2019-02-18

555 timer examples in falstad circuits

Few 555 timer chip examples built digitally in falstad circuit builder.

This one is Schmitt trigger with 2/3 and 1/3 Vcc hysteresis.
Check out extra sliders and see how current through led changes.

Simulation is here - http://tinyurl.com/y4rnjs4o


Another one - LDR logic board. Similar, but without hysteresis as threshold pin is connected to stationary 10k resistor, so the output is passed on at strict threshold level chosen by adjusting the variable resistor.

And the simulation - http://tinyurl.com/y6l7blt2


Here is a monostable circuit. Use switch as a push button and the LED will stay turned on for a certain time.

http://tinyurl.com/y6o47oxw

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