- #1

The Tortoise-Man

- 95

- 5

Althought it is closely related to the discussion here discussion here (especially Baluncore's contributions) I think that it requires to be discussed in separate manner on it's own right since here I want to focus of general ways and possibilities to determine Q factor of oscillating system whichs slightly exceeds the complexity of usual serial and parallel

RLC- circuits (see explicit formulas here: https://en.wikipedia.org/wiki/Q_factor#RLC_circuits )Baluncore wrote in #3:

And my question is just how to check mathematically that the Q of heavily loaded tuned circuitWhat you call a matching box is actually a resonant tuned circuit

that selects the frequency you want. If the tuned circuit is too

heavily loaded, it will have a lower Q, so less sensitivity and

less selectivity.

has indeed a relatively low Q. That might intuitively make sense, but sometimes require an exact

calculation. And my question is how to perform it. I nowhere found any techniques, only for

elementary cases of RLC- circuits as I said before. Are there methods for more complicated

circuits known?

For example which formulas & techniques for calculation of Q were used here in the case of regenerative receiver in the linked thread but also for general loaded tuned circuits to analyse the behavior of their Q in dependence of the parameters (resistence, reactance) of added load. Although this problem seemingly arises quite naturally, I nowhere found a formally clear approach from mathematical point of view to calculate Q in such

situations.

Could anybody give maybe a kind of overview how to calculate to Q

of a loaded tuned circuit in dependence of the

load?