Category: Audio
Low noise Mini Electret Microphone PreAmplifier
The single supply microphone pre-amplifier amplifies the output signal of an electret capsule microphone to audio line levels. An op amp is used as a trans-impedance amplifier to convert the output current from the microphone in to a signal level voltage. The circuit works with 9V so...
Continue ReadingHow to Build a Class-D Power Amp
Cezar Chirila @ allaboutcircuits.com shows how to build a Class-D amplifier which has amazing efficiency. What is a Class-D audio power amplifier? The answer could be just a sentence long: It is a switching amplifier. But in order to fully understand how one works, I need to teach...
Continue ReadingRTL8710 Is a New ESP8266 Competitor
In the last two years, ESP8266 was the Wifi Chip/Module which dominated the market of hobbyists, even a lot of commercial products use ESP8266, due to the low price, ease of use and large community around ESP8266. RTL8710 is a Wifi network solution from the Taiwanese Company...
Continue ReadingSound to Light Effect
This project will turn your favorite music into light effects, a microphone picks up the sound and gives light effects with 6 Red LEDs, ideal for creating fun atmosphere at parties & discos. Supply 9V-12V DC. Features Supply 9V-12V DC (PP3 9V Battery) On Board Preset...
Continue Reading3W Stereo Audio Amplifier using TDA7266D
Tiny stereo audio amplifier board has been designed around SMD TDA7266D IC from ST. The TDA7266D is a dual bridge amplifier specially designed for Portable Audio, LCD TV/Monitor, PC Motherboard, and TV applications. This circuit provides high quality audio output of 3W approx. on each...
Continue ReadingAn S/PDIF Sound Card Using PCM2906
joesugar @ ceworkbench.wordpress.com has designed a S/PDIF Sound Card using the PCM2906 IC. In the belief that I’d rather build than buy I decided to update one of my previous projects, a PCM2904 based sound card, to include an S/PDIF interface. The update was a cinch because TI...
Continue ReadingLM386 SMD Audio Amplifier Module
The Tiny Audio Amplifier MODULE is a good choice for battery operation. It is based on LM386 IC, useful in various applications like robotics, science projects, intercom, FM radio and many more. Specifications Power Supply 6V-9V 300mW Output @ 8Ohms Load On Board...
Continue ReadingLight To Audio Oscillator
Light Sensitive Audio Oscillator project is a fun loving project which will create different sound effects depending on the light falling on the sensor Specifications Supply input 5 ~ 12 VDC Output 8 Ohms, 0.5 W Speaker Terminal pins for supply voltage and speaker...
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