🚀 go-pugleaf

I am working on a circuit that receives a 50 KHz signal from a source 
and is suppose to use a phase-locked-loop and a reference signal that 
it compares the frequency to.   When the frequencies match within 
a given tolerance, one of the pins of the 567 goes low, thus lighting
an LED or whatever.  I would like the advice of ppl who have used 
this chip before and are familiar with its quirks, idiocyncracies, (sp?) 
etc.  The chip has trouble locking onto the incoming signal.  Here
is the circuit:
 

                           In
                           |
                           |
                2.2uf  ---------
		+-|(---|1  3   |
		|      |       |
          .01uf +-|(---|2     8|----- Out
		|      |  567  |
		|      |       |      .02uf
		+------|7     6|---+--|(--+
		|      |   5   |   |      |
                |      ---------   |      |
                |          |      \|/     |
               GND         +----/\/\     GND
                                 10K


I hope the circuit helps.  I would appreciate advice from someone that
has experience with this chip.  Also, I need to give the 50 KHz
frequency at very high pulses, about 10 KHz pulses.  If that won't  
work, that is ok, but I do need to pulse the frequencies at the chip
very fast, it is being used to interface with a PC via the serial 
port.  I have the other support chips, circuits all working well, this
chip is being a real pain.  Finally, the chip will not work at 5 volts
which it is rated to work at, but does seem to work somewhat ok from
8.5 - 9.0 Volts.  Thanks in advance. :)  

-Kip Mussatt

hampster@matt.ksu.ksu.edu  ||  hampster@bohr.phys.ksu.edu
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