NE555P Precision Timer

used products:

1. 1 KΩ
2. 2,200uF
3. 470Ω
4. NE555P

content:

https://www.youtube.com/watch?v=WqGq9Yv1d_U

R = Resistance

C = Capacitor

t = Time

f = Frequency

thigh
tlow
2,200uF Capacitor = 2,200*10-6 = 2,200 = 2,200 = 0.0022 Farad
106 1,000,000
f = 1 = 1 =
1
0.693
= 1.44 = 1.44 = 1.44 = 0.44526901669759 Hertz
t 0.693*(R1+R2)*C1
(R1+R2)*C1
0.693
(R1+R2)*C1 (1000+470)*0.0022 3.234

thigh = 0.693*(R1+R2)*C1 = 0.693*(1000+470)*0.0022 = 0.693*1,470*0.0022 = 2.241162 second

tlow = 0.693*(R2)*C1 = 0.693*470*0.0022 = 0.716562 second

ttotal = thigh+tlow = 0.693*(R1+2R2)*C1 = 0.693*(1000+2*470)*0.0022 = 2.957724 second