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Your circuit already oscillates.
Only need to good insulated wire for primary winding.

Thanks, I get a better insulated wire and get back to you when I test it again.

 

If there is enough coupling to produce oscillations, given that the secondary is only connected at one end, then consider that any such feedback is a bit different from the presented circuit.
Consider that if the primary and secondary are close enough to arc, then they are close enough for a bit of capacitance coupling, which does not show on the drawing.
So what is the circuit that L Spice claims will oscillate??? I am guessing that it shows a capacitance from the top of the secondary to either "ground" or some other part of the assembly.


AND it seems that if the TS moves those parts around, that the circuit will no longer oscillate.

 

does that mean the coil is working

Yes!

 

So what is the circuit that L Spice claims will oscillate??? I am guessing that it shows a capacitance from the top of the secondary to either "ground" or some other part of the assembly.

See post #1. Inherent capacitance (as I mentioned in post #17) is represented by dotted lines and connects to ground.

 

How can a creation that depends on an unpredictable external capacitance be called a good design???? Especially when it is presented to beginners who may not understand what is missing??

 

How can a creation that depends on an unpredictable external capacitance be called a good design????

I don't see anyone calling it a good design.

 

Before there were few simple HV exciter circuits available for low budget Nicola Tesla experiments.
Like grade school science teacher may have wanted to share with his students.

There was quite an effort in the many windings and design of a slayer coil.
Some showed progress in the circuit design problems using Ltspice.
As time went on the more capable builders solved some of the problems.
By that time other high voltage exciter designs took over.

Hand capacitance being one of the challenges. Modulation and kits became popular for a while.
I give credit to those who began replicating authentic Tesla exciters whereas the small modulated kits also diverged from
the effects that many of the authentic Tesla exciters could produce. It really depends on what effect you are trying to reproduce.

Some experimenters started out wanting to know how a hair pin circuit could do what it does.
Which connection lights two bulbs.
Is the circuit with just one bulb de-tuned compared to two bulbs lit at 3:10 ?

 

Hello everyone, I want to thank everyone because it works! Thank you all for your answer.