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The Earthquake alarm demonstrationThe Earthquake alarm demonstration ,This is our new creative series which used for junior middle school Innovation experimental ! new beautiful design and very eash to be used.
In this study, mainly by IC circuit, power switch, power indicator, PVC universal bearing, nylon universal bracket, acrylic rods, springs, metal hook code, concave metal plate, LED lights, IC buzzer, base composition (as shown above).
Power supply, LED lights, IC buzzer, metal springs, hooks code, concave and base metal to form a circuit through the IC circuit, but because the hook code and not in contact with the concave metal base plate, the circuit is in the open state; loop no current, LED, buzzer, etc. does not work.
When the device receives a shake up and down or side to side, the hook code and concave metal floor contacts; when the entire loop is closed, LED flash, buzzer.
Device for sound and light manner, when an earthquake occurs (up and down or side to side motion), the circuit intermittent connectivity, issued a warning.
Overall product specification: 350mm × 260mm × 390mm.
Using a common base of PVC molding, base size: 350mm × 260mm × 70mm; 10mm high legs using special rubber pads to prevent vibration and slipping.
Power input: 12VAC/DC2000mA (universal adapter); push-button power switch with red LED power indicator; lightweight springs, metal cylinder, aluminum concave metal plate; white LED, IC buzzer were fixed at two PVC Universal cradle; hook yards and spring use acrylic plate fixed on the nylon universal bracket.
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