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Simple Lc Oscillator Question

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Hi,

Could someone please tell me what components and setup are required to make a simple basic LC Oscillator ? It does not matter what frequency.

I've tried, but cannot get mine to work, I have the following.

1 - 470pf CAP - ceramic disc
1 - Air Coil rated at 20 uH

I'm applying anywhere from 6-12 vdc

Thats it ! just the three components, PWR, Coil & CAP
in a parallel circuit. IT DOES NOT WORK.

It should be Oscillating at around 1.6Mhz, but it does nothing.

QUESTION:

Is some kind of switch / transistor required to make it Oscillate
or is the three components all that is required ?

Does the CAP need to be electrolytic ?
I'm using a ceramic disc.

I'm looking for the basic most simple setup.

Thanks,
-Areal
 

Take a look at:

https://en.wikipedia.org/wiki/Colpitts_oscillator

The main problem is that you need an amplifying device to produce an oscillator. All real components have intrinsic resistance that damped out any sustained oscillations. Even if you can shock excite your system when you attach the battery, it will quickly die out due to circuit resistance.

Now if you could chill the components to near absolute zero, it would self oscillate a lot longer. However, how would you know? Once you attach a measuring instrument you extract energy and just measuring would dampen it out.

You need an amplifying device to add back the energy that is extracted or dissipated.
 

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