Bedini Tesla Switch DvD Questions.

[James_Somewhere_In_Idaho]

Gary

Nice! Thank you. I'll bet you, with enough experience, one could judge the condition of the battery, and see how well it is de-sulfiding with that method!

[Gary Hammond]

Hi James,

Hi Gary

I looked at that...and...SWEET! I gota' have me one! Please share the specs on your sniffer coil!

I unwound about 50 turns of #23 and #26 from the very first coil (900 bifilar turns) I got from Rick a few years back. I wound it up on a 3" long piece of 3/4" pvc pipe which was about half the diameter of the coil I was unwinding. So it has maybe 100 turns of #23 and #26 wound together but not twisted. I hooked the two wires in series for a combined total of maybe 200 turns and taped over it to keep it coiled so I could use it as a sniffer coil. It's really pretty crude, but it works well.







In the bottom photo, channel 1 is across one of the main coil windings and channel 2 is across the sniffer coil. The leads to the charging battery are parallel to the sniffer coil windings. You can also run a lead through the center of the sniffer coil, but the signal is much weaker that way.

Notice that the voltage spike across the transistor is a good 20 volts above the battery voltage and the amplitude of the ringing in the sniffer coil is 48.31 volts at 853.66 KHZ.

[James_Somewhere_In_Idaho]

John K & Nityesh

John. Assuming next, I then hook my scope lead to one end and the ground to the other, and then place the core close to the cable?

Thank you both.

[Nityesh Schnaderbeck]

Thankyou John_Koorn for your help and comments.

I turned off everything that could cause interference, smart phone, external hard drive, etc. Except For the computer I am running the scope interface on.

I found out that sharp transients from the environment can also trigger battery ringing. A sharp magnetic pulse can also trigger a sniffer coil to resonate.

Here is another method of monitoring the effect of back spikes on the battery, I thought I would share an old experiment.
The sniffer coil shows current pulses into the battery, while the below method sees the voltage spikes across the battery without disturbing the charging. One method(sniffer coil) sees current pulses and the bellow method sees voltage pulses, it depends on what you wish to do.



Connect the capacitor end across the charging battery, and connect a scope to the coil. You can adjust the signal gain from the number of turns on the coil. Using Litz wire will help, a lot the see the high frequency transients.

Thankyou everyone for your posts

Most
Kindest
Regards
Nityesh Schnaderbeck

[John_Koorn]

Hi Nityesh, I have seen spikes like that on some of my Tesla Switches. But I don't have one running right now.

I do have a Ron Cole Par Switch that is semi operational I can check for you.

@James, if you can find a scrap MWO get the coil out of the turntable motor to use as a sniffer coil.

John K.

[Nityesh Schnaderbeck]

Here is another scope shot, looks like the battery is changing polarity, for a very short time, like a back emf of a coil.



Could it be that this, changing polarity, for a very short time, is showing a type of electricity that lights a reverse biased LED.

It would be good to find out if any one else can get similar scope shots, just to verify things.

Kind
Regards
Nityesh Schanderbeck

[James_Somewhere_In_Idaho]

Hi Gary

I looked at that...and...SWEET! I gota' have me one! Please share the specs on your sniffer coil!

[Gary Hammond]

Hi James,

Hi Gary

Hmmm...you can do that???

Yeah. Here's a link to one of my old posts from my old machine. My newer machine throws much bigger spikes and ringing than the old one. http://www.energyscienceforum.com/al...achmentid=2227

[James_Somewhere_In_Idaho]

Hi Gary

Hmmm...you can do that???

[Gary Hammond]

Hi Nityesh,

That ringing looks a lot like the ringing I get with my SSG on both batteries. When I expand it out, it usually reads 833MHZ on the scope. I assume the frequency is determined by the battery impedance? I use a small sniffer coil to pick up the signal from the battery leads.

[John_Koorn]

Great work Nityesh!

John K.

[Nityesh Schnaderbeck]

jamesgray3rd, Thankyou for your comments. It is amazing, you can see from all the scope shots of the battery ringing, it doesn't matter if it is triggered from stay frequencies from DC-DC converters, or if the "4 Battery Bedini Switch" is having bursts of battery resonances while running, or if I Tap a screwdriver on the output.

The frequency of resonance is always the same.

Very Interesting.

Super Ultra Awesome

Most
kindest
Regards
Nityesh Schnaderbeck

[James_Somewhere_In_Idaho]

Hi Nityesh

Looking good, my friend...I think you are the verge of something.

[Nityesh Schnaderbeck]

I captured some battery ringing with the scope. I set my scope to "Single Shot" trigger mode, set the timebase to 2uS(2 micro seconds), and put the scope across "Batt1" on my "4 Battery Bedini Tesla switch running without a load and this is what I captured, I have captured lots of shots of battery ringing. below is one of them.



If I tap a screwdriver to short the output of the my "4 Battery Bedini Tesla switch" this also causes some battery ringing, as well as flashing the reverse biased LEDs.

So I think that when the batteries resonate the reversed bias LEDs light up, or flash from bursts of battery resonance.

It appears that I am getting bursts of resonances in hits and misses, so I may still have to perfect the switching some more, like match all components(Like matching batteries, etc), and matching the lengths of wire between the 2 sides of the circuit, so the high frequency nodes can be at the right places in the circuit. I may have the experiment the with timing, dead zone, and frequencies of the driver circuit, change component values, change the SG3534 IC, for another one, since the SG3534's are oddball chips and have individual characteristics.

maybe I could design a XTAL(crystal) locked driver circuit to drive my "4 Battery Bedini Tesla switch".

I modified my "4 Battery Bedini Tesla switch", I put thicker wire for the batteries, to reduce the inductance and impedance to high frequencies, and I have spaced the battery cells from each other, so the capacitance caused from the cells being close to each other, is reduced. So this capacitance does not short out high frequencies.



Super ultra awesome

Most
Kindest
Regards
Nityesh Schanderbeck

[Dave Wing]

Hi Nityesh,

I have not worked on the tesla switch for quite some time now and I really do not have anything to offer you... Other than some praise for making good progress in your work... thanks for sharing your results and hard work.

Dave Wing