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Everything posted by insanity
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Closed - KGSSHV Carbon and GoldenReference HV PS Group Buy
insanity replied to mwl168's topic in Do It Yourself
Looks like I misread the datasheet of the kemet. Their lifetime seems to be similar.- 419 replies
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Closed - KGSSHV Carbon and GoldenReference HV PS Group Buy
insanity replied to mwl168's topic in Do It Yourself
I actually don't see any point in manufacturing v2 or v3 boards. I think we should just all order v5 boards to get the lowest possible price. A major difference between the KEMETs and the Mundorfs seems to be the lifetime (18000h vs 2000h or 8000h)- 419 replies
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Closed - KGSSHV Carbon and GoldenReference HV PS Group Buy
insanity replied to mwl168's topic in Do It Yourself
What is the advantage of the mundorfs against the kemets?- 419 replies
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Closed - KGSSHV Carbon and GoldenReference HV PS Group Buy
insanity replied to mwl168's topic in Do It Yourself
I also think version5 boards are the way to go.- 419 replies
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Those caps are also known as LEDs
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Nice Soren! How do you get in there if you need to replace a transistor on that heatsink?? Looks quite diffucult..
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Closed - KGSSHV Carbon and GoldenReference HV PS Group Buy
insanity replied to mwl168's topic in Do It Yourself
I noticed another discrepancy on the silkscreen of the fat psus. On one current source there is a 4.7k resistor and on the other it is marked 4.5k. Furthermore the lead pitch of the 5pf/1kv disc caps in the fat psus should be increased to 6.4mm (same as in the amp boards).- 419 replies
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Closed - KGSSHV Carbon and GoldenReference HV PS Group Buy
insanity replied to mwl168's topic in Do It Yourself
I just noticed that the 787k resistor on the bias section of the fat board has been relabeled to 806k. On my KGSSHV build, I used a high voltage resistor for that spot. Mouser doesn't sell any 806k resistors with voltage ratings above 500V. Is a 500V resistor ok?- 419 replies
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Closed - KGSSHV Carbon and GoldenReference HV PS Group Buy
insanity replied to mwl168's topic in Do It Yourself
Could someone specify the transformer requirements (current) for the carbon 400V (=standard) and 450V?? version? 2x xxxVAC ...mA 16-0-16VAC ....mA I think I should mention that I am refering to the new GR HV PSU.- 419 replies
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Closed - KGSSHV Carbon and GoldenReference HV PS Group Buy
insanity replied to mwl168's topic in Do It Yourself
So what kind of regulators do you use?- 419 replies
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Closed - KGSSHV Carbon and GoldenReference HV PS Group Buy
insanity replied to mwl168's topic in Do It Yourself
I found an older post in the kgsshv thread stating the stm negative 15v regulator needs to be put under load to work properly. Furthermore I think Birgir has been using these isolated version for some time now and has not reported a problem.- 419 replies
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Closed - KGSSHV Carbon and GoldenReference HV PS Group Buy
insanity replied to mwl168's topic in Do It Yourself
Yes I was just going to ask if you put it under load.- 419 replies
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Closed - KGSSHV Carbon and GoldenReference HV PS Group Buy
insanity replied to mwl168's topic in Do It Yourself
checked and added 2 LVsingle boards- 419 replies
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Closed - KGSSHV Carbon and GoldenReference HV PS Group Buy
insanity replied to mwl168's topic in Do It Yourself
Please note that the spreadsheet is not editable.- 419 replies
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Closed - KGSSHV Carbon and GoldenReference HV PS Group Buy
insanity replied to mwl168's topic in Do It Yourself
I am open to either the v2 or v3 version. If I could choose I'd prefer the better servo. My entry in the list is correct.- 419 replies
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Good point s_r. I didn't not yet realize that the 680uf are actually 80mm tall. The 470uf are "only" 60mm.
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Closed - KGSSHV Carbon and GoldenReference HV PS Group Buy
insanity replied to mwl168's topic in Do It Yourself
I have done a preliminary BOM with some spare materials, but I estimate the mouser parts alone without spares would be around 300+ dollars. Let alone the PSU Caps are 4*40 dollars.- 419 replies
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Closed - KGSSHV Carbon and GoldenReference HV PS Group Buy
insanity replied to mwl168's topic in Do It Yourself
I would also opt for the fat version and change my GB wish to: 2 sets of amp boards, 2 sets of splitpsu (fat version) @mwl168 It will be a long time until I use my kgst boards. They are just as a backup.- 419 replies
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The Led seems to be the same as usual: 859-LTL-307ELC
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Closed - KGSSHV Carbon and GoldenReference HV PS Group Buy
insanity replied to mwl168's topic in Do It Yourself
IMHO the fat version of the PCB looks very interesting and opens new options for the case layout.- 419 replies
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There are also isolated versions of those regulators available from mouser... http://www.mouser.ch/ProductDetail/STMicroelectronics/L7815CP/?qs=sGAEpiMZZMuLLNXTG1MZairwzCPaUz3f5oHn6KFuv5w%3d
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Is this the correct part for the tantalum cap in the psu? http://www.mouser.ch/ProductDetail/AVX/TAP476K035CCS/?qs=%2fha2pyFadui71WG8SrZyHASq76qCrPj52xoQTMHd5BCDxIOadHKMAA%3d%3d Never bought a tantalum cap before, but quite expensive... Which heatsink is recommended for the 7815/7915 combo? http://www.mouser.ch/ProductDetail/Aavid-Thermalloy/531102B02500G/?qs=%2fha2pyFaduh5%2fZtDq%2fcwTRGN9T%2fczmwSyk%2fScPY%2fv0hYslkXdMgYig%3d%3d Is this one fine? Length is 1.5inch. Or is 1inch also sufficient?
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Closed - KGSSHV Carbon and GoldenReference HV PS Group Buy
insanity replied to mwl168's topic in Do It Yourself
4 Amp boards, 1 dual psu board and 1 of each left/right psu board. @mwl168 I have heard from sorenb that there were some quality issues with the kgst boards from the recent GB. I cannot comment on this, because I have not used my boards I got from this GB yet. Therefore the question: Will you be using the same manufacturer or anonther? I think for an Amp such as the Carbon higher quality PCBs could really be justified, even if it adds a bit to the cost.- 419 replies
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I have some question concerning the SIC Psu What is the rating of the 330pf caps? 1kv? Why do the 500k bleeding resistors need to be so big? Is it just because they need to be rated more than 550v and nothing but the 3w is available with such a rating?? Furthermore I wanted to ask if there would be any noticeable benefit in using the goldenreference LV supply instead of the tight and small standard LV supply?
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I was just thinking about the orientation of the boards in the case. How much heat is generated by the PSU board? Is it similar to 1 amp board or significantly more/less?. From eyeballing it would just fit to put the psu and one amp board on one side and the other amp board on the other side. This would give us more space in the middle/front part of the case. But I don't if this is a good idea if it results in significantly different temperature of both heatsinks/amp boards. I am dreaming about an rk50 in the middle behind the front panel... Furthermore I have a question about the shoulder washers used with the bigger ceramic pad for the to247. Which ones do you use? The holes of the bigger ceramic pads are also a bit bigger.