This is a simple design circuit which is the LED burning can be activated only by a gust OFF. This circuit is built using low-cost components. This is the figure of the circuit.
A condenser microphone (M1) is used to feel your breath. When the S1 button is pressed, transistors Q2 and Q3 as a couple wires attached will be activated and drives LED shines. LED remains in this condition. When you puff on a condenser microphone, the sound pressure converted into a voltage signal at the output. This voltage signal is amplified by the transistor Q1.Since collector of Q1 coupled to the emitter of the pair attached, the couple will stop doing as there ever was a signal from a condenser microphone for panting and the LED will go OFF. Push button switch S1 should be pressed again to turn the LED ON.
A condenser microphone (M1) is used to feel your breath. When the S1 button is pressed, transistors Q2 and Q3 as a couple wires attached will be activated and drives LED shines. LED remains in this condition. When you puff on a condenser microphone, the sound pressure converted into a voltage signal at the output. This voltage signal is amplified by the transistor Q1.Since collector of Q1 coupled to the emitter of the pair attached, the couple will stop doing as there ever was a signal from a condenser microphone for panting and the LED will go OFF. Push button switch S1 should be pressed again to turn the LED ON.
No comments:
Post a Comment