C=Circuit Diagram

Amplifiers

Op-Amp Mic Preamp [C]

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Dynamic Microphone Preamp [C]

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24 Watt Class A Amplifier [C]

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150W MP3 Car Amplifier [C]

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Buffer Amplifier [C]

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Vinyl Pre-Amplifier [C]

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Class-A / AB Amplifier [C] [C]

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Low Voltage Preamplifier [C]

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Soft switching Amplifier with Tone Controls [C]

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Cheap 100 to 150 Watt Amp [C]

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Hi-Fi Preamplifier [C]

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TDA2030 8 Watt amplifier [C]

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Stereo Line Driver [C]

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2 Watt Audio Amplifier [C]

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Electret Condenser Microphone (ECM) Preamplifier [C]

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Headphone Amplifier [C]

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15 Watt Amplifier [C]

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Quadraphonic Amplifier [C]

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20 Watt Power Amplifier [C]

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6 – 10 Watt Stereo Amplifier [C]

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Audio Level Meters

Stereo VU Meter [C]

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Audio Level Meter (vumeter) Circuit [C]

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Audio Level Meter [C]

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Peak Reading Audio Level Meter [C]

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Tone Control Circuits

6 Input Mixer [C]

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Voice Scramblers (Change Your Voice) [C]

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Stereo Mixer [C]

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Bass-Treble Tone Control Circuits [C] [C]

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Five band graphic equalizer using a single IC/chip [C]

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Three band graphic equalizer [C]

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Audio Light Modulator / Colored Organ (1 bulb) [C]

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Audio Light Modulator / Colored Organ (2 bulbs) [C]

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Audio Light Modulator (picks up sound from built in microphone) [C]

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Devices

Arduino Li-Fi Audio Player With Solar Panel [C]

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Ultrasonic Dog Whistle [C]

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Audio Room / Baby Monitor [C] [C]

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Simple Intercom Systems [C] [C]

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Sound Activated Circuits [C] [C]

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Audio Voice-Over Circuit [C]

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Computer Microphone [C]

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Notch Filter [C]

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Infrared headphones [C]

R=Resource

Electrical Safety [R] [R]

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Electronics Project Books