1MHz Crystal Oscillator design...Please help

[nikhilsigma]

Hey guys...

I want to make a 1MHz sine wave oscillator...with following characteristics...

1. Frequency : 1MHz.....I have a 1MHz crystal
2. Supply Voltage available : anything between +-12V
2. Voltage swing : 4Vpp peak to peak
3. Load current : 3mA

I have tried to make a colpitt oscillator with n channel JFET....but output at the emitter is very distorded...

please help....

 

[E-design]

What sort of output do you want? Most simple crystal oscillator circuits will not produce a nice sine-wave out.

 

[chuckey]

"2. Supply Voltage available : anything between +-12V". if you really want to reverse the polarity of the supply voltage, you must put a bridge rectifier between the supply terminals and your oscillator, and feed the oscillator out with a capacitor in series.
why not take the output from the drain?, altering the feed back caps might improve things.
Frank