🚀 go-pugleaf

bender@oobleck.Eng.Sun.COM (memory fault - core dumped) writes:

> 
> What exactly is the failure mode here?  Do crystals go "bad"?  Here's what
> the oscillator circuit looks like:
> 
> 	+-------------------||-------------------+
> 	|                 0.1uF                  |
> 	+--/\/\/\--+                  +--/\/\/\--+
> 	|    330   |                  |    330   |
> 	|   |\     |                  |    |\    |
> 	+---| o----+---+---|[]|-------+----| o---+
> 	    |/         |  24 MhZ           |/
>            LS04        |                  LS04
>                        |    |\
>                        +----| o--------> 24 MhZ out to divider
>                             |/
>                            LS04

Welcome to reality. There is nothing in this circuit to make the xtal
operate at 24 Mhz. If it's an 8 Mhz fundamental, you should expect it
to work there. You might try a series-tuned circuit in place of the
0.1uF but I doubt you'll find any simple way that works well. Best bet
is to get a good circuit out of a handbook and put it's output into
one of the LS04 inputs.


-------------------------------------------------------------------------
                 
73,              lrk@k5qwb.lonestar.org
Lyn Kennedy      K5QWB @ N5LDD.#NTX.TX.US.NA
                 P.O. Box 5133, Ovilla, TX, USA 75154

-------------- "We have met the enemy and he is us."  Pogo --------------