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Light Alarm Circuits

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Morning alarm with sunlight using LDR and 4011
Posted inSound Generator

Morning sun alarm circuit using IC-4011

This is Morning sun alarm circuit using IC-4011 that hobby It will have sound alarm when morning like a normal clock alarm with lighting sensor same clock.
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Simple Light Detector Alarm
Posted inMeters & Detectors Sound Generator

Simple Light Detector Alarm with solar sensor

This is Simple Solar light alarm circuit with the special edition, that improve this circuit whole new to higher efficiency. use solar cell instead of LDR
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Four Light Sensor Alarm Circuits
Posted inMeters & Detectors

8 Light sensor alarm or Sensitive Sound Generator

These are four light sensor alarm circuits, when be become dark, or Light sensitive switch.Use part is important light sensor LDR light dependent resistor [...]
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Alarm light circuit for battery charger
Posted inBattery Chargers

Battery full charge alarm circuit

The Battery full charge alarm circuit for a general battery charger. It is simplified circuit and cheap, use one transistor BC557 and display with 2 LED.
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