Joulethief SEC exciter and variants

[jonnydavro]

Hi.Here is a vid which looks into how my adapter exciter works.I believe the transistor is switched due to ripple voltage or sinewave inputs including AC.
YouTube - Adapter exciter update and how it works
@totoalas.Very nice.These micro exciters could benifit the UV water sterilisation project and make them fit on a keyring with a UV diode.Thanks for sharing your results.Jonny

[totoalas]

Micro Slayer Replication 3cm & 1.5 cm coil@ 12 v

Hi to all
Ive just replicated Lidmotors jonnys and Gbluer micro set up using 12 v dc supply
coil in a ferrite rod 3 cm and a 1.5 cm ferrite bead from a pc power supply

Great output load 1 8w fl lamp and 40 leds in parallel 12 v dc
3 cm coil 90 to 120 ma output
1.5 cm coil 50 mA output
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thanks again

totoalas

[jimboot]

thanks a bunch @lidmotor @slayer007 & @johnnydarvo I should have shown a pic with ferrite core. The core is 100mm (4") so I'm wondering if the extra mass relative to L2 is having adverse effects. I'm wondering if I should cut it to say 3cm. Also my av plug is using the wrong diodes. I'm just using some schottkys instead of 4148s but I didn't think there wd be an rf field until my in circuit led lit. Ive tested continuity a a lot! It's fine as well as moving the primary all over L2. I'll dbl check my led and I've also reversed the L1 connections a couple of times and the current setup gives me a stable waveform. If swtiched the waveform is all over the place when measuring across the coils.
Thanks again. Johnny re cricket. Phew!

[jonnydavro]

@Jimboot.Thanks for posting those pics,that helps a lot.
First,you need to have a piece of ferrite inserted into the L1 coil which is the 2cm one.It will not work without it.
I think you have the led the wrong way round.Can you check that the anode is on the emitter and the flat cathode on the base.
Check with your multimeter with the battery removed from the circuit for continuity from the open output end of the 2cm coil to the base of the transistor.You may have a bad connection as the varnish on the wire can cause problems.
Leave the output end of the 2cm coil free.Don't plug it in the breadboard.
Make sure your resistor is 22k.Check it with your meter.
Check the transistor is ok
I take it that the white wire in hole 1 is the battery negative and the green croc lead in hole 5,the positive.
The blue wire in line 5 is one end of your L2 coil and the blue wire going to the transistor pin in row3 is the other end of your L2.If this is so then this part is ok but you can try reversing these connections as this can stop it working.
Do you have an av plug led detector for seeing if there is an rf field?
Work through the above and i am sure you will get it going but let us know how you get on and one other thing,I can't stand cricket .Jonny

[Lidmotor]

Scope shot and frequency

@Slayer
The ones that I just built run in the low megahertz range like yours but a little lower (1 to 10). Here is what it looks like:

YouTube - Scope shots of Micro Slayer Exciter.ASF

@Jimboot
You may not have enough turns on that coil. Mine will not work either without the ferrite core on this small a scale. Also try putting the blue wire (primary) in the middle of your secondary coil and bunch the two loops together.

@Jonny
Thanks for the offer to send me that choke but I think that I can track one down locally. I really don't understand what is going on with these exciter circuits but they are great fun to build.

Lidmotor

[slayer007]

Ok I'm using @johhnydarvo last mini slayer circuit. The resistor is 22k. I'm using the MPSA06 the L2 coil is 2cm (3/4") the wire is out of a rechargable torch and extremely fine. I'd say 0.2mm
On a 1.5v battery the I'm reading about 0.5v on the output of the secondary.
pix below. Any help greatly appreciated. I'm simply pluging output of l2 into the breadboard. I've tried 'earthing' it on foil baking dishes but still cn't get the led in the circuit to glow.

Hello Jimboot.


Have you tried tunning your exciter with a piece of ferrite?

Also try a small cap across your power source something 470pf.If you have a varcap around 0-512pf that will work better yet.
And can also be used to tune your exciter.

With my setup I don't use the ferriter but I use the varcap across the power source for tunning.

You may need to try running it on a higher voltage also try 6v-12v.

@ Aaron5120

Great job with your exciter and thanks for posting your results.


@ lidmotor

Great video lidmotor.

Have you tried your scope on the small exciters?

Using the varcap without the ferrite my setup runs 20+ MHZ.
With the ferrite for tunning it runs around 5-6 MHZ.

[jimboot]

Ok I'm using @johhnydarvo last mini slayer circuit. The resistor is 22k. I'm using the MPSA06 the L2 coil is 2cm (3/4") the wire is out of a rechargable torch and extremely fine. I'd say 0.2mm
On a 1.5v battery the I'm reading about 0.5v on the output of the secondary.
pix below. Any help greatly appreciated. I'm simply pluging output of l2 into the breadboard. I've tried 'earthing' it on foil baking dishes but still cn't get the led in the circuit to glow.

[jimboot]

@Jimboot.Hi.Have you got your mini exciter going now,if so how does it perform?If not,can you possibly post a picture of your setup with connections labeled and maybe we can spot something amiss which will get you going.Jonny.

