i had a question about a Crystal oscillator. the circuit i have seen says i need a Crystal oscillator that is 4mhz and conected to two 22pf caps. is there anyother way i can make a subtitution for it.

 

Hello,

For more information on crystal oscilators take a look at this PDF.
http://www.foxonline.com/pdfs/xtaldesignnotes.pdf

Its link comes from this linkpage.
http://www.educypedia.be/electronics/analogoscicrystal.htm

Greetings,
Bertus

 

Do you not like the frequency, or is the component the issue?

 

Is this for a microprocessor/ microcontroller/ PIC?

 

Crystals are used in certain oscillator circuits because they are far more stable and have a much narrower frequency range than a typical RC or LC circuit. If your circuit had anything to do with timing, you would be very unhappy with it's performance if you substituted an LC or RC circuit.