what is the formula for RC oscillator

[welove8051]

hello all, what is the formula to find the frequency generated for the following RC oscillator circuit.
for r=10k and for c= 470nf i got a frequency of 152hz.


thanks in advance

 

[D.A.(Tony)Stewart]

In your case F= 0.714/RC within reasonable limits for R & C

 

[mjd83]

1/(2*pi*root(LC))

 

[welove8051]

In your case F= 0.714/RC within reasonable limits for R & C

can you provide the link for the formula derivation.

thanks

 

[mjd83]

I don't have a link at the moment, it's just a formula I've remembered over the years. It has a catchy tune if you sing it. Lol
1 over 2 pi root L C equals the resonant frequency.

Enjoy.

Btw. I'll try and dereive it from first principles later on for you.

 

[D.A.(Tony)Stewart]

eh MJ, I never hear that tune but it rhymes,
but looking at the schematic , where the L is the it?