FAQ: Neon transformer wiring diagram - demo fusor

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Richard Hull
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Re: FAQ: Neon transformer wiring diagram - demo fusor

Post by Richard Hull » Fri Aug 02, 2013 3:25 pm

The above will work with any neon transformer ever made. I stated this in the first lines of the FAQ. Read it again.

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Re: FAQ: Neon transformer wiring diagram - demo fusor

Post by Scott Moroch » Mon Aug 12, 2013 1:33 am

I have spent hours searching through the 15 years of history on this forum. I search a certain thing such as "spark plug feedthrough" or "neon sign transformer" and then go through every single post and response. However, I still have a few questions (probably because I am only 14 and this is the first time I'm dealing with this type of equipment).

My first question is how to hook up the 2 diodes in a series? I am probably over thinking it but I just want to be sure how to do it. Second, I'm still do not understand how to hook up the input voltage of a neon sign transformer. It is not a simply "plug into a wall outlet." I posted this same question not too long ago and was told to check the 15 years of history and FAQ's. That is exactly what I did, and yet I am still confused. While I am making this post I just have an unrelated quick question: Is hot glue air tight?

I apologize for these beginner questions however any help at all would be greatly appreciated and help a lot to getting my demo fusor up and running.

Sincerely,

Scott
"In the middle of difficulty lies opportunity"
-Albert Einstein

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Carl Willis
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Re: FAQ: Neon transformer wiring diagram - demo fusor

Post by Carl Willis » Mon Aug 12, 2013 3:44 am

Scott,

I can understand your frustration, but let me be absolutely clear about one thing: Fusors and other line-powered high voltage gear are emphatically not entry-level projects. You are going to need help--hands-on, experienced, adult help--to hook up that neon transformer safely. Our forum is actually full of advice on how to use NSTs, but the discussions assume a passing familiarity with general concepts in electricity, like what a circuit is, how a diode works, how a transformer works, and how to attach a power cord to equipment. The best way to learn those things is not on this forum (because, you're right, they aren't discussed), but under the tutelage of a competent adult.

Please let me know when you have someone to help out.

-Carl
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Richard Hull
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Re: FAQ: Neon transformer wiring diagram - demo fusor

Post by Richard Hull » Mon Aug 12, 2013 4:26 pm

I have deleted the five chatty posts after Carl's well thoughout admonition.

The rule is if you don't have anything to add in the way of correction or new information within a FAQ, please carry your discussion on outside of the FAQ in a new subject post within the relevant forum. FAQs are not a discussion forum.

Carl and all of us have stressed that each newbie be a "self-directed learner in all efforts related to those very elementary and basic things common to simple electricity and commonly understood to most amateur scientists. It is hoped that most attempting even a demo fusor would have a basic idea about simple circuits. A good amateur scientist, of most any age, should have a simple and basic underatanding of materials, chemistry, and electricity and be safety conscious. If he or she enters a realm of more complexity in one of these disciplines then they should head for a good book to bone up as needed. In this day and age, a Google search is often sufficient. Still, learning how to use and acquire a few key reference books for your own scientific library is of signal value.

Good, active amateur science demands you work with both your hands and your head.

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Re: FAQ: Neon transformer wiring diagram - demo fusor

Post by charlie_mccartney » Sun Aug 18, 2013 6:30 pm

Hello Richard, sorry but I am not going to even try this until I fully understand what I am doing. So I have added on and I have had some very knowledgeable people on here telling me that your picture is incomplete so would this be right.

https://docs.google.com/document/d/1O43 ... 4Z-tE/edit
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Richard Hull
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Re: FAQ: Neon transformer wiring diagram - demo fusor

Post by Richard Hull » Mon Aug 19, 2013 5:04 pm

It will work just fine.

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Fusion is the energy of the future....and it always will be
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Re: FAQ: Neon transformer wiring diagram - demo fusor

Post by Charles Vorbach » Tue Dec 23, 2014 6:39 pm

So no special procedures are required when attaching HV wires?

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Re: FAQ: Neon transformer wiring diagram - demo fusor

Post by Richard Hull » Tue Dec 23, 2014 10:17 pm

No, not particularly. They are just wires after all. The basic assumptions are:


1. You have the supply turned off or better still, unpluged!
2. You have selected wire that is insulated to the full extent of the voltage you are going to operate.
3. You can turn a screw or bolt to attach wires or solder them.
4. When routing high voltage wires, you allow pleanty of clearance around other objects and keep all such wiring from ever being touched once in operation.

All of the above is just common sense.

Over 30 kilovolts corona can become an issue and creates its own special remediation procedures. Few who land here ever go into this range as few who land here ever actually do fusion.

Richard Hull
Progress may have been a good thing once, but it just went on too long. - Yogi Berra
Fusion is the energy of the future....and it always will be
Retired now...Doing only what I want and not what I should...every day is a saturday.

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Re: FAQ: Neon transformer wiring diagram - demo fusor

Post by Matthew Michalewicz » Wed Dec 02, 2015 5:51 pm

I have a quick question. For the voltage measuring circuit, why is the 1K resistor so precise? Will a standard 5% tolerance really have that large of an effect for measuring the voltage?

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Richard Hull
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Re: FAQ: Neon transformer wiring diagram - demo fusor

Post by Richard Hull » Wed Dec 02, 2015 7:01 pm

Not critical at all if you don't mind being a couple of hundred volts in error plus or minus. This is especially true with an analog meter, but if you use the digital voltmeter,(3 or 4 digit readout), pay absolutely no real attention to or place no value in the reading of half of the trailing digits.

I had some 1% 10 megs put in series on hand and many 1%, 1k ohms so I used them. The accuracy seemed important at the time. High accuracy in HV measurement on a demo fusor is just not needed, of course.

In real fusion above 20kv, a +/- 1000 volt error in your reading is of really no significance unless one is truly, anally retentive or planning on submitting a peer reviewed paper to a major journal.

Richard Hull
Progress may have been a good thing once, but it just went on too long. - Yogi Berra
Fusion is the energy of the future....and it always will be
Retired now...Doing only what I want and not what I should...every day is a saturday.

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