Tumbler circuit schematic
The figure is a schematic diagram of the tumbler circuit. The IC in the circuit uses a 1-flash 2-flash integrated circuit. SB is a simple vibration switch. The fixed piece is a circular copper foil with a diameter of 10mm. The moving piece is a small soft spring. It is fixed at the center of the fixed piece (the copper foil of the center of the fixed piece should be dug), and Solder a small copper ball. When the tumbler is shaken, due to the action of gravity and inertia, the moving piece will hit the fixed piece, which is equivalent to the SB instantly closing, the IC works, and the speaker B sounds through the VT, and D1 and D2 turn brightly. This presents the situation depicted at the beginning of this section.
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