Plasmatweeter

[Marco audio]

Thanks,but I'm not a rich Man.
I recover old junk to build my plasma tweeters.
I will do like russian people at Nymeria and i work In my kitchen.

 

[Lampie519]

Maybe you could borrow one, no need to buy one. Anyway try to create some safety measures before you power up your new toy!

 

[Marco audio]

Yes,you are right.
My voltage doubler will be insulated ,and i will use a variable power supply.Pictures will come as soon as possible.

 

[Lampie519]

Use fuses with a reset funcion. You will need those. Good luck and share some pictures with us!

 

[Marco audio]

Hello,
i have a new question ,please:
What's the impedance of the electrode?
It's like an antenna ,isn't it?
I can calculate the impedance of RF choke and oscillator coil and capacitance.
But how i do to find the electrode current ?
regards

 

[Lampie519]

This would be difficult to determine as when the plasma is produced the impedance will change plus it is depending on the construction of your device/electrode as well.

 

[Marco audio]

This would be difficult to determine as when the plasma is produced the impedance will change plus it is depending on the construction of your device/electrode as well.

Hello Lampie 519,
Thanks for reply, your help is precious.
Would you like to have a look on my schematic.
Modulation is not drawed. I'm In doubt about L1 and L2:
is L1 enought ?
For me L1 seems the hotest coil.But for all plasma speakers the L2 coil former is build whit ceramic.
If L2 is the hottest of both coil,why?

An externally hosted image should be here but it was not working when we last tested it.

regards

 

[Marco audio]

Have a look too on my voltage doubler:

An externally hosted image should be here but it was not working when we last tested it.

 

[Lampie519]

Yes this L will get hot! Be carefull with C2 !!! It will catch fire this way!!!

 

[Marco audio]

"This L" ?
You mind L1 or L2?Please

 

[Marco audio]

C2:

An externally hosted image should be here but it was not working when we last tested it.

 

[Lampie519]

Both get hot! I don’t understand C3. It should not be there! This should be a choke nothing else. Please see the schematic i have provided earlier.

 

[Marco audio]

C3 is a blocking capacitor. I readed someone here who highly recommand it. 3,3nf @ 35mhz doesn't matter,isn't it ?
And look at the schematic @:
Untitled

 

[Lampie519]

Please check again and again until you see the error!

 

[Marco audio]

Ok Lampie 519,i will search and learn.
Thanks

 

[Lampie519]

C3 is mounted incorrectly. In this way no DC voltage will reach your tube.

 

[Marco audio]

Thanks Lampie 519.

 

[Marco audio]

found this on russian forum.

 

[Lampie519]

It is nice, just a lot of tubes. Try the simple version first as it is difficult enough to get it stable!

 

[Marco audio]

Work In progress:

An externally hosted image should be here but it was not working when we last tested it.