How to safely increase current from a crystal oscillator?

[truebs]

Amplifier Design

hi ,
i am designing a RF amplifier to be connected to the output of 12 Mhz Pierce cyrstal oscillator, i need to increase the current from my oscillator.

How can i do it without harming my oscillations ?
i am using 2n2222a ,and even after biasing i am not able to produce faithful output .

Any circuit you can suggest ? how can i be sure that my bias is proper (i 've followed the typical textbook approach still coudn't get it right )
should i use OPAMP ?
Thanks !

 

[flatulent]

Re: Amplifier Design

This looks like an application for a buffer IC. These have high input impedance and low output impedance and high output current capability.

Many IC companies make these for driving video lines as one common application.

 

[Borber]

Re: Amplifier Design

Oscillator is usually followed by one or two stages of emitter follower for decoupling purposes and low impedance output (current amplification).