Bistable mode 555 timer means that the output stays in it’s current state of either high or low, until forced to change to the other state. After changing states, it stays in it’s new state until forced to change again. 2 stable states = bistable.
Brief circuit schematics with short video – List of pages
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Assortment of commonly used integrated circuits (IC). I made a lot of videos with them.
- Set: If the output is low, and you give a low signal to trigger pin (2), then the output will go high and stay there.
- Reset: If the output is high and you give a low signal to reset pin (4), then the output will go low and stay there.
- Reset pin (4) always overpowers trigger pin (2). So, if you give a low signal to both of them at the same time, them the output will be low.
Output goes high when set/trigger button is pressed. Output goes low when reset button is pressed. Output is always low if reset button is held low.
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- Information on this site is not guaranteed to be accurate. Always consult the manufacturer info/datasheet of parts you use. Research the proper safety precautions for everything you do.