Homebrew 3 Channel Pure SIN Generator ( 0 ... 60MHz )

[Yucca]

A beautifully, extensive play of the mind and wonderful engineering!

Now when you want that device to run free at 60Mhz strap a hamster to the plate. That way you won't be around when it blows up.

Otherwise Saint Peter will be asking you "Well now son, What is that in your hand? You know we don't let that kind of technology in here. We have enough clouds as it is. And it also looks like your brought one of your own?"

--gk.

Cheers GK. I realise I'm covering similar ground you walked many moons ago. Your TPU sings vid is a classic, those sounds are real nice like an ambient track, with suprising complexity.

Lol, I don't plan to do any closing the loop (yet), all open loop with weak fuses.

I'm still wondering whether I should also use faraday cage or maybe I'd be better with a simple tinfoil hat lol?

I can't wait to start exciting some different winds with it. I'll probably play with pure sin first and then add fast comparators and FETs for squares later.

I've watched the vids lots of times and nothing screams fake, also one thing I will say is that the TPU subject is teaching me alot of new things, which is cool!

Yucca.

[Yucca]

Hi Yucca!

Hope your project went on smoothly! Can you update us on its latest progress. Thanks!

Ernest

Welcome to the forum Ernest, I see you registered along time ago so you probably have quite a bit of background reading done already.

To give you and all a brief idea as to what I will be trying first with this box:

I will wind a circular collector loop 6inch diam, it will have a small trimmer cap across it for tuning.

On it I will place 3 collector coils, each covering 120 degrees.

I will excite each collector with different frequencies while sampling the collectors output power and scoping its output.

I don't expect to see COP>1 on this first experiment. But it will be interesting to see the 3D power distribution and if I see clusters of power I may try concentrating on that area and try to get clusters to join up with changes to coil geometry and tuning.

It should be good watching because I plan to make youtube vids of the 3D power structure slowly spinning in 3D frequency space and gradually unpeeling to the hotspots in the centre. I wonder what shape the distribution will be? Spherical, Ellipse, Curved seperate planes, curved lines, straignt lines? hmm?

Yucca.

[BeeSee]

Million thanks for your prompt reply!
I am indeed a newbie and this is my 1st post, though I am a long registered member of OU.com.

My interest is not in the TPU (too advance for me to handle). I am interest to know more specifically how to build your 3-channel Pure Sin Generator. Hope your next video will cover the steps of the construction of this unit.

Will you all the success and Million thanks for sharing your valuable knowledge with us!

Ernest

[dankie]

Yucca , I hope you wont be stupid enough to offer this for free , after all that hard work .

You know theres a potential market for this ...

If somebody can only copy it , then he must buy it .

[giantkiller]

@Yucca,
Good job. This is quite the addition for any future attempts. You will be pleased. I am digging deep into my controller failure. Seems the BEMF or shockwave burned all my outputs of the uproc.
I am writing a program to toggle the output lines in a standalone mode. No usb comm. I am locking this little bugger in a cage and gonna poke it with a sharp stick!
No caveats. But I must relay this bit of advice. I put all my current efforts and resources into this device. Don't have a backup plan as in other types of test equipment to do this type TPU testing. I have shopped and I don't like the pricing behind the LF & HF multichannel signal genny with synchronization capability.
So this controller route is good. Jason did implement alot of safety features. But nothing to guard against user misconfigs, like putting a feedback BEMF at the SSR gate drive that feedsback into the controller with no firewall. And I have a firewall safety that I built 2 years ago sitting there unattached! Argh. In my zeal gained from other builds and tests I ran roughshod over this new build and cataclysmically denied myself the favor of being peaceful in my attempts. So let this be a lesson to ya! I do all the blowin' up stuff here. LOL.
I am in code land and that is very dark and addictive real estate.

--gk.