A low power consumption sound and light alarm circuit
An acousto-optic alarm and circuit technology, applied in the electronic field, can solve problems such as single function, complex circuit of alarm equipment, manufacturing cost and alarm efficiency can not meet the demand, and achieve the effect of low circuit structure cost and rich functions
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[0012] The following are specific embodiments of the present invention and in conjunction with the accompanying drawings, the technical solutions of the present invention are further described, but the present invention is not limited to these embodiments.
[0013] Please refer to figure 1 , the present invention includes a first 555 type time base integrated chip IC1, a second 555 type time base integrated chip IC2, a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a fifth resistor R5, a Six resistors R6, seventh resistor R7, first capacitor C1, second capacitor C2, third capacitor C3, first diode D1, second diode D2, third diode D3, first triode Q1, the second triode Q2, speaker B and light source EL.
[0014] The positive end of the first diode D1 is connected to the voltage input terminal, the negative end is connected to one end of the first resistor R1, and the other end of the first resistor R1 is connected to the seventh pin of the ...
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