Results 283 comments of Paul Falstad

You shouldn't need that... I just tried creating a VCVS that outputs the dadt of i_p (which is a 100khz sine wave of amplitude 199uV) and I got a 125V...

I think he means he wants to be able to import an image into the simulator. The image would be in the background and serve as a guide so he...

Equivalent series resistance? That probably wouldn't be that hard. Adding a small default series resistance to all capacitors and inductors might solve some other issues, too (like capacitor loops, etc).

It seems that you can simulate a unidirectional TVS diode by a zener, and a bidirectional TVS diode by 2 zeners. You can do a MOV with a VCCS. Here...

I guess he already said you could use 2 zeners to do a TVS.

Great idea. I'm not sure how to do it though.

what did you have in mind for the 1st order, 2nd order laplace modules? You can do summing, integral, derivative with a VCCS.

You can just add a resistor in series with the voltage source to represent the internal resistance...

You can right click a capacitor, select Edit, then set the initial charge to set the capacitor to when reset is pressed. Unfortunately you can't do that with crystals yet.

Is it that important what state a crystal starts in? Crystals are used for very high frequency oscillators, and the initial state doesn't seem that important unless I'm missing something.