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555a.png icon

555 as an astable multivibrator

You can use this calculator in two ways:
  • to analyze multivibrator circuit you need to fill all the fields within the top-left cell and click [Compute timings] button
  • to synthesize the multivibrator circuit you need to fill all the fields within the top-right cell (chosing adequate units and parameters) and click the [Compute elements] button
NOTE: duty cycle (DC) must be > 50%!
More details here.

Circuit analysis:

R1 = 
 

R2 = 
 

C = 
 

Circuit synthesis:

f/T = 
 

DC = 
 

C/Rx = 
 

Results:
automatically select units

R1 = Ttotal =
R2 = Thigh =
C = Tlow =
f = DC = %


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[ekalk]© Sławek Wernikowski, 2012-2023. Set of useful interactive calculators for electronics constructors and hams.


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[N4.01 2023-09-05][]