My first post so be gentle
I'm following a udemy course in electronics, they ask me to build a circuit and I don't understand why it could work (see below). I think I understand what they want to do, the left 555 set in astable mode sends out a pulse to the right 555 where we vary the PWM. My question is about the left 555. If I use this 555 calculator (I tried a few...) with
R10(/R1): 4.7k,
R11(/R2): 1k
C1/C3: 10uF
The frequency I think this 555 generates is 21Hz and when I connect this to my Osciloscope: that seems to be confirmed. The guy on the course even proudly proclaims that it sends out about 25 signals a second (25Hz)
But as I understand it these servo's require 50Hz so in my simple mind: that could never work. I can't believe that this very well respected course on udemy got that so wrong so I must be missing something. Can someone point me in the right direction?
Thanks
I'm following a udemy course in electronics, they ask me to build a circuit and I don't understand why it could work (see below). I think I understand what they want to do, the left 555 set in astable mode sends out a pulse to the right 555 where we vary the PWM. My question is about the left 555. If I use this 555 calculator (I tried a few...) with
R10(/R1): 4.7k,
R11(/R2): 1k
C1/C3: 10uF
The frequency I think this 555 generates is 21Hz and when I connect this to my Osciloscope: that seems to be confirmed. The guy on the course even proudly proclaims that it sends out about 25 signals a second (25Hz)
But as I understand it these servo's require 50Hz so in my simple mind: that could never work. I can't believe that this very well respected course on udemy got that so wrong so I must be missing something. Can someone point me in the right direction?
Thanks