Electronic Bird Repeller (3)

Published:2011/5/20 5:22:00 Author:Sue | Keyword: Electronic, Bird, Repeller | From:SeekIC

When there is bird, VT is disconnected,Kdoesn't work and BL makes no sound. When there is bird, BM will transform the bird singing into electric signal, which will be sent to VT and make VT connected after the signal is amplified. K is connected and BL makes a sound of firecracker. When K is connected, C6 discharges until K is released. Then K2 is disconnected, sound circuit and audio amplifier will stop working. BL stops making a sound.



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