Ξ 3-Mode 2-Stage 555 Clock Ξ

151

01:35:29

Bottom Left Switches changes the speed mode, utilizes different capacitors.

Low Freq Mode:
   0.1456Hz - 2.95Hz 
Med Freq Mode:
   6.84Hz - 138.46Hz 
High Freq Mode:
   1456Hz - 29460Hz

1 NE555
1 NOT gate

R1 = 1k Ω
R2 = 4.7k + (0-100k pot) Ω

C_HF = 4.7nF
C_MF = 1μF
C_LF = 47μF



Freq Formula:

       1.44
------------------- Hz
(R1+2•R2)C

published 2 years ago

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