KhaledOsmani
Full Member level 6
Hello,
This circuit works as a light detector,
once there is light fallen on the LDR, the speaker buzzes
But, when connection this speaker alone, and supplying a voltage across its terminals, no sound is obtained. contrary to the buzzer, that once supplied, a sound occurs.
what is the difference between a speaker and a buzzer, why to choose a buzzer in this circuit, and why this speaker make no noise once supplied?
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This is the circuit
This circuit works as a light detector,
once there is light fallen on the LDR, the speaker buzzes
But, when connection this speaker alone, and supplying a voltage across its terminals, no sound is obtained. contrary to the buzzer, that once supplied, a sound occurs.
what is the difference between a speaker and a buzzer, why to choose a buzzer in this circuit, and why this speaker make no noise once supplied?
- - - Updated - - -
This is the circuit