555-ic-astable-1000hz.asc
Tag: 555 timer IC
555 IC Formulas
## Astable waveforms
Charge time (output high)
t1 = 0.693(Ra+Rb)CDischarge time (output low)
t2 = 0.693(Rb)CTotal period
T = t1+t2 = 0.693(Ra+2Rb)CFrequency of oscillation
f = 1/T = 1.44/(Ra+2Rb)CCalculator written in C for the 555 timer IC
+5 ---+---------------+---+
| | |
R +----------+
| | 8 4 |
+---+------+-----|7 3|------/\/\/\---+------- Vout
: | | LMC555 | |
C to test +-----|6 | -----
: | | -----
ground +-----|2 5|----+ |
| | 1 | | ground
| +----------+ 0.1 uF
| | |
Clock ----+ ground ground
^
I needed a quick calculator for the 555 chip and decided to write one in C. Enjoy.
Read more “Calculator written in C for the 555 timer IC”