Phase Locked Loop

[AhuraMazda]

@bolt
I don't believe there are any exact frequencies. each and every coil is unique. If there were any exact frequencies, I would wait till you come up with it!

AM

[giantkiller]

No need to worry about PLL at this time as no one has yet seen anything that resembles extra power.  Wait till you get a big bang then quickly write down the frequencies and then worry about PLL later

Will I survive the blast long enough to be coherent? Or will my coherency shift to another plane?

--giantkiller.

[angryScientist]

I fried my PLL the other day. It was a result of having another datasheet in mind when I was hooking up power. The chip was not rated for 12Volts.

I'll put in an order to get some 18Volt chips.

No need to worry about PLL at this time as no one has yet seen anything that resembles extra power.  Wait till you get a big bang then quickly write down the frequencies and then worry about PLL later Smiley

That is why I think the PLL could be useful. It could lock right on to the right frequency, depending on the physical location of the pickup coil on the toroid.

The frequencies will be higher with the smaller cores.

Diameter of coil times Pi gives the length of the coil (for one loop)

Speed of light / wave length = frequency
*( The speed of light through copper is about 94% the speed of light through a vacuum)

I'm thinking it would be easier to reach the harmonic wave length of the coil if the coil where bigger. Oh well, we'll see.

[angryScientist]

I just got my order from mouser. I tell ya I am beaming. I can see that my workbench is a mes. I guess I'll have to clean up a bit befor I can get started.

[angryScientist]

Well here is where I'm at.

Like I said before, I received my new PLL's. I also got a few decade counters at the same time. (MC14046BCPG and MC14017BCPC for the recored)

I built my frequency generator. It worked as expected. Here is a brief description;
I took the output from the VCO section and fed it into the frequency divider section. I used two decade counters in series for an effective divide by 100. I fed the divided signal into one side of the comparator section. Into the other side of the comparator I fed a frequency that I generate with my SX microcontroller. The PLL locks onto the microcontroller signal but is 100 times the frequency.

So I have my little frequency generator with digital push button control. Cool cool.

But, (there is always one of those) it will only go up to 1.2MHz. Way, way too slow for smaller TPU's