On 11/11/18 4:17 PM, DecadentLinuxUserNumeroUno@decadence.org wrote:> Jeff Liebermann <jeffl@cruzio.com> wrote in > news:5c5hud5vbqqcjfadcfh9lkgm0v5hs1k1no@4ax.com: > >> On Sun, 11 Nov 2018 21:11:56 +0200, Tauno Voipio >> <tauno.voipio@notused.fi.invalid> wrote: >> >> >>>> Back of envelope power requirements might be: >>>> 100 mega-watts for 1 second = 100 mJ >>>> Diesel fuel contains 36 mJ of energy per liter. >>>> Diesel at $1/liter. >>>> Assuming the amplifier is running class A, the best it can do is 50% >>>> efficiency. My guess the diesel train engine, air compressor, and >>>> modulator might operate at about 1% efficiency. Therefore, to >>>> operate your amplifier of 1 second, it would require: >>>> 100 mJ/sec / 36 mJ/liter / 0.5 / 0.01 >>>> = 556 liters/sec = 33,000 liters/minute >>>> At about $1/liter retail price of diesel: >>>> <https://www.globalpetrolprices.com/diesel_prices/> >>>> your amplifier might burn about $33,000 USD for every minute of >>>> operation. >> >>> Jeff, >>> >>> There is some difference between 1 mJ and 1 MJ. >> >> Yep. mY mistake. I obtained the conversion factor from: >> <https://deepresource.wordpress.com/2012/04/23/energy-related- > conversio >> n-factors/> which uses: "mJ = mega-Joules" >> >> > > Probably with the logic of "who uses millijoules?" > > I mean... I know the measure exists.Pulsed laser people. Cheers Phil Hobbs -- Dr Philip C D Hobbs Principal Consultant ElectroOptical Innovations LLC / Hobbs ElectroOptics Optics, Electro-optics, Photonics, Analog Electronics Briarcliff Manor NY 10510 http://electrooptical.net http://hobbs-eo.com
Need schematic for a 100 megawatt audio amplifier
Started by ●November 11, 2018
Reply by ●November 12, 20182018-11-12
Reply by ●November 12, 20182018-11-12
On Saturday, 10 November 2018 23:39:41 UTC-5, guita...@myband.com wrote:> Need schematic for a 100 megawatt audio amplifier using vacuum tubes.I recall the 1st US festival with 30 bands in San Bernadino started by Wozniak in the early 80's had a 1 Megawatt audio system. It was impressive. With stacked 1mx1m speakers in arrays larger than a two drive-in movie screens in stereo, and it was HiFi quality. The satellite speakers on towers had perfect delay also had a water jet on a turret to cool the audience between sets. You would dry out in 5 minutes. Unlike Woodstock, it was well-planned, and well-managed. https://en.wikipedia.org/wiki/US_Festival#Labor_Day_Weekend,_1982
Reply by ●November 12, 20182018-11-12
On Sun, 11 Nov 2018 22:38:57 -0800, Jeff Liebermann <jeffl@cruzio.com> wrote:>On Sun, 11 Nov 2018 21:17:36 -0500, krw@notreal.com wrote: > >>I've been zapped through my chest (front to back) with 100J five times >>and 300J once (I have calibrated the burn marks). I was awake for #5. >>That *hurt*. >> >>That's not counting the bypass/MAZE (in '14). No idea if it was >>needed but #2 was a week later. > >Ouch. I've never needed to have my heart restarted with the paddles. >I'm told it's no fun when it happens.It's never supposed to be done to someone who is still conscious. Ever. They weren't happy when I told them about it the next day. "We didn't think you'd remember...". Yeah, right.>Several of my friends have >pacemakers with built in defibrillators installed. If the heart >misses too many beats or fails to follow a medically acceptable >rhythm, they get automatically zapped. I'm told it feels like getting >hit in the chest with a baseball bat, which also seems like no fun. >Stay well.My brother has one. He likens it to being kicked in the chest by a mule. I have a pacemaker because of electrical problems but didn't need the cardioverter/defibrillator version. Apparently the need for a pacemaker runs in the family.
Reply by ●November 12, 20182018-11-12
On Mon, 12 Nov 2018 05:42:26 -0800 (PST), Anthony Stewart <tony.sunnysky@gmail.com> wrote:>Unlike Woodstock, it was well-planned, and well-managed.They had 13 years to learn the mistakes made. No one even suspected that Woodstock would turn out to be Woodstock.
