/Schematics/Audio devices

Title Short description Rate Download
Small electronic siren Siren with two NE555. 2.86 3,888
Small electronic siren v2 Small electronic siren with NE562. 2.88 2,143
Stereo amplifier Stereo audio amplifier with ULN2274B. 2.90 2,835
Stereo coder Stereo coder. 2.83 1,489
Stereo coder - multiplexer This stereo coder is suitable for FM transmitters if you wish to transmitt stereo audio. 2.89 2,122
Tremolo effect Tremolo audio effect. 2.84 1,224
Two tone siren at 1.5V Nice little siren operating at 1.5V. 2.88 2,398
Two tone siren v1 Two tone siren using two NE555 ICs. 2.89 1,343
Two tone siren v2 Two-tone siren with CMOS IC 40106. 2.84 1,249
Two tone siren v3 Two tone siren using two NE555 timer ICs. 2.99 2,270
Two transistor audio amplifier Two transistor audio amplifier. 2.81 3,243
Ultrasonic generator Generates audio signal from 12 to 50 kHz. 2.88 1,495
Ultrasonic receiver Ultrasonic audio receiver. 2.92 1,346
Underwater microphone Underwater microphone with TBA820M. 2.84 1,192
VU-meter with 6 LED diodes VU meter with 6 LED diodes with no power supply. 2.87 3,371

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