This multivibrator that drives an LED has ultra-low consumption, working with voltages from 1.5 V. The circuit is from a publication in 1998 and the diode can be any of the Schottky type. The frequency depends on C1 and C2 and can be changed through these components. The LED is of high brightness and the duration of the flashes depends on C2, as well as its intensity.

 


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