Author Topic: Injector Project  (Read 7740 times)

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Re: Injector Project
« Reply #16 on: January 11, 2016, 02:33:38 am »
I only just glanced over at Mic caps , theyre 1uf , 2kv , so I assume thems the caps you have a pile of .  also theyre oil inside so rugged enough .
I havent got any MOT , I got rid of them so they werent an option laying around . 
considering my own safety . 

Ive had a hit form flyback which is HV DC , not directly but it does find its way across anything , aswell as the insulated screw driver I used!      I see FBT safer than MOT .  nothing I use is wall AC .    Ive seen guys cutting the core of MOT on net , I assumed they were going for gapping FBT and fast discharge .

this sites quite well known in HV circles =  http://www.niell.org/exploding.html

Mine aren't oil filled.

Here's the smaller one:

http://www.goldmine-elec-products.com/prodinfo.asp?number=G20839

Here's the bigger one:

http://www.goldmine-elec-products.com/prodinfo.asp?number=G20235

This is listed as one MFD, but the label says 2 X 1 MFD.

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Re: Injector Project
« Reply #17 on: January 11, 2016, 03:22:03 am »

what a deal !!    especially the red caps

maybe the box caps are for centre tapped coil so theres 2 , one from each leg . I think these are mainly input filter caps .
Ive only seen them in filter circuits .


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Spiral Line Capacitor With Vector Inversion
« Reply #18 on: January 11, 2016, 03:25:50 am »
A spiral line generator is a capacitor which is wound in a spiral, with two sheets of dielectric and two conductors, with connections at both ends.

Quote
In such apparatus where a voltage V is initially applied to the spiral at one end, the subsequent closure of a spark gap switch at the other end will cause a transient voltage to be developed of 2nV, where n is the number of turns in the spiral.

This kind of apparatus can produce voltages up to a hundred times the input, in a single unit.  (No transformer required.)  Rather than using a spark gap switch, semiconductor components, such as Sidacs, are often used to fire the cap when it reaches a predetermined charge.  (I just got a bag of a hundred Sidacs.)  There are quite a few patents in this category.

Here's a link to the first patent:
https://docs.google.com/viewer?url=patentimages.storage.googleapis.com/pdfs/US3289015.pdf

Here's a simple circuit used with HID lamps:
https://docs.google.com/viewer?url=patentimages.storage.googleapis.com/pdfs/US4353012.pdf

Here's a lamp starter with two push/pull strip lines:
https://docs.google.com/viewer?url=patentimages.storage.googleapis.com/pdfs/US4608521.pdf

Here's one which produces a square wave:
https://docs.google.com/viewer?url=patentimages.storage.googleapis.com/pdfs/US4140917.pdf

Here's a HV version (HV in, higher voltage out):
https://docs.google.com/viewer?url=patentimages.storage.googleapis.com/pdfs/US4507567.pdf

Here's a nano second version which uses a step recovery diode that "slams shut":
https://docs.google.com/viewer?url=patentimages.storage.googleapis.com/pdfs/US3764830.pdf

Here's a cheap version which can conveniently be made out of ribbon cable:
https://docs.google.com/viewer?url=patentimages.storage.googleapis.com/pdfs/US4717834.pdf

Here's one which is wrapped around an inductor:
https://docs.google.com/viewer?url=patentimages.storage.googleapis.com/pdfs/US4724362.pdf

I installed some outside building lights at a shopping mall which had this as part of the ballast.  If the wave form were rectified and sent through a bifilar coil, it might provide a cheap alternative to Stan Meyer's 8xa circuit. 


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Re: Injector Project
« Reply #19 on: January 11, 2016, 03:36:20 am »

what a deal !!    especially the red caps

maybe the box caps are for centre tapped coil so theres 2 , one from each leg . I think these are mainly input filter caps .
Ive only seen them in filter circuits .

It WAS a deal.  And I got the box caps on special for $20/100.

Wish I had a circuit for an input filter for my MOT, so it doesn't keep blowing my inverter with my special application.  (I'm tying the MOT's two neutral wires together with a 5 nF cap.)

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Re: Injector Project
« Reply #20 on: January 11, 2016, 13:30:49 pm »
you need varistors and tvsĀ“s

I have build a spiral generator... dint work exactly as i expected... i did the two foil one using two kraft papers of isolation the foils had 5cm or 6cm x 3m than filled on oil i think there was 30 turns or so...... and pulsed .... maybe with an Halfbridge could have worked better.,,, i have tried charging thru a charging resistor and switch direct... 

i want to change to plastic,,, the capacitance was 100nf between the foils...


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Re: Injector Project
« Reply #21 on: January 11, 2016, 13:51:18 pm »
Someone who made it work used different metals in the two foils.  The one in the building lights was pretty thick for the number of turns, like it had hard thick layers for the dielectric.  Or was loosely wound but stiff.  And it was around four inches wide.

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Re: Injector Project
« Reply #22 on: January 11, 2016, 17:39:48 pm »
i used copper foils but also got aluminum as i was planning to make an electrolytic version of it with high capacitance...

Mine i wound on a NI99 core from thornton.com.br its 1 square inch by 4 inches at the end the spiral had around 4 inches diameter..

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Re: Injector Project
« Reply #23 on: January 11, 2016, 19:18:01 pm »
Someone who made it work used different metals in the two foils.  The one in the building lights was pretty thick for the number of turns, like it had hard thick layers for the dielectric.  Or was loosely wound but stiff.  And it was around four inches wide.
most likely the copper should not need to be thick but the dielectric thickness must withstand the charging voltage at least.. but of course greater than this to prevent it from burning anyway,.

i saw one with 3 foils in it.. this should be easier to make work maybe...