Reply by ●November 12, 20182018-11-12
On Mon, 12 Nov 2018 13:24:14 +1100, Clifford Heath <no.spam@please.net> wrote:>On 12/11/18 1:09 pm, krw@notreal.com wrote: >> On Sun, 11 Nov 2018 11:05:02 +0000, TTman <kraken.sankey@gmail.com> >> wrote: >> >>> On 11/11/2018 04:39, guitar-lead@myband.com wrote: >>>> Need schematic for a 100 megawatt audio amplifier using vacuum tubes. >>>> >>>> >>> I have one for 900KW if that's any good... can't you lower your sights a >>> bit ? >> >> That's only .5dB short of the spec. >20.45dB - you missed two zeroes.My eyes skipped right over them. ;-)>> He won't even hear the difference. > >Probably true, he'd be mincemeat either way
Reply by ●November 12, 20182018-11-12
On Mon, 12 Nov 2018 06:37:03 -0500, Phil Hobbs <pcdhSpamMeSenseless@electrooptical.net> wrote:>On 11/11/18 11:37 AM, John Larkin wrote: >> On Sat, 10 Nov 2018 22:39:37 -0600, guitar-lead@myband.com wrote: >> >>> Need schematic for a 100 megawatt audio amplifier using vacuum tubes. >>> >> >> So the entire world can hear you banging away on a guitar? >> >> > >Nah, the guy's an amateur. A real rock musician would turn it up to >10**11. ;) > >Cheers > >Phil HobbsIf he's any good, he can post his performance to YouTube, a billion people will play it, and there's your 100 megawatts. -- John Larkin Highland Technology, Inc lunatic fringe electronics
Reply by ●November 12, 20182018-11-12
Cursitor Doom <curd@notformail.com> wrote in news:psagtb$9gs$17@dont- email.me:> On Sun, 11 Nov 2018 15:38:39 -0800, Jeff Liebermann wrote: > >> I suspect that the difficulty getting my heart kick started >> might be responsible for my inability to properly abbrev. > > Did it also leave you with a life-long stutter? > ;) > >Only when he writes the word "computer". He stutters out "computah" every time. Or maybe that is another s.e.d poster. Hehehe... hic... hehehe...
Reply by ●November 12, 20182018-11-12
"Tom Del Rosso" <fizzbintuesday@that-google-mail-domain.com> wrote in news:psaptu$gth$1@dont-email.me:> Jeff Liebermann wrote: >> On Sat, 10 Nov 2018 22:39:37 -0600, guitar-lead@myband.com wrote: >> >>> Need schematic for a 100 megawatt audio amplifier using vacuumtubes.>> >> No problem and no vacuum tubes required. A few diesel train engines >> driving air compressors feeding a big Wagnerian horn should do the >> trick. Modulation would be by pneumatic valve control, fluidics, or >> hydraulic modulators. > > No matter how it's done, the problem is still finding roadies who can > move it. > > > >This is the point at which the 'tour' participants *and* audience comes to your venue, every time. Hey I know! Rebuild Red Rocks to accommodate 2 1MW stereo speaker stacks. Set up another 2 1MW units for surround sound and you could create a sound pressure swing that vaporizes the audience. (compresses them into the quantum realm). Hahaha... yeah, sure...
Reply by ●November 12, 20182018-11-12
Phil Hobbs <pcdhSpamMeSenseless@electrooptical.net> wrote in news:z8GdnRv8AK58-HTGnZ2dnUU7-VmdnZ2d@supernews.com:> On 11/11/18 11:37 AM, John Larkin wrote: >> On Sat, 10 Nov 2018 22:39:37 -0600, guitar-lead@myband.com wrote: >> >>> Need schematic for a 100 megawatt audio amplifier using vacuum tubes. >>> >> >> So the entire world can hear you banging away on a guitar? >> >> > > Nah, the guy's an amateur. A real rock musician would turn it up to > 10**11. ;) > > Cheers > > Phil Hobbs >Back from your future.
Reply by ●November 12, 20182018-11-12
Phil Hobbs <pcdhSpamMeSenseless@electrooptical.net> wrote in news:psbrhf $ckl$2@dont-email.me:> On 11/11/18 4:17 PM, DecadentLinuxUserNumeroUno@decadence.org wrote: >> Jeff Liebermann <jeffl@cruzio.com> wrote in >> news:5c5hud5vbqqcjfadcfh9lkgm0v5hs1k1no@4ax.com: >> >>> On Sun, 11 Nov 2018 21:11:56 +0200, Tauno Voipio >>> <tauno.voipio@notused.fi.invalid> wrote: >>> >>> >>>>> Back of envelope power requirements might be: >>>>> 100 mega-watts for 1 second = 100 mJ >>>>> Diesel fuel contains 36 mJ of energy per liter. >>>>> Diesel at $1/liter. >>>>> Assuming the amplifier is running class A, the best it can do is50%>>>>> efficiency. My guess the diesel train engine, air compressor, and >>>>> modulator might operate at about 1% efficiency. Therefore, to >>>>> operate your amplifier of 1 second, it would require: >>>>> 100 mJ/sec / 36 mJ/liter / 0.5 / 0.01 >>>>> = 556 liters/sec = 33,000 liters/minute >>>>> At about $1/liter retail price of diesel: >>>>> <https://www.globalpetrolprices.com/diesel_prices/> >>>>> your amplifier might burn about $33,000 USD for every minute of >>>>> operation. >>> >>>> Jeff, >>>> >>>> There is some difference between 1 mJ and 1 MJ. >>> >>> Yep. mY mistake. I obtained the conversion factor from: >>> <https://deepresource.wordpress.com/2012/04/23/energy-related- >> conversio >>> n-factors/> which uses: "mJ = mega-Joules" >>> >>> >> >> Probably with the logic of "who uses millijoules?" >> >> I mean... I know the measure exists. > > Pulsed laser people. > > Cheers > > Phil Hobbs > >Ahhh... to say.. impinge a tiny burn on a cornea or lens, as opposed to punching a hole right through it and the retina/eyeball behind it.
