555 timer Clap switch circuit electronic project


Posted on Feb 6, 2014

This 555timer clap switch circuit electronic project is designed using some common electronic parts. This 555 timer clap switch circuit electronic project operates from a distance of up to 10 meters from the microphone. Signal from microphone is amplified by transistors T1, T2 and T3. Diode D1 detects clap signals and the resulting positive volt


555 timer Clap switch circuit electronic project
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age is applied to the base of the transistor T4. T5 transistor will amplify the output signal from the T4 transistor and will trigger the monostable multivibrator based on the 555 timer IC. The output signal from the 555 timer IC is used as a clock for a 4017 decade counter. For each successive clap T6 conducts and cuts off alternately, resulting and on of switching for the lamp. Triac used for this project can be a 8T44A or ST044 and can drive load up to 4 amp rating. The 12 volt for powering this electronic circuit project is derived directly from the mains using rectifier diode D2 and some other components like R16 and ZD1 zener diode.




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