LM311 LC resonance to inductance

184

02:33:12

Resonance freq to inductance 
========================
When we know cappacitance value, and when we can measure resonance frequency of LC circuit we can provide unkown inductance using formulas:

f = 1/2*pi*(LC)^0.5

for calculate unknown inductance 

L = 1/4*pi^2*f^2*C

you can check how change frequence when measure bigger coil.

published 7 years ago

hurz

7 years ago

No closed loop, no oscillation

wegi1

7 years ago

yes this is a part of circuit. Any uC can send pulse high and low, after that measure few pulses on the output for extract resonance frequency and recalculate it to L or C. I did never build this, only try to check how it work and understand this idea. Thanks to EC where everythings is perfectly show.

kiani

7 years ago

@wegi1 Now after the explanation l am more confused. It is ok if it makes sense for you and you got your answer, but what about us, . You seem ti invite us for lunch and you give us your empty dishes ti wash. ( no offance)

wegi1

7 years ago

Added loop. I'm not sure how it affect to frequency. @kiani I'll add formula in describe hope will be OK. I'm not HW guru just try explore it.

kiani

7 years ago

I think you had a loop ( LC) loop. Csuse yiur intendion is to mesdure inductance using the frequency. I am not a guru either, but mabe we make constructive comments on each other circuit we will become guru. i found writing describtion trying to make others understand it helped me understand better.

wegi1

7 years ago

Added formulas in describe. Next time I'll try put more calrity public project. Thanks for feedback.

kiani

7 years ago

@wegi1 here how i did it, click on the link. http://everycircuit.com/circuit/6055556422041600

kiani

7 years ago

It is a different method to yours, i think yiur method is more accurate, but mine is quick., but not so accurate. Good luck

wegi1

7 years ago

I saw this, l love simplicity but honestly after read comments there is much complicated.

kiani

7 years ago

Yrs it is just a quick way of checking inductance if don' t have any equipment or better way of doing it. It is the poor man' s solution.

add comment in editor

EveryCircuit is an easy to use, highly interactive circuit simulator and schematic capture tool. Real-time circuit simulation, interactivity, and dynamic visualization make it a must have application for professionals and academia. EveryCircuit user community has collaboratively created the largest searchable library of circuit designs. EveryCircuit app runs online in popular browsers and on mobile phones and tablets, enabling you to capture design ideas and learn electronics on the go.