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Project pc7, Electronic sound pc – Elenco PK101 w/ Computer Interface User Manual

Page 23

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Now turn off storage mode and turn on FFT mode to look at the frequency spectrum, try the settings
shown here. Wait mode does not apply in FFT mode, so it has no effect here. Moving the variable
resistor knob will change the spectrum shown.

-23-

SPEAKER

LOOSE WIRES

+9V

100

µµ

F

1M

S

P

10

µµ

F

10k

33k

100k

3.3k

473

502

+

-

Project PC7

OBJECTIVE: To look at the
output signal from a tran-
sistor oscillator while
changing the pitch of the
sound.

Electronic Sound PC