ujamerstand
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Posts posted by ujamerstand
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You people with nimble fingers and fearless eyes. I envy you.
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How do you guys get those damn things to stick to your eyes? All of my attempts to jam these things into my eyes failed miserably and always resulted in me wanting to punch something out afterwards. I don't understand how people could have the patience to put them on every morning.
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Those looks like AVX caps, and they seems to be obsolete. Equivalent part from WIMA could be found at mouser. Shipping starts at 8 dollars.
Honestly, you'll probably get more help from amb.org forums. I'm sure if you posted a wanted thread there'll be a builder willing to give you a hand with it. Ask the builder to tie the cables down on cable tie pads to prevent this situation from happening again.
Good luck.
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Well, that was fast. I have no more extras.
For everyone else who wants the PCB, I've posted the board files on the first page. You could also order from batchPCB directly. If you're lucky, you might get 2x the pcbs too.
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Since we don't have more than 15, we can't really accommodate orders for > 10 PCBs. Because of this, I think it's more fair to start fresh, so I'm counting from post #90 and PMs.
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Hi everyone, I'll be taking the PCBs from horio. So I'll be shipping them out.
They are $2.75 each, so I'll probably drop them in snail mail once I get them. That being said, we really have no more than 15 extras. Sometimes, batchPCB's panel would have defect on a panel. In this case, they would mill a new panel and cut out all the good pcbs on the old one. That's why we ended up with 15 extras, it's the number of PCBs we ordered.
I'll let this be first come first serve. Please PM me about it. Thanks.
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Awesome! Looks like it turned out great!
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I should mention this, all the bubble wrap I used for shipping came from blessingx. His liberal use of bubble wraps last time he shipped me stuff means that I won't have to buy bubble wraps for a long time. Thanks Ric!
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Those of you who paid already have a package coming your way.
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could I put soup in that?
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Eh, you mean it's not about collecting parts?
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Keratherm film might be too thin.
I've just been flailing around trying to avoid using the 4171G ceramic insulators, since they aren't expected in to the various stockists until the end of July (nominally). I've been talking to Kevin privately thoughout this as I reasoned things through.
The result of that flailing just resulted in my spending a bit of money and stocking up the spares drawers.
The short conclusion is: THERE IS NO OPTION BUT TO USE THE 4171G!
I tried to use the Bergquist elastomer "alumina and beryllia replacement" with 6kV breakdown, type K10. I sourced insulating bushes with 2.54mm bush length so they went into the heatsink bracket and insulated the screw. Then I spotted the fallacy - there is still a breakdown path from the inside edge of the device mounting hole to the hole through the heatsink bracket - which is just the thickness of the washer away (0.15mm). That limits the potential to 0.15 x 3kV = 450V best case (air breaks down at 3kV/mm). Since the device tabs run up to 630V above ground this is a recipe for disaster. The nonsense is of course that Bergquist supply a TO220 bolt mounting stamping out of this material, which makes a joke out of its 6kV material specification.
The alumina washers that Kevin ended up specifying are 1.78mm thick, separating the device tab and heatsink by that amount. That should hold off 1.78 x 3kV = over 5kV!
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Thanks guys, I looked at the Google labs plugin. It seems like it only save areas that you specified though, so it's not as useful for long distance travel.
We are renting a car, so Tomtom, Garmin and other satnavs aren't really cost effective. besides, how am I suppose to check on HC without data plan?
The T-mobile option looks like the most cost effective option right now, providing there are no system activation fees. Do they sell their sim cards in store? We could probably pick one up locally when we reach Buffalo.
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In a couple of weeks I'll be traveling to the US to visit my sister with my parents. Since we are going by a car, I thought it'd be best if I could get a data plan to help us navigate. It turns out that rogers' Us travel data plan is pathetic, $25 for 15MB, so I'm currently looking for alternatives. I'm wondering if any company in the US offers pay as you go data plan that is not pathetic like rogers?
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I've sorted everything out with the machine shop. Still not billed yet, but I've gotten an exact amount from the manager. The total comes to $1259.59 after tax, So that's $37 per part.
PMs coming to everyone on my list.
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Once I got everything and test fit all the parts I'll post all the FPE files.
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Electostatic amplifiers goes to eleven!
Heh, you noticed.
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... Just noticed it on my panel too. Man, that's an $120 mistake right there. Damn.
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hotdamn. They turned out great! How does the stax jack fit from the back?
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Congrats! It's great we have more DIYT2 units working in the wild now. How many units are we up to right now?
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It's not an issue of whether it is worthy or not, but simply if it is electrostatic.
I would even send grandma over to get measured if she was electrostatic.
Alas, she is in Nicaragua... oh, and she's also not electrostatic.
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Hope you had a good one!
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For the adapter pcb? I couldn't find anything else suitable with high enough voltage ratings. The phoenix screw terminal connector is used on the amp, so I just continue to use them. I really much rather to use something else that will latch on securely though. Do you have something in mind?
They are $2.75 each, so I'll probably drop them in snail mail once I get them. 
The ultimate DIY? A Stax SRM-T2!
in Do It Yourself
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I wouldn't trust the pictures from utsource. You might get something that doesn't look like the ones on the website at all. If it is available at Newark, I'd go with Newark.