Elenco Circuit Maker Sound Plus 200 - Manual (Page 60)

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Project #149
Set the adjustable resistor (RV) to the middle position and then turn on
the slide switch (S1). Wave your hand over the photoresistor (RP) and
the sound changes. You can adjust the sensitivity by moving the
adjustable resistor to a different position.
Light Oscillator
Project #151
Set the adjustable resistor (RV) to the far left and turn on the slide switch
(S1). The circuit produces around two pulses per second, which power
the speaker (SP2), lamp (L4), and LED (D1). Increase the rate by moving
the adjustable resistor to the right.
Sound & Light Stepper
Circuit
Change the 10mF capacitor (C3) to the 100mF (C4) and see how the time
changes.
Change the whistle chip (WC) to the 0.1mF capacitor (C2) and see how
the sound changes.
Project #150
Another Light Oscillator
Project #152
Another Light
Oscillator
CM-200_Manual_031914.qxp_CM-200_Manual_031914 4/2/14 12:04 PM Page 60