This technique is now widely used in the tiny digital signal processing techniques, cheap, high quality receivers using no resonant circuits at all are now possible.
42.
Thus, each cavity formed its own resonant circuit, the frequency of which was defined by the energy of the electrons and the physical dimensions of the cavity.
43.
A band-pass Butterworth filter is obtained by placing a capacitor in series with each inductor and an inductor in parallel with each capacitor to form resonant circuits.
44.
A band-stop Butterworth filter is obtained by placing a capacitor in parallel with each inductor and an inductor in series with each capacitor to form resonant circuits.
45.
Foster's realisation has the advantage that the poles and / or zeroes are directly associated with a particular resonant circuit, but there are many other realisations.
46.
Like the RCA system, the signal is recorded on the discs as variations in capacitance, a conductive coating on the disc itself forming part of a resonant circuit.
47.
Important merit of the matrix \ mathbf M is the fact that it allows to directly compute the frequency response of the equivalent network having the inductively coupled resonant circuits,.
48.
Another advantage is that resonant circuits interact with each other so much more strongly than they do with nonresonant objects that power losses due to absorption in stray nearby objects are negligible.
49.
This varying capacitance in turn alters the frequency of a resonant circuit, producing an FM electrical signal which is then decoded into video and audio signals by the player's electronics.
50.
They are used in place of resonant circuits at microwave frequencies, since at these frequencies discrete resonant circuits cannot be built because the values of inductance and capacitance needed are too low.
