super efficient exciter circuit

[jaskro]

Hi all,

I have posted a video on YT where I'm demonstrating an exciter variant that is driving some big LED's and it seems to be extremely efficient.
Exciter variant lights big LED's super efficiently - YouTube

I really don't have a clue on what is really going on with this circuit so I'm posting this and hope some people would like to replicate this and evaluate the results.

Thanks
Jaskro

[gyula]

Hi Jaskro,

The simplest test would be to run your circuit not from the power supply but from - say - 2 series 9V alkaline batteries and see how long they can the circuit operate. Of course somehow you should see the current draw from the 18V battery voltage too so just use a DC multimeter for indicating the input current and control your potmeter to adopt the circuit for the less than 10mA current draw. Use short wires to connecting the DC ampmeter to the two 9V batteries. OF course if you have 12V batteries it is fine also for this test.


Another test possibility is to use a kill-a-watt meter and run your present power supply via this meter from the mains and not directly from the mains as is the case in the video. This way you could see any change in input power taken from the mains whenever you detune your big coil or adjust the potmeter.

Very nice setup!

Greetings,
Gyula

[gyula]

Hi Jaskro,

I guess I may have sounded like I do not believe to my own eyes but in fact I would like to help to figure out the cause for the very low input current consumption.
My biggest 'problem' is to convince myself that the huge electrical field of your coil (running around 2.5 MHz) does not fool the built in current meter of your power supply. Because the peak voltage must be in the some kiloVolt range on the top of your Tesla coil to see that continuous 'arc' at the wire end. So the strong near field from that coil may induce unwanted voltages/currents in the nearby components of the power supply inside the box (this induction may take place in your power supply wires connecting the circuit to the supply output, hence it also can enter harmfully into the suply's circuit). Yes I know the box of the power supply may serve as a Faraday cage but it was certainly not designed to block the fields from a powerful 2.5 MHz 'transmitter' coil.

So this is why I suggested the two things in my above post: somehow make sure your current meter in the power supply shows correct values indeed.

I found a data sheet for a 33V white led from Nichia, I wanted to learn such LEDs self capacitance but unfortunately it was not included at all. This what I found, please confirm if you have the same type, NSBWL110:

http://www.nichia.co.jp/specification/en/product/led/NSBWL110-E.pdf

The reason I look for the self capacitance of your LEDs is to explain why the input current changes too much when you connect such a LED in parallel with the input supply voltage. So if you happen to have a multimeter which can measure capacitors, please disconnect your LEDs from the circuit and try to measure their self capacitance across their legs.

Another test I would like to suggest is to connect either a 10nF or 47nF or 100nF or 220nF ceramic capacitors also in parallel with the input supply voltage at your circuit board where the parallel single LED is tied too. You may have to readjust the control pot or whatever you already found to be tuned to lower the input current.

I will continue my 'ramblings' later when you may come back with some further findings if you do not mind.

I am also aware of the huge reactive power stored in your big air core coil at the 2.5MHz frequency and I may tend to 'believe' this circuit utilizes somehow that power but this needs to be confirmed...

rgds, Gyula

[xee2]

jaskro

Fantastic results. Thanks for the video. If you can get plasma using two 9 volt batteries in series that will certainly be one of the most efficient exciters that I have seen. This should be possible since a 9 volt battery should supply 100 ma at about 9 volts for at least 1 hour (drops to about 6 volts after 5 hours at 100 ma).
http://data.energizer.com/PDFs/522.pdf.

[jaskro]

Hi Gyula,
Thanks a lot for your thoughts and recommendations.

I basically was thinking in the same direction as you do so the first thing I did was measure the amp draw across a 1 Ohm resistor. Unfortunately I didn't get any reading and just adding the resistor completely killed the hole operation.
Because of the violent nature of this beast I was not able to do any accurate measuring whatsoever. I simply don't get any reasonable reading and I'm scared to blow up my new scope
Your idea to use the 9V batteries is something I could to try. Using some supercaps might be even better. Have to get some $$$

With regard to your proposal to try to use the capacitor.
I have tried this with a hole range of of them but I can't get it working. It always results in killing of the operation.
I have a very accurate meter for capacitance so I will measure what the Nichia leds are doing.

I will keep experimenting and I'll keep your recommendations in mind.
I will post another video soon to show you the progress.
Thanks again!

Regards,
Jaskro

[jaskro]

Thanks Xee2!

I'll give it a try soon and post a new vid.

Regards,

[Jiffycoil]

Hi Jaskro,
Could you supply a link where you obtained the various LEDs. I have the circuit built and only need the LEDs to complete the setup .

[penno64]

Hey Jiffycoil,

Have not seen you around in a long while - how are things going ?

Penno

[Jiffycoil]

Hey Penno64,
Been working on a few things. Needed to immerse myself into some thoughts and ideas for awhile. I need to come out and play. This circuit here is an example of what I love about the Energetic Forum. So many creative people here who dont follow the "That wont work" mentality. I have the circuit built and I think I've sourced the LEDs from a vendor in Germany. I look forward to posting my results. I ran my setup today using IN4148 diodes in place of the 2 LEDs and will say that the secondary coil has a plasma discharge at 9 volt 100mA draw from the power supply.

[jaskro]

Hi Jaskro,
Could you supply a link where you obtained the various LEDs. I have the circuit built and only need the LEDs to complete the setup .

Hi Jiffycoil,

I get these as samples through my work but you can get them at leds.de
Probably also with several other distributors around the globe.

[jaskro]

jaskro

Fantastic results. Thanks for the video. If you can get plasma using two 9 volt batteries in series that will certainly be one of the most efficient exciters that I have seen. This should be possible since a 9 volt battery should supply 100 ma at about 9 volts for at least 1 hour (drops to about 6 volts after 5 hours at 100 ma).
http://data.energizer.com/PDFs/522.pdf.

Unfortunately batteries are not so predictable as you are mentioning.
The expected performance mentioned in specifications of manufacturers is far off from reality. I don't think there electronic components out there that are less reliable then batteries

[Jiffycoil]

Thanks Jaskro,
That's the vendor I found also. Time to place an order.

[Zardox]

Can someone post a printable schematic?
I would like to try and replicate it but I can't print it from the video.
This looks promising!

[jaskro]

Thanks Jaskro,
That's the vendor I found also. Time to place an order.

Please be aware that not all types are working in this circuit. I have several types available from the same 110 series and I tried them all of them. Only one is is giving me the amp reducing effect. I forgot to mention which one it is exactly.
I have several other LED cobs from different brands that I haven't tried yet.
So before you start ordering the expensive LED's let me look it up when I get home and I'll get back to you with the details.

Regards,

[jaskro]

Can someone post a printable schematic?
I would like to try and replicate it but I can't print it from the video.
This looks promising!

Sure. I will post it here soon.
I get a lot of questions so give me a little time to set it up. I probably will also post a new video showing some more details and further explanations. Also I'm working on possible alternative components which would make it easier for others to replicate .
TBC

Regards