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Posts tagged produce sound

Light sensor circuit diagrams

Light sensor circuit diagrams Light sensor circuit diagrams This circuit has two distinct functions, either using the same light sensor, a circuit module is useful for light and turn off the lights (relay), and that only produce sound. Usually applies to a security alarm place. Components used: Sensor LDR 2N3904 Relay Audio alarm using LM386

Top Circuit diagrams

Audio amplifier circuits using TIP31A, TIP32A, mj2955, 2N3055

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