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Circuitos electrónicos: 7404



Stepper motor controller - Driver circuit with circuit design

A stepper motor controller with driver circuit is explained in detail with a schematic.

http://www.circuitstoday.com/stepper-motor-controller


Converters - Frequency Electronic Circuits

http://www.discovercircuits.com/C/co-frequency.htm


8 Note Tune Player

http://www.aaroncake.net/circuits/music.htm