Meow-simulating rat repellent
A mouse repellent and cat sound technology, applied in animal repellent, application, animal husbandry, etc., can solve the problems of environmental pollution, human harm, energy consumption, etc., and achieve the effects of less energy consumption, avoiding damage, and convenient use
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[0013] Close SA, and the power supply charges C1 through RP, R1, and R2. When C1 is charged to make pins 2 and 6 of A1 greater than 2 / 3 of the power supply voltage, pin 3 of A1 will output a low potential, and the voltage between pin 8 and pin 3 is 3V. VD1, VD2 display light signal. A2's 3-pin and 7-pin terminals get 3V voltage and start to work. After being amplified by VT, BL makes a meowing sound. At the same time, C1 starts to discharge to pin 1 via R2 and pin 7 of A1. When the voltage across C1 is 0.3V, the displays of VD1 and VD2 disappear, A2 stops vibrating, and BL makes no sound. At this moment, the power supply charges C1 again, and the cycle goes on like this.
[0014] The meowing time of BL is 6s, and the silent time is 15s~30min, which is selected by adjusting the potentiometer RP. Adjusting the timing capacitor C1 can not only change the silent time, but also change the meowing time.
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