Using Falstad's Circuit Simulator

Step 3 Using the scope and editing components

If you want to see the waveform, current consumption, power or voltage, the scope tool can be used. This can be used on most of the components excluding some such as Triodes. To see a components waveform in the scope, you can right click the component and select "View in Scope".

Once the component is in the scope (At the bottom of the program), you can select what is viewed in the scope such as if i use the LED for example i can make the scope view its Current by right clicking the scope at the bottom and deselecting "Show Voltage". This will show only the current; as "Show Peak Value" is still selected, this allows you to see the peak amount used by the LED, this can be useful if designing PWM circuits etc.

To Edit a component such as a Resistor, right click the resistor and go on "Edit". A small box should appear which in it says: Resistance (ohms) with a box next to it and a slider bar underneath. The desired resistance can be put into that box to change the components resistance. This box varies with each component.

Comments

[Unit042]

Wait, did you say there were triodes (as in, vacuum tubes) in the available components? I have a version of it (simulator) on my hardrive, I use that thing for lots of stuff, but it doesn't seem to do MOSFETs or transformers right. It just freaks out when I try to do a joule thief circuit. And I crash it all the time with my simulated microcontroller. I never knew that there was somebody else on instructibles that knew of this....

[bloke2022]

i knew of this as well, and crash it all the time.

[pyrohaz]

Yeh, i know about the joule thief circuit. I have tried that circuit myself and it doesn't seem to work. On the current version of the simulator, you can get tiodes now, :D. For transformers, the only main part is the inductance. Also, you need to remeber that if its a step-down transformer, the ratio has to be below 0. That way it works for me :D

[Unit042]

Oooooh! Triodes! I'll just have to update then... :-)

[Unit042]

I've been using the newest version and... The potentiometers are awesome! They are awkward to resize/place, but they are handy! Too bad the scope probes were taken out in this next version. The zener diodes... about time! I've had to make an equivalent using a couple of opamps and some resistors.