Elenco Upgrade Kit SC500 to SC750 - Manual (Page 100)

Now adjust the horizontal scale so the peaks line up with the
gridlines as they did before.
Notice that all the peaks went down in frequency by a
corresponding amount and many changed in amplitude, that is why
your ears hear a different sound. Notice also that in this case the
left-most frequency peak no longer is the highest in voltage (your
results may vary).
Horizontal scale
-11-
Now you can click on the FFT box to return to oscilloscope mode
and look at the waveform with the 0.1
m
F capacitor in the circuit. You
can observe it with the same settings as before for comparison, but
these settings usually work best:
Project #PC2
OBJECTIVE: To demonstrate storage mode.
Screaming Fan PC
!
WARNING: Moving parts. Do not touch the fan or
motor during operation.
! WARNING: Do not lean over the motor.