natheer

user resercher

city al-nahrain university


  • Battery Charging circuit

  • Created: Jun 18, 2017

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Description

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Summary

"This smoke detector is designed using 555 timer circuit and some common electronic components. The photo interrupter module is used as the smoke detector, while timer 555 is wired in a stable configuration as an AF oscillator for sounding alarm via a loudspeaker."

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