Astable Multivibrator Ic 555. Multivibrator is the circuit which converts sinusoidal wave into square wave. We shall discuss what duty cycle is in a moment.
The astable multivibrator can be designed with a 555 timer ic to give output with duty cycle more than 50 and duty cycle less than 50 or 50. It can be used for timing from microseconds to hours. The first 555 integrated circuit was designed in the year 1971 by the corporation of signetics as the se555 or ne555.
In this role an external resistor and capacitor set the time constant for oscillation.
Output waveform of multivibrator is sqaure wave signal. Ic 555 timer is a one of the most widely used ic in electronics and is used in various electronic circuits for its robust and stable properties. Output waveform of multivibrator is sqaure wave signal. 555 astable multivibrator calculator 2 this calculator takes frequency duty cycle and c as inputs and provides r1 and r2 as outputs.