20 Seconds Voice Record – Playback
https://www.electronics-lab.com/project/20-seconds-voice-record-playback/
This project is a message recording board capable of recording 10 to 20 secs depending on audio quality. Description This project has been designed around Winbonds ISD1616 IC (SMD) IC, which is fully integrated, single-chip, single message voice record and playback device ideally suited to a variety of electronics systems, Message duration is user selectable […]
RIAA Corrector
https://www.electronics-lab.com/project/riaa-corrector/
Description To listen old vinyl LP’s in a correct sounding on a sassy with dynamic cartridge you need a circuit, named RIAA corrector. This circuit you can find in old amps, but it isn’t embedded in home cinema equipments or amplifiers can be obtained nowadays. Also, if you want to archive your vinyl LP’s in […]
Cheap Audio Booster
https://www.electronics-lab.com/project/cheap-audio-booster/
Universal Preamplifier
https://www.electronics-lab.com/project/universal-preamplifier/
Description Most audio amplifier systems must have preamplifiers with many different characteristics. These include high-gain linear response for magnetic microphones, low-gain linear response for tuners, and high-gain RIAA equalization for magnetic phone cartridges. To meet this broad requirement, most amplifier designers include a single universal preamplifier circuit. Basically a high-gain linear amplifier, its characteristics can […]
Portable Audio Amplifiers
https://www.electronics-lab.com/project/portable-audio-amplifiers/
Description Above circuits are based on TEA2025 is a monolithic integrated audio amplifier in a 16-pin plastic dual in line package manufactured by UTC .Circuit has an Internal Thermal Protector. It is designed for portable cassette players and radios. You can also use it as your PC Audio Amplifier. A few external components required to […]
600W Audio Amplifier
https://www.electronics-lab.com/project/600w-audio-amplifier-2/
Description The circuit is based around {LM4702} manufactured by NATIONAL semiconductors & {MJ11029-MJ11028} by ON semiconductors It is a high fidelity audio power amplifier. Designed for demanding consumer and pro-audio applications. You can also use this circuit with AV receivers, Audiophile power amps, Pro Audio High voltage industrial applications etc Amplifier output power maybe scaled […]
5-Band Graphic Equalizer
https://www.electronics-lab.com/project/5-band-graphic-equalizer/
Description This complete high quality, low noise 5-BAND GRAPHIC EQUALIZER circuit is based around Monolithic Linear integrated circuit LA3600 manufactured by SANYO. This circuit is very easy to build and has good Quality. You can use it with Portable component stereos, tape-recorders, radio-cassette recorders, car stereos etc… It is On-chip one operational amplifier. 5-band graphic […]
200W Audio Amplifier
https://www.electronics-lab.com/project/200w-audio-amplifier/
Description This complete high quality, low noise mono audio power amplifier is based around the Hybrid Integrated Circuit STK4050 manufactured by Sanyo. The circuit incorporates volume and has a maximum music output power of 200W. The circuit incorporates an on board power supply; therefore, only center tapped transformer is required to power the circuit. I […]
Infrared cordless Headphone Amplifier
https://www.electronics-lab.com/project/infrared-cordless-headphone-amplifier/
Description Using this low cost Project one can reproduce AUDIO from TV without disturbing anyone. It does not use any wire between TV and HEADPHONE. In place of pair of wires it uses invisible Infrared light to transmit audio signals from TV to Headphone. Without using any lens a range of up to 6 meters […]
Three Channel Audio Mixer
https://www.electronics-lab.com/project/three-channel-audio-mixer-2/
Description Above schematic is for a three channel audio mixer. That will provide an overall gain of one between the output and each input channel. Each input channel includes a single 0.1uf capacitor and 100-Kilohms resistor to provide an output impedance of 100K. The number of input channels to this audio mixer can be increased […]