Hacker News new | past | comments | ask | show | jobs | submit login

This sounds great. But I first heard of these guys last year around this time when they announced their "NAWACap Ultracapacitors" where you could get a 1000F capacitor with a .1 mOhm ESR @ 1kHz. That was when they announced they were in production. So I reached out to the various distributors I used and put in cash-ok sample request[1] for one. Not a peep in 10 months. It is entirely possible that someone came in and said, "We will buy every capacitor you can make for the foreseeable future." but that generally results in causing the manufacturer to ramp up capacity to maximize revenue until there is excess capacity :-).

So what is the deal? Can they build stuff or are they a bunch of scientists who can get something working in the lab or one-off and fail miserably at making it a product? (They would be in good company to be sure if this were the case, just it helps to be a bit more forthright about.) The other argument against the hypothesis that someone is buying everything they build is that they have yet to show up in the Thomas register[2]. If their entire capacity was booked they would have quite the revenue stream.

You can of course buy carbon nanotube arrays[3] made to order, the last time I checked (about 2 years ago) they were over $5,000 qty 1. So not something I'd make into a general availability product. But if the NAWA guys can actually print these sheets with no trouble at all maybe Aldrich could use them as a supplier and get the price down to something more accessible?

I'm really interested in a reasonably high voltage (say 48V+ super capacitor in the 800 - 1000F range) even better if it weighs less than 50 lbs. But I've got a railgun out back that doesn't do squat without a 500kW power source.

[1] Basically this is saying you're willing to pay list price for quantity 1 to get a sample, as opposed to demanding a free sample which involves lying about market opportunity :-)

[2] https://www.thomasnet.com/articles/top-suppliers/capacitor-m... These guys basically have teams of people trying to figure out where to get stuff, so they usually know who is actually shipping.

[3] Get your own carbon nanotube array, 1 x 1 cm https://www.sigmaaldrich.com/catalog/product/aldrich/687812?...




Guidelines | FAQ | Lists | API | Security | Legal | Apply to YC | Contact

Search: