder to the paths for the model file (.sub) and its symbol (.asy).
LTS should then find them.
When you click the Component tool, the bar near the top of the drop-down gives access to the folder.
There is a Mirror tool near the right end of the toolbar (use the Move tool first).
If you'd used the Label net tool you (and others) would know for sure!
There is spurious oscillation showing. Probably due to some inductive effect feeding back to the gate drive.
I would think so. In post #114 you are looking at the rise and fall ramps of the P1 and P2 pulses, which are specified as 1us. If you were using an MCU to provide those pulses they would likely be much briefer.
There is spurious oscillation showing. Probably due to some inductive effect feeding back to the gate drive.
how do I address that?
There is a Mirror tool near the right end of the toolbar (use the Move tool first).
I did not know that you had to move first.
If you'd used the Label net tool you (and others) would know for sure!
still cant find the label net tool.
"I think red is 230v ac and green and blue are the signals from the H-bridge."
I'm definate red is 230v ac and green and blue are the signals from the H-bridge.
I also want to put into next to the circuit diagram a list of the parts
how do I address that?
There is a Mirror tool near the right end of the toolbar (use the Move tool first).
I did not know that you had to move first.
If you'd used the Label net tool you (and others) would know for sure!
still cant find the label net tool.
"I think red is 230v ac and green and blue are the signals from the H-bridge."
I'm definate red is 230v ac and green and blue are the signals from the H-bridge.
I also want to put into next to the circuit diagram a list of the parts
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