Continue to Site

Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.

Help needed with high voltage electronics

Status
Not open for further replies.

freegen

Newbie level 3
Newbie level 3
Joined
Nov 8, 2012
Messages
3
Helped
0
Reputation
0
Reaction score
0
Trophy points
1,281
Activity points
1,301
Hi, I need some help.. I've asked some EE's that deal with radio systems and sound systems but they can't give me a definitive answer.. I'm trying to power a DBD reactor using two different frequencies.. voltage needed is 30KV and amps 1.0mA to 2.2mA . I NEED DC OR AC HALF WAVE RECTIFIED!

I need to generate two different radio frequencies , is this possible with some kind crystal oscillator? I need x6 multiplication for the radio frequencies.. thanks for any help..:)

First frequency must be 9.98kHz or 10 kHz. Second should be 60kHz.. is there a way to modulate the frequency? (I need 6x gap at all times)

Is this possible with flyback tranformers?
 
Last edited:

" DBD reactor using two different frequencies.. voltage needed is 30KV and amps 1.0mA to 2.2mA ". So you need some HV DC and two radio frequency sources? or two HV RF sources? Whats a DBD?
Frank
 
" DBD reactor using two different frequencies.. voltage needed is 30KV and amps 1.0mA to 2.2mA ". So you need some HV DC and two radio frequency sources? or two HV RF sources? Whats a DBD?
Frank

I'm trying for the second.. I want to get both at the same time. DBD is an acronym for dielectric barrier discharge.

Here is a video to see what I'm talking about.. thanks :razz:

 
Last edited:

For two RF sources, there are two ways of achieving this:- one way is to have have two individual "transmitters" connected to the load, with parallel tuned circuits in series with each rejecting the other one. The other way would be to have a wide band transmitter handling both frequencies and feeding the load with a wideband transformer. A fly back transformer will handle 10KHZ but might not handle 60 KHZ due to its inbuilt stray capacity. Also they normally have a tripler following them , so a colour TV tube might need 25KV, while the flyback transformer might only provide 8KV. What you need to look for is a really old colour TV set with only valves in it, because the first generation did not have triplers but a valve that rectified the flyback to produce 25 KV in one hit.
Years ago I worked with Low frequency airfield beacon transmitters that were extremely limited in the size aerial they were allowed (they operated on airfields). So the dummy aerial we used was a 10 ohm resistor with a 100PF capacitor in series. The magic was that we needed large basket weaved coils to resonate this capacitor at 210 KHZ. About 4" diam and 10" long wound with 120 core litz wire with a Q of over 470. The actual transmitter would make 80 watts into a 50 ohm load, but only 10 watts into the 10 ohm resistor. Oh yes, and by the way you could draw arcs of greater then a inch from the coil!!. The 70 watts was lost in the coil. This set up is the sort of thing I think you need but you have the complication of wide band usage, which would make any resonant circuits very difficult to design and especially to construct.
Frank
 
Status
Not open for further replies.

Similar threads

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Back
Top