Dr Ronald Stiffler SEC technology

[Slider2732]

uV - That's a very interesting point about the frequency being halved.
The WTF Exciter stands for What's The Frequency ? a play on letters of course but relating to the thing having no crystal.
So what frequency is it running at ?
It turns out, that it's running at approx 6.67MHz-6.72MHz, as detected with the sniffer coil.
Doubled, that is 13.34MHz to 13.44MHz...very close to the range being looked for.
I may have all that backwards or upside down, but it intrigued when thinking about what you wrote and I wanted to find out the frequency anyway.

[erfandl]

Well there must be some power used by the circuit and one might think the crystal would use some...so try taking the crystal out.

That's what I did, along with changing the 1K resistor to a 1000uH axial inductor, following Lidmotor's lead.

Ladies and gents, we have a new Exciter circuit.
https://www.youtube.com/watch?v=QE4uvw1JBb0

Hi slider thanks for share. is this point in the blow picture must be connected together ?

[shylo]

Hi All,Very interesting stuff, I'm not sure of the proper term for the load on that coil that Lidmotor moves around and lights the four led's, but thequestion I have is can you make several of those and they will all work at the same intensity?If yes ,can the led's be replaced with a cap?So if you had 20 of those ,could the now charged caps be used to drive the original circuit?Great work thanks for sharing.artv

[Slider2732]

erfandl - Yes, that point is connected. I should have put a dot really to denote.

shylo - Most often the answer is yes, to a point. Those 4 may be the max but quite often another could be made and they all have that intensity. Then if a 3rd such load is made, all 12 LED's would dim down by a noticeable amount. Quite often there are demo's of a bank of say 40 LED's all glowing brightly from an Exciter, the thing being that number 41 may begin the dip. It's about the amount of RF being utilised and a maximum draw point that affects all loads.
I like the idea of the caps...unused energies could periodically dump with some kind of zener circuit (as sometimes seen on Bedini SSG's) back to the input. It would then work as a harvester if tuned to that max RF usage point.


I tried the WTF (What's The Frequency ?) Exciter up to 20V last night.
It does best at 12V for noticeable improvements, being able to use the Doc's clip lead technique to gain a large area of field energy.
Today is going to be about changing the 'L3' for better running of the DT mains bulb and looking into how much of a frequency change can be derived from that coil with different turns amounts.
Another will be made as a fresh build, using a replaceable axial inductor too.
Interestingly, at the moment this circuit sits between several other Exciter circuits for initial frequency range. SWES and other pancakes tend to run at about 500kHz, Slayers tend to run at around 2MHz, this one is at 6.7MHz, then we have the Doc's 13.6MHz. 
I also think the LED in the feedback to the Base of the transistor will function similarly to the indicator of field strength LED of Slayer Exciters. At 12V it's always on and might vary with tunings. But one function is that it's protecting the Base with the light output.

[mikrovolt]

slider, since batteries slowly go down we specify builders many times get hung up on less obvious.
It does demonstrate crystal oscillator used when there is no signal generator around.
Someone building wtf might review feedback so it becomes obvious:
https://www.electronics-tutorials.ws/oscillator/colpitts.html