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project report submitted on continuous alarm generation using 555 timer and a relay pdf

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project report submitted on continuous alarm generation using 555 timer and a relay pdf

Guest
Guest

30-12-2012, 12:18 AM

I made an alarm using LDR(light dependent register). The alarm work depending on the light intensity, when light intensity will low then the alarm will rise up and when the light intensity will high then it remain off. My problem is that the buzzer is not playing continuously when the intensity is low. I need a continue beep and a reset button to reset the device and also the alarm.
Sorry, for my bad English.

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project report submitted on continuous alarm generation using 555 timer and a relay pdf - by Guest - 30-12-2012, 12:18 AM

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