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Basic Electronics Part 3: Multiplexer, Timer and Optocoupler

Basic Electronics Part 3: Multiplexer, Timer and Optocoupler. Prof . Yasser Mostafa Kadah – www.k-space.org. Recommended References . Data sheets for cited integrated circuits. Analog Multiplexer/ Demultiplexer. The 555 Timer. http://www.electronics-tutorials.ws/waveforms/555_timer.html.

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Basic Electronics Part 3: Multiplexer, Timer and Optocoupler

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  1. Basic ElectronicsPart 3: Multiplexer, Timer and Optocoupler Prof. Yasser Mostafa Kadah – www.k-space.org

  2. Recommended References • Data sheets for cited integrated circuits

  3. Analog Multiplexer/Demultiplexer

  4. The 555 Timer http://www.electronics-tutorials.ws/waveforms/555_timer.html

  5. 555 Timer: Monostable Operation • Trigger input cause a change of output for a time determined by component values http://www.electronics-tutorials.ws/waveforms/555_timer.html

  6. 555 Timer: Bistable Operation • Two stable states • Switching by Trigger and Reset inputs http://www.electronics-tutorials.ws/waveforms/555_timer.html

  7. 555 Timer: Astable Operation • Free running oscillator http://www.electronics-tutorials.ws/waveforms/555_timer.html

  8. 555: Frequency Divider • Same as monostable operation circuit • Adjustment of period to be long enough

  9. 555: Pulse Width Modulator

  10. Optocoupler/Optoisolator/Optotriac • Digital • Transistor • Triac

  11. Assignments • Assemble a 4051 analog multiplexer circuit and test it in the lab. • Using a 555 timer chip, assemble and test the monostable, astable and pulse width modulation circuits. • Test the operation of an optoisolator in the lab.

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