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Post by Casethecorvetteman on Apr 18, 2016 15:53:02 GMT -5
Id be happy to send you a couple faulty quads for sure, PM me your address and ill get them to you  |
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Post by Casethecorvetteman on Apr 19, 2016 8:41:40 GMT -5
All organised, will be shipping a couple out to Jenum soon  |
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Post by hulio on Apr 19, 2016 16:22:56 GMT -5
Sweet....I will pay without hesitation for a super quad.
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Post by Casethecorvetteman on Apr 20, 2016 2:01:16 GMT -5
Me too indeed;)
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Post by dummyload on Apr 20, 2016 13:20:58 GMT -5
@ Case Do you know if the circuit in the quad is the same as the circuit diagram I can't make it out from the photos ,seven diodes and seven caps? I always presumed that it was x4 but looking at the circuit diagrams it is x7 and not x4(quad). If it's x7 the voltage on the caps is rougly 5kv and 10kv (max reverse value) over the diodes so the caps being 10kv is much better then if it would be x4.(roughly 8,7kv over them) Of course the more voltage they can take the better but higher voltage caps means they become bigger, more expensive and a lot more difficult to find. |
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Post by Casethecorvetteman on Apr 21, 2016 2:08:42 GMT -5
Yeah mate there is 7 in there
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Post by dummyload on Apr 21, 2016 5:40:24 GMT -5
Thanks
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Post by Casethecorvetteman on Apr 21, 2016 6:30:04 GMT -5
No worries |
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justin
Junior Member
Posts: 60 
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Post by justin on Apr 24, 2016 21:21:30 GMT -5
hey all, i remember reading a post from the guy on the other forum who rebuilt quads; apparently the first cap in the series is smaller than the rest, eventually causing them all to fail? not just the silicon becoming conductive. he said it was almost like barco did it deliberately (to generate some spare parts revenue?)
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Post by Casethecorvetteman on Apr 24, 2016 23:52:24 GMT -5
hey all, i remember reading a post from the guy on the other forum who rebuilt quads; apparently the first cap in the series is smaller than the rest, eventually causing them all to fail? not just the silicon becoming conductive. he said it was almost like barco did it deliberately (to generate some spare parts revenue?) Ive got one apart on my coffee table, theyre all physically the same size, so id expect theyre all phyically the same. What would be good is if the transformer was in a separate box, would make replacements easier in the future... Possibly! |
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jenum
Junior Member
Posts: 26
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Post by jenum on Apr 27, 2016 9:26:41 GMT -5
The first step is done. I organized new sealings, vanes and oil for my pump. Not that easy for a 30 years old machine. Yeah, it's not the age, it's dissatisfaction of companies to service privat persons. Anyway, next step is to design a vacuum chamber for vacuum potting. This video demonstrate process of vacuum potting very good. Special silicon seems not be needed. Most addition crosslinked silicons have a dieletric strength about 20 kV/mm. Just have to find the right viscosity and hardness. Paper about potting/sealing. If there are >15 quads it will maybe worth asking directly cap manufacturer. But for now reps. the prototyps just any caps who fit specs will be good engough. |
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Post by Casethecorvetteman on Apr 29, 2016 14:18:42 GMT -5
The first step is done. I organized new sealings, vanes and oil for my pump. Not that easy for a 30 years old machine. Yeah, it's not the age, it's dissatisfaction of companies to service privat persons. Anyway, next step is to design a vacuum chamber for vacuum potting. This video demonstrate process of vacuum potting very good. Special silicon seems not be needed. Most addition crosslinked silicons have a dieletric strength about 20 kV/mm. Just have to find the right viscosity and hardness. Paper about potting/sealing. If there are >15 quads it will maybe worth asking directly cap manufacturer. But for now reps. the prototyps just any caps who fit specs will be good engough. And the quads are on their way from Australia to you Cost me bloody $76 Australian dollars to post them!! Hopefully you will have success there and itll be worth all the effort |
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jenum
Junior Member
Posts: 26
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Post by jenum on Apr 30, 2016 11:24:32 GMT -5
And the quads are on their way from Australia to you Cost me bloody $76 Australian dollars to post them!! Hopefully you will have success there and itll be worth all the effort I hope you book first class  |
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Post by Casethecorvetteman on Apr 30, 2016 11:53:59 GMT -5
And the quads are on their way from Australia to you Cost me bloody $76 Australian dollars to post them!! Hopefully you will have success there and itll be worth all the effort I hope you book first class If you have success, its not big deal |
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jenum
Junior Member
Posts: 26
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Post by jenum on Jun 17, 2016 8:19:39 GMT -5
Hi guys, little progess. The vacuum pump takes more time than I thought. Whatever, through the lack of small high voltage capacitors, splitting transformer and multiplier would makes things much easier. The transformer stays in his old position right next to EHT board and the multiplier moves at the side from the brojector. At the side should be engough room for 7x 25x90 mm (DxL) caps. Also the old case doesn't have to be recycled. Makes things even more easier. Transformer and muliplier could be connected through (shielded) high voltage cable. Any arguments against splitting transformer and multiplier?  |
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