Analog Sound Synthesis on Your Computer

Step 3 Output

Output can be a graphical plot of voltage vs time, voltage vs voltage, etc., or a text file consisting of a bunch of voltages or currents at each time step, or a .wav audio file that we are going to use a lot in this instructable.

Download and open the file "resistors.asc". Click the little running man symbol (upper left part of the screen) and the circuit should run. Now click on the "OUT" label in the circuit. You'll see the voltage labeled "output" displayed on the graphical output along a horizontal axis that represents time. That is the voltage measured relative to ground (that's why you need at least one ground in every circuit!).

Those are the basics. Try changing one of the resistor values or the voltage then rerun the simulation and see what happens to the output voltage. Now you know how to run a circuit simulator. Easy wasn't it?