/Schematics/Audio devices

Title Short description Rate Download
Small electronic siren Siren with two NE555. 2.84 3,776
Small electronic siren v2 Small electronic siren with NE562. 2.85 2,087
Stereo amplifier Stereo audio amplifier with ULN2274B. 2.89 2,813
Stereo coder Stereo coder. 2.81 1,462
Stereo coder - multiplexer This stereo coder is suitable for FM transmitters if you wish to transmitt stereo audio. 2.84 2,099
Tremolo effect Tremolo audio effect. 2.80 1,215
Two tone siren at 1.5V Nice little siren operating at 1.5V. 2.83 2,350
Two tone siren v1 Two tone siren using two NE555 ICs. 2.85 1,313
Two tone siren v2 Two-tone siren with CMOS IC 40106. 2.79 1,217
Two tone siren v3 Two tone siren using two NE555 timer ICs. 2.95 2,199
Two transistor audio amplifier Two transistor audio amplifier. 2.78 3,207
Ultrasonic generator Generates audio signal from 12 to 50 kHz. 2.86 1,474
Ultrasonic receiver Ultrasonic audio receiver. 2.90 1,331
Underwater microphone Underwater microphone with TBA820M. 2.83 1,182
VU-meter with 6 LED diodes VU meter with 6 LED diodes with no power supply. 2.84 3,343

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