New type of vacuum tube

On Thu, 25 Jun 2015 15:22:19 -0700, John Larkin Gave us:

IBM made an eleven Mega-pixel OLED display where each pixel was illuminated by a single fiber from a set of TI micro-mirror chips. All were equal length.

It was several grand in price.. A rare item these days.. One for the museum(s) for sure.

I don't know about the better stuff. I think they are like CPUs. They are only improving by very small increments. I'm not sure the price is dropping so fast these days either, at least not for anything other than huge screens.

What made you think I missed that point?

NT

VFDs work fine as triodes. They _are_ triodes - albeit with split grid & split anode - so kinda hexadecima-triodes :)

NT

the exterior construction is the same. It likely makes more sense for them to make little versions of their VFDs than switch to some other construction. VFD triodes always had the plusses of long life & low heater power.

NT

'are proud to announce the successful development of the ground breaking technology, Nutube, a new miniaturized and high performance tube'

'As with previous vacuum tubes, this newly-developed Nutube is structured with an anode, grid, and filament, and operates as a complete triode tube,'

The VFD-like glass structure is a bit of a giveaway too.

NT

Voltage gain is about 20 on 90v. The grid spacing is very fine.

NT

The construction leads to think that it is plenty more microphonic than a 12AX7 (which was already a nuisance).

On Thu, 25 Jun 2015 22:54:29 -0400, rickman Gave us:

Then you haven't been looking.

Even 4k displays have dropped significantly. You know... the new high res...

Sheesh. wake up.

On Fri, 26 Jun 2015 11:16:10 +0300, Tauno Voipio Gave us:

Mount it on a cotton bed. :-)

nothing wrong with liking a little distortion

NT

That is a good thing in a guitar amplifier, adding harmonics to the otherwise dry electric guitar sound.

For any general purpose amplifier, the non-linear transfer function, in addition to harmonics, also generates nasty sounding intermodulation distortion, which are not harmonically related to the original tones.

it can be good or bad, depending on the distortion

some distortion sounds nasty, some nice.

NT

huh? why use OLED in a DLP based display?

Lotza GOOD ideas! Check potential sales of each and dew some marketing; don't leave the Moses (profit) in the vacuum..

You mean those that require FOUR HDMI drivers? Where the F are the video boards that support that? And more pointedly, ALL 4 at the exact same time (and in synch)? Natch, this pushes the BW requirements to the net sources (if any).

Needs awesome grunting and moaning...

A single CWDM fiber should easily feed a 4k or even 8k display.

A guitar only generates 6 simultaneous tones (bass only 4) and these tones are more or less harmonically rated, thus even intermodulation products fall on some frequencies in the tonal scale.

If you use a single ended stage, which will generate mostly even harmonics, of which the second, 4th, 8th are octaves apart from the fundamental.

Harmonics are generally considered a good thing. In fact the ear bones generate harmonics at high audio levels, thus a harmonics rich sound is felt to be louder.

With a large number of frequencies in a general purpose PA system, some intermodulation frequencies may fall on frequencies outside any tonal scale.

On Fri, 26 Jun 2015 22:44:31 -0700, Robert Baer Gave us:

You are a true idiot.

All modern vid cards drive UHDTV array size.

Damned near all of them. Even the cheaper lines from the major card makers.

More pointedly. GROW THE FUCK UP. Your presumptions PROVE that you spend your entire life GUESSING instead of actually LOOKING at what is in the channel.

You are a child among men with antiquated hardware and an antiquated brain to go with it.

Yes, particularly among those who notoriously and unerringly fail to keep up. Weren't you on AOL with a modem on a POTS line? Or do you need that technology explained to you as well.