Ok will do thanks Johnny love your vids. Hoping you don't follow the cricket

[jonnydavro]

@Lidmotor.Thanks for the vid .I must say,you were the inspiration for the micro exciter with your earlier ferrite cored slayer exciter,I just miniturised it to a point where it would not work without the ferrite.This is why this thread has been so successful and we should all be proud of the collaboration which has gone on here between free sharing experimenters and this has pushed us all on and lead to the development of these fantatic circuits.This realy is a team effort and i can't wait to see what we will find next .
Regarding yor micro exciter.You should have been a surgeon,you may have been .That coil is the smallest yet as it is thinner than the pencil in your vid.This could actually become a standalone component and with the use of smd components,maybe a slayer module.I wonder if we could use one as a substitute for the transformer in a fuji camera to flash the xenon flash?
The rf field from your micro exciter looks really strong and I have not seen a capasitor used from output to ground like that but it seems to work great and I will try it.
Are you up for trying a 1cm coil?I am pretty sure it will work.
Thanks for trying the wall adapter exciter.I think this works on some kind of ac ripple resonance and I am pretty sure it is part specific which I try to avoid as it makes replication difficult but sometimes it can't be avoided and without the large 10uh choke,it won't work.I have a spare which I could send if you like.Here is the specs.
EPCOS|B82133A5302M|INDUCTOR, AXIAL, 10UH | Farnell United Kingdom
The different voltage in the US may also be a problem but I wish I had a scope and new how to use it and we may identify what is going on here but by adding the cap and the variable resistor,really stabilised things to a point where it could be built into the adapter so you have another switch setting for hv as its lighting neons now.Many thanks.Jonny
@arron.Thanks for trying this and sharing your results .That is a very nice,neat build and you have tried a few different things with the cap and L1b.Can you light a cfl with L1a?Thanks for sharing and your Xee2 circuit replication is most interesting too.Cheers.Jonny
@Jimboot.Hi.Have you got your mini exciter going now,if so how does it perform?If not,can you possibly post a picture of your setup with connections labeled and maybe we can spot something amiss which will get you going.Jonny.

[jimboot]

@Jonny, Slayer, and All
I replicated the 2 centimeter micro Slayer Exciter today. Winding that super fine wire was not all that bad and the build went well. Jonny It worked right away and would slightly light up an FL on 1.5 volts. When I tried 3 volts it really performed well and I made a video of it. Slayer I put that variable pf cap that you have been using between the output of the secondary and the negative rail and it worked great there. I don't know why that position worked so well but it did. At the output I attached my Dr. Stiffler SEC tower with the 27 Leds in series and it lit that up super bright. That setup made a strong excited field around the circuit. All that out of the tiny coil.

Thanks Jonny!

YouTube - Jonny's 2cm Micro Slayer Exciter.ASF

Cheers,

Lidmotor

Great stuff mate. What is the output of L2 connected to? I think that is where I'm having probes. I've tried the foil baking dishes on the floor etc i will get a varicap tmrw but is your l2 just plugged into the breadboard?

[aaron5120]

Xee2 circuit replicated

Hi @all,
Xee2 had posted a circuit using a stock transformer to light CFLs.
I tried the trafo Xee2 used, and also another one smaller, the Tamura Microtran 3FD-210 which also worked.
Here are the photos I took with both variation lighting a 5W CFL. One can get 60 to 70% brightness with 12V at 100mA. I tried a 20W one also, but it is dimmer.
The input voltage is 12V and 6V respectively for the big one and the smaller 3FD.
Smaller trafo saturates easily when I increase the input voltage to 12V, and current consumption shot up.

[aaron5120]

Replication of jonnydavro and Slayer circuit variation

@jonnydavro and Slayer,
I have replicated the mini ferrite circuit with some slight modifications. A MPSA06 was used. A 0~500pF VC was across the Vcc and ground. The other variable cap was across the L2 pancake coil. L1b coil cannot light a CFL, so I hooked the coil to a 20pF cap to resonate. L1a is connected to an AV plug of 16 LEDs. There is a 1nF cap connected from the Base of MPSA06 to one leg of L1a. working Frequency of the circuit is around 1.77MHz.
The circuit consumes 56mA at 6VDC (4 x 1.5V AA bat). The leds were taken out from a camp lamp.
Thanks jonny and Slayer for the circuits.
I enjoyed experimenting with this project.

[Lidmotor]

Jonny's 2cm "Micro Slayer Exciter"---replicated

@Jonny, Slayer, and All
I replicated the 2 centimeter micro Slayer Exciter today. Winding that super fine wire was not all that bad and the build went well. Jonny It worked right away and would slightly light up an FL on 1.5 volts. When I tried 3 volts it really performed well and I made a video of it. Slayer I put that variable pf cap that you have been using between the output of the secondary and the negative rail and it worked great there. I don't know why that position worked so well but it did. At the output I attached my Dr. Stiffler SEC tower with the 27 Leds in series and it lit that up super bright. That setup made a strong excited field around the circuit. All that out of the tiny coil.

Thanks Jonny!

YouTube - Jonny's 2cm Micro Slayer Exciter.ASF

Cheers,

Lidmotor

[Lidmotor]

No luck with "Wall Adapter Exciter"

@Jonny
I wasn't able to get wall adapter exciter to work. We might have a different frequency or wave form over here that keeps it from oscillating the circuit. Maybe my wall adapter is different. I could tell by your video that the plug was different. Anyway it was kinda good to play with it and it made me look waaaaay back in this thread into the early days when you first came up with the pan oscillator idea. I was trying to understand more why these things do what they do. We sure have come a long way since those early days.
I worked more with the tiny Slayer exciter that I built but have not gotten around to winding the super fine wire "micro" coil yet.

Lidmotor

[totoalas]

Micro Slayer NILS one pos input plus body ground

Hi to all
Using 12 v dc pos // neg no connection plus bod ground
I can light neons and av leds by touch
L1a in to base L1a out to neons 30 awg cw 40t
L1b in and out no connection ccw 30 aw 40 t
L2 no connection 5t 23 awg cw
Coil drum used reel of cassette metal tape

can operate only with body ground useful in hiking and remote areas

cheers

totoalas










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