Agricultural irrigation line burglar alarm circuit diagram 2

Published:2011/6/16 3:47:00 Author:Lucas | Keyword: Agricultural, irrigation line , burglar alarm | From:SeekIC

The agricultural irrigation line burglar alarm circuit is composed of the detection circuit, LED indicator circuit and sound alarm circuit, and the circuit is shown as the chart. Detection circuit is composed of the test buttons S1 ~ S3, resistors RI ~ R3, capacitors C1 ~ C12 and diodes VD1 ~ VD3, VD7, VD9, VD13 ~ VD15. LED indicator circuit consists of resistors R4 ~ R6, light-emitting diodes VL1 ~ VL3, transistors VI ~ V6 and diodes VD4 ~ VD6, VD10 ~ VD12, VD16 ~ VD18. Sound alarm circuit is composed of the audio integrated circuit IC, capacitors C5 ~ C7, transistor V7 and speaker BL. R1, R3 and R5 select 1/2W metal film resistors.



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