05-01-2017, 11:41 PM
It is easier to see if you try it.
A series tuned crystal is almost open circuit to all but its frequency just like a coil and capacitor connected in series. The capacitor is high impedance to all frequencies below resonance. Go above resonance and the coil becomes high impedance.
With a parallel tuned crystal the coil and capacitor do the same thing but in parallel so they almost short out all but the tuned frequency.
The can with the frequency printed on the outside contains a very special tuned circuit that is like a pair of capacitor plates with a glassy dielectric between them that works like the coil.
A series tuned crystal is almost open circuit to all but its frequency just like a coil and capacitor connected in series. The capacitor is high impedance to all frequencies below resonance. Go above resonance and the coil becomes high impedance.
With a parallel tuned crystal the coil and capacitor do the same thing but in parallel so they almost short out all but the tuned frequency.
The can with the frequency printed on the outside contains a very special tuned circuit that is like a pair of capacitor plates with a glassy dielectric between them that works like the coil.
