Elenco Upgrade Kit SC500 to SC750 - Manual (Page 137)

-48-
Project #PC43
Oscillation Sounds PC
OBJECTIVE: To view the output of an oscillator circuit.
You may look at a pulse close-up by changing the time scale and
slightly adjusting the delay, as shown.
You may look at the frequency spectrum on your own if desired.
Build the circuit and try the settings shown here. This circuit
produces a series of pulses (shown below), representing when the
transistor is activated.
Settings
Time scale Delay
Project #PC44
Oscillation
Sounds PC (II)
Using the circuit from PC43,
connect the whistle chip across
points C & D.
Notice how the
shape of the pulse has changed
from that shown in PC43 (using the
same settings):
Project #PC45
Oscillation
Sounds PC (III)
Using the circuit from PC43,
connect the whistle chip across
points B & E.
Notice how the
shape of the pulse has changed.
Project #PC46
Oscillation
Sounds PC (IV)
Using the circuit from PC43, install
the whistle chip under capacitor
C2. Notice how the shape of the
pulse has changed.