The simulator probably won’t lure you away from LTSpice, and there are other Web-based alternatives like TINACloud and others, but the simplicity of the Falstad simulator (and the new HTML 5 port) ...
There was a time when building electronics and building software were two distinct activities. These days, almost any significant electronic project will use a CPU somewhere, or — at least — could.
Over at www.falstad.com is a circuit simulator with a few ready to run demos. This one is the good old two transistor multivibtrator (pictured), where you can watch voltages change and blobs of ...