Elenco Electronics rc snap rover Bedienungsanleitung PDF herunterladen (Seite 32)

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Project #61

OBJECTIVE: To give a more dramatic demonstration of using

the photosensitive resistance.

Build the circuit shown on the left.

Turn on the slide switch (S1), a police siren is heard. The loudness of

the sound depends on how much light reaches the photoresistor (RP),

try partially shielding it or placing near a very bright light, and compare

the sound.

Light-Controlled Sounds

Project #62

Light-

Controlled

Sounds (II)

OBJECTIVE: To show a

variation of the circuit in

Project #61.

Project #63

Light-

Controlled

Sounds (III)

OBJECTIVE: To show a

variation of the circuit in

Project #61.

OBJECTIVE: To show a

variation of the circuit in

Project #61.

OBJECTIVE: To show a

variation of the circuit in

Project #61.

Project #64

Light-

Controlled

Sounds (IV)

Project #65

Light-

Controlled

Sounds (V)

Modify the last circuit by

connecting points X & Y. The

circuit works the same way but

now it sounds like a machine

gun.

Now remove the connection

between X & Y and then make a

connection between T & U. The

circuit works the same way but

now it sounds like a fire engine.

Now remove the connection

between T & U and then make a

connection between U & Z. The

circuit works the same way but

now it sounds like an

ambulance.

Now remove the connection

between U & Z, add a 1-snap at Z

(on level 3), add a second 3-snap

between V & W (on level 3), and

finally place the music IC (U1)

directly over the alarm IC (U2) on

level 4. Listen to the sounds.

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