Astable mode 555 timer circuit continuously outputs an alternating a high and low signal that can power light loads directly.

One or more LED can be added to the output for a flashing light effect. The timing is controlled by a capacitor, 2 resistors and often a diode.

For quicker video/diagram series, check out the link below! It covers this diagram.

Brief 555 timer astable multivibrator mode circuit

Diagram

YouTube video covering 555 astable mode circuit basics

Electronics course 13 555 timer astable multivibrator mode continuously flashing LEDs circuit



Bonus videos

Square wave to triangle wave using 2 capacitors and 2 resistors electronics circuit tutorial



555 timer 10 millihenry inductor voltage booster circuit step by step build by electronzap video below. Click here to watch directly on YouTube!

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Assortment of commonly used integrated circuits (IC). I made a lot of videos with them.





Power supply I use in my videos.





White version of the oscilloscope that I use in many of my recent videos.





Screwdriver set that I use in my videos.





The ad above is to a best selling multimeter since the ones I use are unfortunately not being sold anymore. It still helps this site if you click the link, check out the meter and compare it with other meters to see what looks best for you!

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