DIY Temperature Compensated Crystal Oscillators TCXO

[oliverb]

I am building a digital master clock using a 32.768Mhz quartz crystal.

I am thinking about temperature controlling it using an old LCD temp module. Embeding the crystal. rc network and temp probe in a small block of hardwood with a heating element.

This is the problem what do I use as the heater?

I think it would be best run a few degrees warmer than room temp so would a resister work?

I could embed the control transistor in with the resistor heater as well.

Any advice or thoughts appreciated.

Brett.

 

[Mike - K8LH]

Hi Oliver,

I wonder what kind of stability you're lookin' for from that project Sir?

There's a pretty nice little 1-inch by 1-inch circuit board here; **broken link removed** for $15 USD that includes a 10-MHz 1-ppm TCXO and the little trimmer pot', and he even sets the frequency against his rubidium reference before shipping it to you...

Good luck on your project... Regards, Mike

 

[oliverb]

Hi Oliver,

I wonder what kind of stability you're lookin' for from that project Sir?

There's a pretty nice little 1-inch by 1-inch circuit board here; **broken link removed**

Thanks for the info.
1 ppm would be great!
However, I would like to try and build it myself as I have most of the parts from old projects.



Brett.