5W Stereo Audio Amplifier
https://www.electronics-lab.com/project/5w-stereo-audio-amplifier/
This project is a 5W Stereo Audio amplifier based on BA5406. Description 5W Stereo Audio Amplifier project based on BA5406 IC which is suitable for application like stereo radio cassette player, stereo components systems etc. The Heart of the project, BA5406 is a dual OTL monolithic power IC with two built-in, high output speaker amplifier […]
20W Audio Amplifier
https://www.electronics-lab.com/project/20w-audio-amplifier/
This project is a 20W Audio amplifier based on LM1875. Description This project is designed to operate with a minimum of external components. This amplifier offers high-quality and high-performance audio at very low distortion. The project is based on National’s LM1875 IC. The IC is thermal and short circuit protected. The LM1875 is a monolithic […]
Voice Echo
https://www.electronics-lab.com/project/voice-echo/
This project is a Voice echo module with build-in amplifier and on-board mic. Description A project has been designed around Holteks Ht8970 voice echo IC. Project can be used in various audio systems karaoke, toys, animatronics, show, display, exhibitions, and sound equipments. The HT8970 is an echo/surround effect processor. It is designed for various audio […]
Digitally Controlled 2.1 Channel Analog Audio Power Amplifier
https://www.electronics-lab.com/project/digitally-controlled-2-1-channel-analog-audio-power-amplifier/
This article introduces high quality digitally controlled 2.1 channel analog audio power amplifier system. This project is mainly based on TDA7377 AF power amplifier and PIC18F452 8bit microcontroller. Basic technical features of this receiver are covered in table1. This unit is specifically design to work with PC sound cards, radio receivers and CD/DVD/Blue-Ray players. Construction […]
60 seconds Voice Record – Playback module
https://www.electronics-lab.com/project/60-seconds-voice-record-playback-module/
This project is a 60 seconds voice record – playback module. Description Voice Module 60 Sec project will playback and record up to 60 seconds of voice message. This circuit is an excellent choice to add voice to your project. Specifications: Up to 60 Seconds of nonvolatile voice storage Up to eight segments record and […]
3 Tone Musical Bell
https://www.electronics-lab.com/project/3-tone-musical-bell/
This project is a 3 tone musical bell. Description Tone Musical Bell is a project built around BT66T (UM66) IC driving, LM386 has been used as audio amplifier to give extra punch. Specifications: Input 6 VDC @ 200 mA Output 8 Ohms 0.5 W Speaker Terminal pins for supply voltage and speaker connection Power-On LED […]
12W Audio Amplifier
https://www.electronics-lab.com/project/12w-audio-amplifier/
This project is intended for use as low frequency class AB audio amplifier. Description Project is built around TDA2006 PENTAWATT package. TDA2006 provide high output current and has very low harmonic cross-over distortion. Further the device incorporate- rates an original (and patented) short circuit protection system comprising an arrangement for automatically limiting the dissipated power […]
Voice Modulator (Sound Effects – Funny Sound)
https://www.electronics-lab.com/project/voice-modulator-sound-effects-funny-sound/
Voice Modulator project is designed around HT8950A to provide two special sound effects viz. Vibrato & Robot. Description This project provides two special effects: vibrato and robot. The vibrato effect is generated by alternating the frequency of an input signal up and down at a rate of 8Hz. The robot function, on the other hand, […]
Tape Head Pre-Amplifier
https://www.electronics-lab.com/project/tape-head-pre-amplifier/
This project is a tape head Pre-Amplifier circuit. Description The circuit is built around a popular Sanyo stereo head preamp IC LA3161. Low electrical signals from the playback heads are fed to pins 1 and 8 of IC1 via DC decoupling capacitors, respectively. Components between pins 2 and 3 and pins 6 and 7 provide […]
120 Seconds Voice Record – Play Back
https://www.electronics-lab.com/project/120-seconds-voice-record-play-back/
This project is a message recording board capable of recording 120 secs of audio. Description This project is designed around ISD25120 which can store 120 Seconds audio. Recording and playback operations are controlled with tact switches. The kit has an onboard microphone and LED to indicate the functions of Play and Recording. IC has a […]