555 Timer Astable Calculator






Output:

Frequency: 28800.00 Hz

Duty Cycle: 40.00 %

Time High: 20.79 ms

Time Low: 13.86 ms

    TIPS:

      • Period(T) and Frequency(F) are inversely proportional
      • Increase in C1 will decrease Frequency (F)
      • Increase in R1 will increase High Time (T1) but will not alter low Time (T2)
      • Increase in R2 will increase High Time (T1) and also increase low Time (T2)
      • So, always set T2 first and then T1
      • Increase in R2 will decrease duty cycle
      • Once we have all these details, we can get to know the complete properties of the output wave. To get used to the formulas lets calculate the value for parameters using these formulas for the circuit diagram given above.

    = 1.44 / (1000 +2×100000) × 0.00001 or (1/1.393)

    F = 0.718 Hertz

    Duty Cycle is always given in terms of percentage, if high time is equal to low time then the pulse has 50% duty cycle and if the off time is zero then it has 100% duty cycle. We can calculate the duty cycle as. 555 timer calculator.

    Duty Cycle = (T1/T) × 100

    = (0.966/1.393) × 100

    DC = 50.249 %

    Electrical Learner we can calculate these parameters for any value of Resistor and Capacitor. Using the 555 timer calculator will really come in handy when you are designing a new circuit for your project. 555 timer frequency and duty cycle calculator.