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Square wave generator using IC 555 calculator

Square wave generator using IC 555 calculator allows you to easily determine pulse frequency and other parameters of a circuit.

A square pulse generator built on the basis of the popular 555 microcircuit works as a multivibrator i.e. in self-oscillating (astable) mode. This is a mode in which impulses arise themselves, without any external influences.

To calculate the pulse frequency, you can use the formula:

f = 1 / (0.693 * C₁ * (R₁ + 2 * R₂)),
t₁ = 0.693 * (R₁ + R₂) * C₁,
t₂ = 0.693 * R₂ * C₁,
T = t₁ + t₂ = 1 / f,
D = (t₁ / T) * 100%

In this formula:

t₁ – pulse duration
t₂ – pause duration
f – vibration frequency
T – period
D – duty cycle (%)

As follows from the calculation, in such a generator circuit it is impossible to obtain an exact filling of 50%, that is, a clear meander.

Learn more about square wave generator using IC 555.

This tool also allows you to share and print calculation results.

Learn more how to modify the circuit to get Variable frequency square wave generator.

To easily calculate the pulse parameters of an IC 555 generator circuit in monostable mode use our online Square wave generator using IC 555 in monostable mode calculator.

Learn more about SMD resistor code.

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02/10/1902

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Square wave generator using IC 555 calculator

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