49W BTL 4 Channel Audio Power Amplifier
https://www.electronics-lab.com/project/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 addition, a standby switch, a mute function, and […]
10W Class-D Stereo Audio Amplifier with Mute, Shutdown and Four Gain Settings
https://www.electronics-lab.com/project/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 interface with speakers and power supply input. The project was built […]
MEMS Microphone Pre-Amplifier with Compression and Noise Gating – Studio Quality Microphone Pre-Amplifier
https://www.electronics-lab.com/project/mems-microphone-pre-amplifier-with-compression-and-noise-gating-studio-quality-microphone-pre-amplifier/
MEMS Microphones is setting a new performance benchmark across a growing number of industries. These innovative silicon microphones were designed to extend the benefits of the lowest possible self-noise (high SNR) and lowest distortion to an ever-expanding number of applications. The project presented here is a low noise analog MEMS microphone Preamplifier with compression and […]
5 W + 5 W Dual BTL Class-D Audio Amplifier
https://www.electronics-lab.com/project/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 differential audio signal inputs. Jumpers are provided to set the various […]
3W Stereo Differential Input CLASS-D Audio Amplifier with UP/DOWN Volume
https://www.electronics-lab.com/project/3w-stereo-differential-input-class-d-audio-amplifier-with-up-down-volume/
The circuit presented here is a 3W stereo audio amplifier with memory UP/DOWN volume control. The project is based on PAM8408 IC from Diode Incorp which is a filter-less class-D amplifier with high SNR and Differential input which helps eliminate noise. Two tactile switches are provided to control the UP/DOWN volume in 32-steps and it […]
4 Channel Analog Video Distribution Amplifier
https://www.electronics-lab.com/project/4-channel-analog-video-distribution-amplifier/
The project presented here is a low-cost video distribution amplifier capable of driving up to four video lines. The amplifier is configured with a non-inverting gain of 2. The input video source is terminated in 75 Ohms and is applied to the high impedance non-inverting input. Each output line is connected to the op-amp’s output […]
3 Channel Analog Video Splitter with Video Amplifier
https://www.electronics-lab.com/project/3-channel-analog-video-splitter-with-video-amplifier/
If you need to drive multiple video gadgets or monitors from a single video signal source then this board is the right choice for you. This is a 3-channel video splitter with an amplifier and the circuit is built using discrete components. Q2 and Q1 act as a signal amplifier, Q3 act as output driver, […]
Headphone Amplifier For DAC Converter
https://www.electronics-lab.com/project/headphone-amplifier-for-dac-converter/
This is a headphone amplifier project for audio digital-to-analog converters (DACs) with differential voltage outputs. This circuit converts the differential voltage output of the DAC to a single-ended, ground-referenced signal and provides the additional current necessary for low-impedance headphones. Project is built using OPA1688 low distortion, high-drive Sound Plus audio amplifier. The circuit tested with […]
Photodiode Amplifier for Visible Light Using OPA381 – Arduino Nano Shield
https://www.electronics-lab.com/project/photo-diode-amplifier-visible-light-using-opa381-arduino-nano-shield/
The project presented here is a photodiode amplifier for visible light. The output voltage of the circuit increases linearly with light intensity. Low-cost BPW34 photodiode is used as a light sensor and OPA381 op-amp as an amplifier. OPA381 is a transimpedance amplifier that converts photodiode current flow into voltage. The operating voltage of this circuit […]
Tiny Professional Microphone Preamplifier
https://www.electronics-lab.com/project/tiny-proffesional-microphone-preamplifier/
This board has been designed around INA217 low distortion, low noise instrumentation amplifier. The INA217 is ideal for low-level audio signals such as balanced low-impedance microphones. Many industrial, instrumentation, and medical applications also benefit from its low noise and wide bandwidth. Unique distortion cancellation circuitry reduces distortion to extremely low levels, even in high gain. […]