Elenco Upgrade Kit SC300 to SC750 - Manual (Page 41)

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OBJECTIVE: Show variations of project #419.
Connect the whistle chip (WC) across points B & C.
Whistle Chip Sounds (II)
Project #420
OBJECTIVE: Show variations of project #419.
Whistle Chip
Sounds (III)
Project #421
OBJECTIVE: Show variations of project #419.
Whistle Chip Sounds (VI)
Project #424
OBJECTIVE: To make sounds from the whistle chip.
Turn on the switch (S1). As the circuit oscillates, the plate in the whistle
chip vibrates and generates sound.
Whistle Chip Sounds
Project #419
Use the circuit in project #419. Connect the whistle chip (WC) across
points C & D. You should hear a faster sound.
OBJECTIVE: Show variations of project #419.
Whistle Chip
Sounds (V)
Project #423
Use the circuit in project #419, but replace the 100 μ F capacitor (C4) with
the 470 μ F capacitor (C5).
Use the circuit in project #419, but replace the 100 μ F capacitor (C4) with
the 10 μ F capacitor (C3).
OBJECTIVE: Show variations of project #419.
Whistle Chip Sounds (IV)
Project #422
Use the circuit in project #419, but replace the 100 μ F capacitor (C4) with
the 10 μ F capacitor (C3) and connect the whistle chip across points B &
C. You can also connect the whistle chip across points C & D.