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Im presenting some of my own tested schematics. You can choose one of four categories just by clicking of the corespondent picture. The components I used, are usually not so hard to procure. Id tried to keep my work as close as possible to the industrial standards.
This section is about preamplifiers, medium power amplifiers, power amplifiers, ton corectors, equlizers, VU-meters, and others.
It is presented the entire audio chain, from audio input (a small aparatus output: walkman, pick-up, cd-player) to speakers. It contains also a speakers protections module.
This section explain how to controll a Step by step motor directly from a personal computer. You can also, with small modifications, a dc-motor controlling. It pay attention to the computer port protection.
This section present a few conection possibilities for the high power electrical motors and generators, high power converters. The schematics are only symbolic, without any real values.
This section is about all kind of electronical circuits. You can find here the small domestic automats, light solution for house and parties, detectors, laboratory application.