I am well aware that most , if not, all my issues are likely to arise due to my lack of basic electronic knowledge rather than being Spice specific problems.
The up side is that I will be forced to learn how to understand, and thus do, things properly but I am struggling to get started and think I may be missing something.
For example:-
I decided to look at simple RC networks, something I think I understand on a basic conceptual level but wouldn't know how to calculate or specify.
I tried to start simple with just 3 components 1 voltage source, 1 resistor, 1 cap, and a couple of grounds ..
I expected to be able to pick a 'standard' cap from the database but there don't appear to be any.
To specify a cap my self I need loads of info I don't know or fully understand and I assume that if Spice is expecting it, the info that is, simply ignoring it isn't going to be much use.
Assume I have a disc ceramic marked 473, no info RE manufacturer and no way to accurately measure any of its parameters.
All I 'think' I know is that its 47000pF, how do I decide what else to include in it Spice definition?
Are there accepted standard values for deferent types of cap?
If I am just being dense somewhere please feel free to tell me, looking silly doesn't worry me whilst staying ignorant isn't much use at all.
Thanks, Al
The up side is that I will be forced to learn how to understand, and thus do, things properly but I am struggling to get started and think I may be missing something.
For example:-
I decided to look at simple RC networks, something I think I understand on a basic conceptual level but wouldn't know how to calculate or specify.
I tried to start simple with just 3 components 1 voltage source, 1 resistor, 1 cap, and a couple of grounds ..
I expected to be able to pick a 'standard' cap from the database but there don't appear to be any.
To specify a cap my self I need loads of info I don't know or fully understand and I assume that if Spice is expecting it, the info that is, simply ignoring it isn't going to be much use.
Assume I have a disc ceramic marked 473, no info RE manufacturer and no way to accurately measure any of its parameters.
All I 'think' I know is that its 47000pF, how do I decide what else to include in it Spice definition?
Are there accepted standard values for deferent types of cap?
If I am just being dense somewhere please feel free to tell me, looking silly doesn't worry me whilst staying ignorant isn't much use at all.
Thanks, Al