Elenco Electronics Snap Circuits - Oscillation Sounds; Oscillation Sounds (II); Oscillation Sounds (III); Oscillation Sounds (IV)

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Project #399
OBJECTIVE: To make sounds with an oscillator circuit.
Turn on the switch (S1) and the speaker (SP) emits an oscillating
sound. Now connect the whistle chip (WC) across points A & B and
the sound changes.
Oscillation Sounds
OBJECTIVE: Show variations of project 399.
Use the circuit in project 399. Connect the
whistle chip (WC) across points B & E.
Oscillation
Sounds (III)
Project #401
OBJECTIVE: Show variations of project 399.
Oscillation
Sounds (IV)
Project #402
OBJECTIVE: Show variations of project 399.
Touch-Control
Oscillator
Project #403
OBJECTIVE: Show variations of project 399.
Use the circuit in project 399. Connect the whistle chip (WC) across
points C & D.
Oscillation Sounds (II)
Project #400
Using project 399, replace the 100kΩ resistor
(R5) with the photo resistor (RP). Wave your
hand over the resistor and the frequency
changes.
Use the circuit in project 399. Install the
whistle chip under capacitor C2. Turn on the
switch (S1) and the circuit oscillates at
another frequency.