555 Multivibrator calculator

555 timer astable multivibrator calculator

555 timer astable multivibrator

Calculate using the values of Resistance RA, RB and Capacitance C as inputs.

" Finding output values of the astable multivibrator from circuit component values".

In Ω (ohms)

ms

In milliseconds

Hz

In Hertz
In Ω (ohms)

ms

In milliseconds

%

In Percentage
In μF (microfarad)

ms

In milliseconds
Calculate using the values of ON time and OFF time as inputs.

" Finding required component values from the desired output values ".

In seconds
In seconds

s

Ω

Hz

In Hertz

Ω

%

In Percentage
In μF (microfarad)

555 astable multivibrator with diode

In the above astable multivibrator circuit, duty cycle of 50% or less than that cannot be generated. So in order to produce a square wave with a duty cycle less than 50%, the circuit is modified by adding a diode D across the resistor RB.

astable multivibrator with diode

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