The electronic rodent control device described in this paper adopts the infrared light reflection control circuit, which can automatically turn on the working power of the high voltage circuit when the mouse enters its effective detection range, and generates high voltage to kill the mouse. Circuit Operation Principle The electronic rodent circuit consists of a power supply circuit, an infrared control circuit, and a high voltage circuit, as shown in the figure.
In the circuit, the power supply circuit is composed of a power transformer T, a rectifier bridge stack UR, a filter capacitor C4, C5, and a three-terminal voltage regulator integrated circuit IC2; the infrared control circuit consists of an infrared light emitting diode vLI, an infrared photodiode VLS, a transistor V, and a resistor R1. A R6, a capacitor C1 - C3, an integrated circuit IC1, a light emitting diode VL2 and a solid state relay KN; the high voltage is composed of a solid state relay KN, a resistor R7, capacitors C6, C7, diodes VD1, V D2 and a high voltage electrode. After the AC 220V voltage is stepped down by T, UR rectified, C5 filtered and IC2 regulated, the operating voltage of the infrared control circuit is +6V. The oscillating signal outputted by the 5-pin of IC1 is amplified by V, and VL1 is driven to emit modulated infrared light. Usually (when no mouse enters the infrared detection area), V LS can not receive the infrared light emitted by VLl, IC 1 is in automatic oscillation state, its 8 feet output high level, VLZ is not bright, KN and high voltage circuit do not work.
When a mouse enters the infrared detection range, the infrared light reflected from the mouse body is received by VD1, so that the 8 pin of IC 1 changes from high level to low level, VL2 lights up, KN energizes, and high voltage is generated on the high voltage electrode. Kill the mouse. When the dead mouse is removed (the power should be cut off), the VLS is turned off again. The 3 pin of IC1 loses the input signal, the 8 pin becomes high level, V L2 goes out, the KN and the high voltage circuit stop working, and the circuit returns to the waiting state.
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