EveryCircuit - Accidental sine wave

9 years ago

Oscillation not sustained, you're just seeing the transient responce of the LC tank circuit, which disappeares pretty quick. Here is a working one with minimal compenents, http://everycircuit.com/circuit/4543738120765440

hamilton1300

9 years ago

Did you inject noise?

rich11292000

9 years ago

Scope the wire under the inverter gate to see the voltage decrease. The opamp isn't helping.

thebugger

9 years ago

Typically oscillations are very easily excited. Problem is, they quickly decay if not sustained by some sort of an external energy source. Good thing though is that oscillators are very common devices. In fact they are so common and simple, that amplifier designers employ some very aggressive methods to keep them from oscillating. The slightest stray capacitance, or a rolled off RC (or LC) filter can make an amplifier oscillate. Every thing in the Universe, has a self resonance frequency, and with the right push (literally), it can create sustained oscillations.

hurz

9 years ago

Buggzy, your comments are so funny "that amplifier designers employ some very aggressive methods to keep them from oscillating." http://everycircuit.com/circuit/5270101440856064

hamilton1300

9 years ago

Good to hear from Buggzy and hurz

hamilton1300

9 years ago

@hurz are you ever on EC users anymore?

thebugger

9 years ago

I don't get your problem now, but I've learned not to care what you say, so yeah whatever

thebugger

9 years ago

And yes, some amplifier designs use very aggressive methods to prevent oscillations. If you know your tube amps, you'll notice many many subtle methods that prevent them from oscillating, especially when there's an output transformer involved

hurz

9 years ago

21years old and having 30 years of expirience in amplifier and RF designs and talking about "agressive methods" LOL. Yes, and in case you publish bullshit you just learned to be stubborn for any input and critic. Here an example of your "agressive methods" http://everycircuit.com/circuit/5209381348311040 nice oscillating amplifier you designed there! Could you probably stop pulling that shit out of your a$$ while you are still learn what electronic is all about.

thebugger

9 years ago

You know what? Fuck you, you piece of shit! I and probably every other user in this app is absolutely fed up with your crap. You're the most obnoxious, bickering, grumpy person in the EC community. If everyone else is taking your shit, I ain't. So keep your unnecessary opinion to yourself and stop spamming, ok? And what I said Is absolutely true, and If you weren't as little of a person as you are, you'd agree. I can't deal with your shit anymore

thebugger

9 years ago

And P.S. The circuit you so obnoxiously keep referring to, is over 2 years old, and is not an amplifier guide. It's a feedback guide.

hurz

9 years ago

Yes, its a "bullshit guide" you published, I agree.

thebugger

9 years ago

Imbecile

hurz

9 years ago

Its a bullshit guide, cuz you followed its instructions but you endup with an oscillating amplifier. Right, 19years old and 40years expirience. Imposter.

thebugger

9 years ago

Except it wasn't an amplifier guide ;)

hurz

9 years ago

Sure, it is suppose to be an amplifier which you messed up with all your feedbacks which you fully understand in theorie (funny to read your comments there) but unfortunately its now a oscillator. Do not blame others for your fault. Change the headline to "stubborn oscillator guide".

thebugger

9 years ago

I don't blame others. Just shut up, you can't be more pathetic. Like the time you were bickering about whether it's KHz or kHz. I don't care, I'm gonna write it as I see fit. If you can't deal with it, it's not my problem

hurz

9 years ago

Its your fault, being an imposter, not ours.

hurz

9 years ago

Only as information in case you ever have the pleasure to work with expirienced engineers. k is 1000 and K is in computer science 1024 which is 2^10. Yeah, but mess it up as you wish in your virtual world. But please never work in an sensitive areas e.g. aero space industrie of automotive or boing/airbus. Stubborn people like your are respossible for airplane crashes. Thanx for you ignorance, but keep it as hobby.

thebugger

9 years ago

Ok your majesty. I can't believe there are people as arrogant as you. Very disgusting quality