And for a bonus point: what class osc operates in
Well it certainly ISN'T class C
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And for a bonus point: what class osc operates in
Well it certainly ISN'T class C
Why do you say that?
Because class C is biased past the point where the device is cut OFF completely - the example shown is biased ON a good amount.
So? Are you saying it's not oscillating in class C ?
The 'class' is a static measurement, if it's in class C it can't start oscillating, as it passes no current whatsoever.
So is it oscillating in class c or not?
How can it?, class is a passive mode, not an active one - and the circuit isn't in class C or anywhere near it.
You're just talking complete rubbish.
How are you so sure of this? Have you ever built (or at least analysed) this circuit?
What's to build or analyse?, the circuit isn't biased in class C.
You appear to be nothing but a troll, and keep repeating the same rubbish - I warn you now, I'll be keeping an eye on your future posts, and also looking back over your previous ones.
Whether you're right or not doesn't matter, just try not to come across as being cocky and smug.Accusing me of a 'Troll' does not change the fact that it is a "Class C oscillator".
cocky and smug
I thought that circuits were classified by their operation after they stabilized, and with signals applied. If this is wrong, I would gratefully accept enlightenment.
Where does the reverse-bias for the varicap come from if it's not self-biased in Class C?
1942 definition of Class C: "The Class C Amplifier is an amplifier which the grid bias voltage are such that the Plate current flows for considerally less the 180 degrees of cycle" https://www.electro-tech-online.com/custompdfs/2009/07/0017-1.pdf
Anyway, if it wasn't operating in Class C, the fet would get hot, probably fail. And the varicap wouldn't be reverse-biased.
If it took a 'troll' to notice one person after another condemn the OP circuit as 'wrong', maybe we need more 'trolls' on here?
**broken link removed**
prove it's a 'good' circuit, which it probably isn't anyway.
Because this thread has been primarily about: "where does the reverse-bias for the varicap come from, if it's not self-biased in Class C?"What has class C got to do with it?.
Definition of Class C agreed. Good. Found some common groundSounds a fine definition to me,
Denying the evidence of Class C operation doesn't make it 'go away'....and proves that the oscillator isn't class C. <..> not going to be class C as it doesn't meet your 1942 definition, or my more universal one.
Class C Oscillators "class c oscillator" - Google Search operate in Class C, and this is what makes them run colder than Class A oscillators. Because Class C means: 'biased beyond cutoff', is where the varicap gets its reverse bias.Class A amplifers don't usually get hot, which almost all (if not all) sinewave oscillators are - you certainly don't want them hot, for stability reasons.