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gnucap:manual:examples:simple_power_supply [2022/10/18 04:24] felixs Tie down s1 and s2 |
gnucap:manual:examples:simple_power_supply [2022/10/18 04:51] (current) felixs [Simulate] |
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| ===== Simulate ===== | ===== Simulate ===== | ||
| + | Try | ||
| + | |||
| + | gnucap> param cfilter 5000u | ||
| + | gnucap> param rload 100 | ||
| + | gnucap> print tran v(nodes) | ||
| + | gnucap> tr .2 trace=a > tr.out | ||
| + | |||
| + | Now, there is a file tr.out with voltages over time. Plot some of it, and it may look like | ||
| + | |||
| + | {{:gnucap:manual:examples:pwr_init.png?400|}} | ||
| + | |||
| + | We are interested in v(out). Store it from now on, and simulate a bit further. | ||
| + | |||
| + | gnucap> store tran v(out) | ||
| + | gnucap> tr .5 trace=a > tr.out | ||
| + | |||
| + | {{:gnucap:manual:examples:pwr_out.png?400|}} | ||
| + | |||
| + | OK, not perfect. We should have waited until .3 or more for it to settle. Try tr 0 .3 if you are curious. Anyway, with this waveform stored, we can do some measurements as follows. | ||
| + | |||
| + | gnucap> measure min=min("v(out)") | ||
| + | min= 37.4370112192329 | ||
| + | gnucap> measure max=max("v(out)") | ||
| + | max= 38.0723316837578 | ||
| + | gnucap> param range = max-min | ||
| + | gnucap> eval range | ||
| + | range= 0.635320464524902 | ||
| + | gnucap> measure mean=mean("v(out)") | ||
| + | mean= 37.8378453386751 | ||
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| ==== Set up and first run ==== | ==== Set up and first run ==== | ||