LC Oscillator

301

08:08:54

Generates a 268MHz signal with 9.78 peak to peak voltage. Make sure oscilloscope is set to 20ns, you can tell an oscillator is working here when you see the range value increasing, it shouldn't take long to start!

published 1 year ago

schmobi2001

7 months ago

Nice one. I have built this with almost exact values. I had to remove that 100 nF cap, because the output on the oscilloscope Was distorted. Without it, i get a nice clean sine wave.

schmobi2001

7 months ago

One question I would like to ask is, how you calculate the resulting frequency here. XL = X. 2ℼfL = 1/ (2ℼfC) fr = 1/ (2ℼ √LC) does not seem to work accurately here.

BraydanD

7 months ago

Hey, its great that you built this circuit, I have heard and seen other people build similar circuits and not have that 100nF base capacitor and it works for them, but whenever I have tried it didn't work. How you calculate the resonant frequency I have no idea, i have tried the series and parallel capacitor formulas to obtain an equivalent C value but the results were never even close to the measured value, sorry I can't help with that one.

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