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alright /g/uys
I'm a complete newfag when it comes to spice. Trying to use KiCAD with it's built in simulator (on its nightly build), however I'm struggling to get any meaningful results even with a simple resistor circuit.
>netlist (why does it label the nodes like this?):
.title KiCad schematic
RR1 VEE VCC 300
.end
>simulation output:
Circuit: KiCad schematic
Doing analysis at TEMP = 27.000000 and TNOM = 27.000000
Fatal error: DCtrCurv: source / resistor vvcc not in circuit
doAnalyses: no such device
run simulation(s) aborted
Any help/abuse appreciated
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Also I have literally no idea what to use as my DC voltage sweep source
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>>59527309
http://lmgtfy.com/?q=intro+to+spice+simulation
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>>59527917
I get it I get it lol trust me I've had a look and get how to do it by making your own netlist and that, what I'm struggling with is simulating within kicad (I'm trying to simulate a voltage rectifier with Darlington transistors and zener diodes, this is just for the sake of simplicity).
I've read up though and I just don't see how I can insert a dc voltage source into my schematic, like the bloke does in this vid: https://youtu.be/A2_-hdRcf4U
No need to be condescending I'm trying my best to be pragmatic
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>>59527309
I've never used KiCAD but it is highly probable that you need to associate VCC and VEE with a DC voltage source. Those things are probably just labels for ease of use and not circuit elements.
It labels nodes like that because<Device name> <Node1 Label> <Node2 Label> <Device property>
And VCC and VEE are just labels.
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>>59528097
Thanks, I was thinking the same - VCC and VEE are just power flags I guess. I can't seem to find a dc voltage source in the libraries unfortunately.
I've seen people add a dc source into their netlists, do you think it would be easier just doing that?
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>>59528213
Download a source library then...
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>>59528213
It should be just 2 lines more in netlist but editing netlist everytime there's a change is not preferable. Find a better way. Follow a simple tutorial to see how others are doing it.
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>>59528316
Can you recommend one for kicad? Can't seem to find one I've asked on forums nothing yet
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>>59528324
I think you can put in spice commands as general text comments on the actual schematic, but yeh I'll take a look at some tutorials
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>>59528508
Spice commands are not the same as devices added to the circuit. You can use .include to include a netlist that has the DC source device and is connected to VCC and VEE in some way or you can set the node voltages using spice commands. But as I said this should be pretty common and straightforward to solve, there is no need to complicate things.
Thread posts: 11
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Thread images: 1