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sound amplifier chip BA3505F

Принципиальная схема маломощного двухканального усилителя мощности звуковой частоты на микросхеме BA3505F представлена на рисунке. Отличительной чертой данной микросхемы есть то, что она обладает подстройкой громкости звука на каждом канале отдельно. Также в схеме предусмотрена светодиодная индикация звукового сигнала на выходах.Continue Reading

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Marching alarm flashlight of LED lamp

Using LED lawn lamp, You can make camp-alarm flashlight. Its main functions, except flashlight, - feeding the sound and light signals at breakage security loop. The basis was taken LED lamp diameter 73 and height 25 mm. It is equipped with a solar panel of dimensions… Continue Reading

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Bending plates of aluminum and its alloys

In amateur practice is sometimes required to bend under a certain angle plate of aluminum or its alloy - duralumin (дюра­ля). The most frequent case - bending to the right angle (90°). If such an operation performed simply by clamping the plate, followed by folding the grip, the… Continue Reading

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Electronic drums from a USB joystick

The proposed device - simulator for electronic musical drum kits, in which to play the sounds of drums used computer speaker system. The computer at least the most simple sound card must be installed. the sound of drums are used in a variety of gaming and entertainment programs, but… Continue Reading