Wednesday, November 19, 2014

250 milliwatts Amplifier with TDA2822


This is 250 milliwatts amplifier scheme design with TDA2822. This low power amplifier generates 250 mW on each channel, can be used for general purposed application such as walkman, mp3 player, radio etc. This may well configured to operate in stereo or bridge, which is obtained more power in mono channel.

Sunday, June 22, 2014

Echo Chamber Schematic Diagram


This is the schematic diagram of echo chamber circuit which will convert the input sound to have echo sound just like if you talking in the cave. This echo chamber circuit can be applied on any source of audio signal like microphone, mp3 player, radio, etc. The aims is smoothing the voices with echo.

Saturday, August 18, 2012

Electronic Stethoscope Circuit

This is an electronic stethoscope circuit diagram. The operation of the circuit is very simple. It's work is similar to general home audio system. The heartbeat sounds catched by electret microphone and then the amplifier amplify the signal.