Question
Download Solution PDFThe formula for the frequency of a 555 astable mulivibrator
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFTime period high of 555 timers is given by
THigh = 0.693(RA + RB) C
Tlow = 0.693 RBC
Thus, total time period T is given by
T = THigh + Tlow
T = 0.693 (RA + 2 RB) C
\(f =\frac{1}{T}=\frac{1.44}{(R_A+R_B)C}\)
IC 555:
1) The IC 555 is available in two types of packages, namely TO-99 packages and dual-line package (DIP).
2) It has only 8 connecting pins and it can work at VCC = +5 V to +18 V.
3) The pin diagram is shown below.
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