Hi,

To calculate Q at series resonance, you will need to
ascertain both the effective series resistance and one of
the series reactances (XL or XC). In his Jan/Feb 2002
article "Quartz Crystal Parameter Measurement", Jack
Hardcastle, G3JIR uses a simple test rig and a
mathematical/graphical method to determine both the
resistance and effective series capacitance.

There is an obvious error in the circuit to look out for
though, where an extra series crystal (Y2) was
inadvertently added by the draughtsman.


Cheers - Joe

Oops!

I should have said that the article was in 'QEX'.


Cheers - Joe

"Joe McElvenney" wrote in message
...
Oops!

I should have said that the article was in 'QEX'.


Cheers - Joe



Hi, Joe:

Sounds like just what I need. Thanks a lot!

(Now to dig up the back issue of QEX.)

73,

-vs-

"Joe McElvenney" wrote in message
...
Oops!

I should have said that the article was in 'QEX'.


Cheers - Joe



Hi, Joe:

Sounds like just what I need. Thanks a lot!

(Now to dig up the back issue of QEX.)

73,

-vs-

Oops!

I should have said that the article was in 'QEX'.


Cheers - Joe