Giantkiller moves forward into Full Heterodyning.

[Feynman]

lol @marco

why use a 555 when you can make a multivibrator out of 12AX7s !!  heheh... I did look into using tubes for the oscillators, and I like tube circuits, but for my TPU research I decided to go solid-state, with microcontrollers and MOSFETs.  It just makes it easier to collect and graph data.


@gk

Thanks for the pictures in the other thread.   I think I understand this much better now.

I will incorporate the 2206 into the microcontroller serial protocol / java application.  we really need to standardize the computer <---> microcontroller interface , so we can all operate on a common open-source application framework even though we are using different chips under the hood.

[turbo]

lol @marco

It just makes it easier to collect .

No Sir 

Actually it is the other way around 

Solid state devices are too slow to find the three major intersecting you know whats...
They also use about a million percent of feed-back to get a clean signal output.
Tube control systems require no feedback to make the units achieve catalyst.
They are stable in themselves!
Solid state devices REQUIRE feedback just to operate into the load of the coiled wire.
The problem is that once the catalyst sequence has started, the feed back obviously changes the perimeters of the solid state units output, shutting down the unit!!!
Now look at a basic electron tube device.
You have one stage of amplification, one stage of signal phase splitting and driving and one stage of power output, all at high voltage low current.
This means FAST! it also means that the feedback for frequency output correction is FAST also.

Etc...

M.

[Feynman]

Thanks Marco

How can you dynamically control the frequency in a tube oscillator across a wide range (say 1khz - 250khz) ?  Can you digitally control it from a computer?  Or are you saying your circuit provides coupled feedback, like a phase-locked loop?

[turbo]

No computer...shit

Just the good o'l stuff.
You can play with the coil , core , or you can change capacitance etc.
I think anybody knows that. 

It is verry difficult to convince people.
I do not know why they are all into solid state.....while we know what should work best.

M.

[Feynman]

I am into solid-state because I want to take a new path, my knowledge is focused in this area. Plus, using a computer, you can automate data collection , automate frequency/voltage graphing, etc.  Additionally, I don't know much about tubes,  I don't know how to build a good tube oscillator, etc.

But I definitely support the use of tubes; whatever works!  I will help with anything that gets us to our goal.   Keep eyes on the prize.