555 timing circuit calculator
Enter the value:
C
F
R1
Ω
R2
Ω
recovery
calculate
Actual calculation results：
Duty cycle
frequency (Hz)
TL(seconds)
TH(seconds)
Result after keeping significant digits：
Duty cycle
frequency (Hz)
TL(seconds)
TH(seconds)
Input parameters: R1 (ohm); R2(ohm); C(F)
Output parameters: duty cycle (%), high level time (s), low level time (s), frequency (Hz)
Calculation formula:
TH (high level time s) = 0.693 * (R1 + R2) * C
TL (low level time s) = 0.693 * R2 * C
Frequency (output frequency) = 1.44 / ((R1 + R2 + R2) * C)
DCP(Duty Cycle%) = (T(h) / (T(h) + T(l))) * 100
