Mustafa GÜNES
03652018
ELECTRONIC-2

WHY CRYSTAL OSCILLATOR?

An oscillator is a circuit which procuder an AC signal at some specific frequency. There are three type of oscillator. These are RC, LC and crystal oscillator. Crystal oscillator is better than other oscillator because of its temperature stability and its high quality factor.[1,2]

Frequency of crystal oscillator doesn’t change, with temperature. Because there aren’t R, L and C those values can change with temperature. The other reason is there is quartz in crystal oscillator and quartz isn’t affected by temperature.[2,4]

Crystal oscillator has high quality factor. Q quality factor is about 20.000 values. This value isn’t got with other oscillator.[2]

Because of above reasons are crystal oscillator is used on circuit that is needed high stability. For example they are used on transmitter and receiver those are used on communication. You can used LC and RC oscillator on circuit that isn’t needed frequency stability.[3,4,5]

Bibliography:

[1] Basic Electricity And Electronics, Delton T. HORN’
[2] Electronic Components and Circuit, Robert Boylestad
[3] Electronic-2, Sait Türköz
[4] www.antrak.org
[5] www.silisyum.net