measure the xtal

[Acetronics2]

Hi, Skimask

I'm out on this one ...

I thought at first Savnik wanted to build some kind of XTal "identifying Gizmo" ...

For a Freq meter, I never found simpler than The µChip AN 50 Mhz freq meter :

1 16F84
1 74HC 132
1 Input Fet
1 LCD ...

rather simple. But works fine. ASM program ...of course.


links to clones :

http://www.sixca.com/eng/articles/fc50/index.html

Note their PCB is to re-design ... too close layers in the P.A. section ... I couldn't measure over 7-8 MhZ with their design.

Got 50+ Mhz with a re-design of PCB ...

and :

http://www.sprut.de/electronic/pic/p...quenz/freq.htm


Also simplified ...

http://l.lefebvre.free.fr/freq/freq_01.html

And the last one :

http://www.artra-qrp.com/fp50/fp50.html



Alain