I created a Phase Locked Loop circuit using Multisim10.0. It uses the Multisim clock oscillator, and the circuit appears to work great.
However, I just discovered that if I use the same parts that I used to create the Phase Locked Loop circuit in an oscillator circuit added to the same schematic, the Phase Locked Loop circuit doesn't work any more, while the new oscillator circuit pumps out a frequency that is way off. 4+MHz is no where near 1kHz, the design frequency.
What happened? The evidence says my newly-added oscillator brings in something that kills a previously working circuit that uses the same old parts. Every part used was taken from the previously working circuit, aside from the variable resistor values. How did the Multisim rules change from 10.0 to 10.1? What am I missing here?
Did the Phase Locked Loop circuit really work to begin with? Which circuit is the broken one?
As I see things, in order to solve this puzzle, I need to come up with a factor that involves both circuits. Some factor is going to kill both simultaneously.
Note what I'm saying here. (At least when I ran them this was the case.) Delete just the oscillator circuit, and run the circuit that remains. It works. Undo the deletion. The oscillator reappears where it was, and the previously working circuit stops working. There's something in that oscillator circuit that kills. It's like switching on and off a light bulb.
When I tried to upload both circuits, the extension isn't acceptable now. Therefore, change the extensions to ms10. (What the frig is going on?? I just uploaded here yesterday and didn't change the extension. Am I in the Twilight Zone or something?)
