piano
With the inspiration from lab 3, Digital Waveform Synthesis, I want to make a project that can process and playback music. Some songs are pre-stored in memory. ...
stereo balance indicator
This stereo balance indicator circuit diagram is designed using few common external components. The schematic circuit is very simple to build and will provide a...
tone control circuit designed
Using LM833 can be designed a very simple tone control circuit using few external components. For this Lm833 ton control circuit can be used almost any type of ...
signal tracer using lm386 amplifier chip
The main part of this circuit is the LM386 amplifier chip. It also uses a transistor input to buffer the input signal and provide extra gain for the LM386. The ...
volume controller equalizer
This volume controller equalizer electronic project is designed using LM1036 DC tone volume controller with volume and balance circuit for stereo applications. ...
stereo headphone amplifier using lm4882
The LM48824`s Stereo Headphone Amplifier (Class G architecture ) increases audio (MP3, mobile TV, etc. ) playback time with its adaptive power supply approach t...
2 channel audio mixer
This 2 channels audio mixer is based on the 2n3904 transistors which forms 2 preamplifiers. The first preamplifier of the audio mixer has a high gain and can be...
im3500
This circuit is easy to build and uses standard components available at any Radio Shack store. It accepts the audio tone output of a code practice oscillator or...
echo effect circuit
A video of my friend James playing his electric guitar, patched through the audio echo effect system, and then to his amp. I didnG ‚¬ t make any effort to pr...
colour organ
Colour Organ Videos Complete instructions this episode Weekend Projects can be found Fifteen years ago I bought a box from my uncle Here`s what it does.....
Nescaf mod
The NESCAF audio filter is a small and low cost circuit that works great. It is a good addition to any amateur radio setup. It is especially useful with radio r...
Speech Filter
A simple circuit which is switchable between a sharp cut-off above 2. 5 kHz and a narrow bandpass around 800 Hz. In the low pass (LP) state it can be used on sp...
vu meter circuit
This is by far the simplest VUmeter you can build. It is based on a single chip. A volume unit (VU) meter or standard volume indicator is a device for displayin...
digitalVolume
This circuit is designed to digitally increase/decrease the volume of an analog audio signal. It uses a single AVR microcontroller to produce the controlling pu...
Microphone Amp
This is a simple circuit that can detect sounds by using a common condenser microphone. Sensitivity is variable. The circuit`s output becomes High each time a s...
diy microphone preamp
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electronics and communication projects
If you want to do the ground loop elimination in audio path, you have to cut the galvanic connection but pass the whole audio range. The simplest and most commo...
two band ptb tone control
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m8031 ding dong circuit diagram
The circuit M8031 has a built-in RC oscillator and digital envelope circuits that make it to require few external components. The sound generated by the M8031 s...
usb player circuit diagram
In this USB circuit using an IC as a modifier of digital voice data into analog so that it can be applied to a headphone, or again through the power amlplifier ...