Audio Line Receiver using INA134

Audio Line Receiver using INA134

The project described here is a differential line receiver consisting of high-performance INA134 OPAMPs with on-chip precision resistors. The project is fully specified for high-performance audio applications and has excellent AC specifications, including low distortion (0.0005% at...

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1.081
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Audio Line Driver using DRV135 with Balanced Output

Audio Line Driver using DRV135 with Balanced Output

The project presented here is a differential output amplifier that converts a single-ended audio signal input to a balanced output pair. This balanced audio project consists of high-performance OPAMPS with on-chip precision resistors. They are fully specified for high-performance...

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1.063
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49W BTL 4 Channel Audio Power Amplifier

49W BTL 4 Channel Audio Power Amplifier

This is a 49W - 4 Channel audio amplifier project that is built using TB2941HQ power Integrated Circuit which has a built-in four-channel BTL amplifier developed for car audio applications. The maximum output power is 49W using a pure complementary P-Ch and N-Ch DMOS output stage. In...

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1.092
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10W Class-D Stereo Audio Amplifier with Mute, Shutdown and Four Gain Settings

10W Class-D Stereo Audio Amplifier with Mute, Shutdown and Four Gain Settings

This is a Class-D Stereo audio amplifier project that provides 10W stereo output. The amplifier includes Gain control using 2 x Jumpers, Mute function, and shutdown function. RCA female connectors are provided for the audio source input, screw terminals are provided for an easy...

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1.172
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Analog Style VU Meter on OLED Display – Arduino Compatible

Analog Style VU Meter on OLED Display – Arduino Compatible

This is an analog-style VU meter on a 0.96" OLED Display. The project has a 0.96" OLED display, Atmega328 Microcontroller, 3.5 mm audio EP socket for audio signal input. This Arduino compatible hardware can be program using Arduino IDE. Operating Supply 5V DC. Specifications...

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2.726
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2 Comments
Low Voltage Microphone Preamplifier with Variable Compression and Noise Canceling

Low Voltage Microphone Preamplifier with Variable Compression and Noise Canceling

This is a complete microphone signal conditioning project. Designed primarily for voice-band applications, this project provides amplification, limiting, variable compression, and noise gate. User-adjustable compression ratio, noise gate threshold, and two different fixed gains...

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1.820
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5 W + 5 W Dual BTL Class-D Audio Amplifier

5 W + 5 W Dual BTL Class-D Audio Amplifier

The project described here is a high-efficiency dual BTL class-D audio amplifier with single supply operations. The project was built using TDA7491LP13TR from ST. The low profile PCB design can fit in a small area, operating power supply 9-12V DC, Project supports single-ended or...

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1.506
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Microphone Preamplifier – Sound Sensor

Microphone Preamplifier – Sound Sensor

This is an easy to construct dual-stage microphone pre-amplifier. The project can be used as a sound sensor or microphone pre-amplifier. The 1st op-amp pre-amplify the very low-level signal coming from the condenser microphone and 2nd op-amp provides more boost to the audio signal....

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1.994
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