Simple Rain Alarm or Water Detector Circuit with SCR 106CY

Rain detector circuit Diagram

Rain Alarm or Water Detector Circuit with SCR 106CY

Rain detector circuit can be applied to the project or any other hobby, which is so simple principles.When it rains plate (sensor) will receive rain. And a dedicated work has paid to SCR1 and flow control Buzzer noise.

Electronic Part List 

R1 1K 1/4 W Resistor
R2 680 Ohm 1/4 W Resistor
D1 1N4001 Silicon Diode
BZ1 12V Buzzer
S1 SPST Switch
SCR1 C106B1 SCR 106CY
SENSOR See

Notes  

The sensor is a small piece of PC board etched to the pattern showen in the schematic. The traces should be very close to each other, but never touching. A large spiral pattern would also work. 2. Make sure to use a loud buzzer

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