hello everybody
i hope all of you are fine
i wanna know how to get the equation of the frequency of the square wave
i understand how the circuit work but i can't get the equation
i use ne555 ic
the equation of the freq. is
1.4/((r1+2r2)*c)
thanks at all
Consequently, if the timer operates in astable, the period is the same with
'T=tH+tL=0.693(RA+RB)C1+0.693RBC1=0.693(RA+2RB)C1' because the period is the sum of the charge time and discharge
time. And since frequency is the reciprocal of the period, the following applies.