Basic Electronics Part 3: Multiplexer, Timer and Optocoupler

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Presentation transcript:

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

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

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

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

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

555: Pulse Width Modulator

Optocoupler/Optoisolator/Optotriac Digital Transistor Triac

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.