Projects Projects
120 Seconds Voice Record – Play Back
This project is a message recording board capable of recording 120 secs of audio.
20 Seconds Voice Record – Playback
This project is a message recording board capable of recording 10 to 20 secs depending on audio quality.
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.
Cheap Audio Booster
Universal Preamplifier
Description Most audio amplifier systems must have preamplifiers with many different characteristics.
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.
600W Audio Amplifier
Description The circuit is based around {LM4702} manufactured by NATIONAL semiconductors & {MJ11029-MJ11028} by ON semiconductors It is a high fidelity audio power amplifier.
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.
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.
Infrared cordless Headphone Amplifier
Description Using this low cost Project one can reproduce AUDIO from TV without disturbing anyone.
Three Channel Audio Mixer
Description Above schematic is for a three channel audio mixer.
Active Bass & Tremble Controller
ACTIVE BASS TONE CONTROLLER circuit diagram It is very useful (and has Best Quality) for 1 -100watt AUDIO AMPLIFIERS