Design Con 2015
Breaking News
Comments
Newest First | Oldest First | Threaded View
Page 1 / 4   >   >>
Stargzer
User Rank
CEO
Re: Cecil Rhodes
Stargzer   1/31/2014 11:20:24 AM
NO RATINGS
@antedeluvian:  "and it seems I remembered it perfectly- what a waste of brain cells!"

Would that I could remember any Math the way you remember poetry! :- )

 

antedeluvian
User Rank
Blogger
Re: Cecil Rhodes
antedeluvian   1/30/2014 7:41:14 PM
NO RATINGS
Stargzer

 

I love the quote. Many thanks.

When CJ died Rudyard Kipling wrote a poem that went:

"the immense and brooding spirit still shall,quicken and control. Living he was the land, and dead his soul shall be her soul." Of course Kipling was an arch imperialist himself, as you can tell. I wrote the above from memory, being the second or third poem I had to memorise at school. It was inscribed on a scroll around the picture of Rhodes' head on the Federation of Rhodesia and Nyasaland pound note (now I am really going back, to what is now Zimababwe, Zambia and Malawi). I just looked it up, and it seems I remembered it perfectly- what a waste of brain cells!

Stargzer
User Rank
CEO
Re: Cecil Rhodes
Stargzer   1/30/2014 6:35:21 PM
NO RATINGS
@antedeluvian (and David):  " ... Cecil John Rhodes' favourite colour- the country being named for him. Better known today for the Rhodes scholarship."

There were varying opinions on Mr. Rhodes.  Here's one from one of my favorite authors:

"Before the middle of July we reached Cape Town, and the end of our African journeyings.  And well satisfied; for, towering above us was Table Mountain--a reminder that we had now seen each and all of the great features of South Africa except Mr. Cecil Rhodes.  I realize that that is a large exception.  I know quite well that whether Mr. Rhodes is the lofty and worshipful patriot and statesman that multitudes believe him to be, or Satan come again, as the rest of the world account him, he is still the most imposing figure in the British empire outside of England. ...

" ... I admire him, I frankly confess it; and when his time comes I shall buy a piece of the rope for a keepsake."

Mark Twain, "Following the Equator," end of Chapter LXIX, commenting on Cecil Rhodes of Rhodesia.

Please remember that Mark Twain (Samuel Langhorn Clemens) was first and foremost a humo(u)rist. 

logisch
User Rank
Rookie
Re: Let the tube be the heartbeat
logisch   1/23/2014 4:26:21 AM
NO RATINGS
PWM might mean extra stress to a filament and thus kill it much faster.
best practice would be a linear adjustable rgulator. if it shall be voltage or current conrtolled i can not say right now. for LEDs current conterol is quite the standard.

a permanent drive is fine as it is a steady condition. heating up and cooling down is a little bit extra stress.

logisch
User Rank
Rookie
Circuit breakers
logisch   1/23/2014 4:17:29 AM
NO RATINGS
those switch might not be safe nowadays for what it was used once.

using it in a >100V setup it can be a dangerous part. todays safety rules reflect more than 100 years of experience with electricity. where once open metal was okay its not okay as of today. and please note that even such a device sees material degradation like increased risk of breakage or increased conductivity.

best practice is using such a device only with low voltages. you might know the limits for DC and AC that are allowed to be exposed to even human tampering such as in audio plugs, chargers and electric model train tracks. its the "toy's voltage" level.

have fun with your toy project and abstain from high voltage where ever possible.

Max The Magnificent
User Rank
Blogger
Re: Alternate Light(ning) Effects
Max The Magnificent   1/21/2014 1:53:21 PM
NO RATINGS
@Rcurl: What ever happened to the small circular multi-colored sound activated display device you had in your office a while back?  I think it would fit right in.

Ah -- that plasma display thing -- I'd forgotten all about that -- it's on the shelves behind me somewhere (burried under layers of other stuff) -- but just wait till you see what I picked up thsi morning from Mock Electronics -- I'm writing a blog as we speak...

Rcurl
User Rank
Rookie
Re: Alternate Light(ning) Effects
Rcurl   1/21/2014 9:32:50 AM
NO RATINGS
What ever happened to the small circular multi-colored sound activated display device you had in your office a while back?  I think it would fit right in.

As for the male part of the project- in my opinion it should be nothing more than a battery, single pole toggle switch, and an LED in a clear acrylic enclosure, and it should be referred to simply as "The box".  Alternatively it could be called "Part A".

Douglas442
User Rank
Rookie
Re: Alternate Light(ning) Effects
Douglas442   1/21/2014 5:27:56 AM
NO RATINGS
@ David: "Now THAT is a flash tube."

Yes it is! I would have put a bid in on that one, myself... except that I already have one - shown here, and configured as described earlier: 

http://ic.pics.livejournal.com/douglas442/14689272/23784/23784_original.jpg

It's a fair bit older than the ebay one... probably was old when I bought it some twenty-five years ago... and it's housed in a metal-reinforced glass tube. Gives a nice and relatively quiet little electrical display, still... and no noxious nitrous smell of a hot open air J-L spark.

 

@ Max: "Not a bad idea, although I'm more of a low-voltage man... I did find anther really interesting -- low cost -- tube there -- I can get the coil glowing -- and I'm just about to try lighting it from underneath with NeoPixels -- I'm just waiting for the hot glue holding the NeoPixels on the tube to cool down."

I can relate on that account. Once built a solid-state relay board for my first Commodore 64... for switching some 115VAC lights... and then got a little careless with a screw-driver. Would hate to think what 10KV+ would do to a string of Arduinos. Less smoke, I imagine... but probably more shock!

Still... for lighting and such-like effects, there's just something about such displays that LEDs can't touch.

Then some nixies, maybe? Or perhaps one or two of those "magic-eye" tubes? Or somehow a mix of LEDs and those small neon-bulbs for the "furnace"? 

Max The Magnificent
User Rank
Blogger
Re: Alternate Light(ning) Effects
Max The Magnificent   1/19/2014 4:13:24 PM
NO RATINGS
@David: Ultra-macho men don't have system managers!

Have you been reading GQ again?

David Ashton
User Rank
Blogger
Re: Alternate Light(ning) Effects
David Ashton   1/19/2014 2:52:30 PM
NO RATINGS
@Max: Ultra-macho men don't have system managers!

Page 1 / 4   >   >>


Top Comments of the Week
Flash Poll
Like Us on Facebook

Datasheets.com Parts Search

185 million searchable parts
(please enter a part number or hit search to begin)
EE Life
Frankenstein's Fix, Teardowns, Sideshows, Design Contests, Reader Content & More
Max Maxfield

Max's BADASS Display: A Comedy of Errors
Max Maxfield
5 comments
Good grief -- where does the time go? I first determined to build my Bodacious Acoustic Diagnostic Astoundingly Superior Spectromatic (BADASS) display way back in the mists of time we used ...

<b><a href=Betajet">

The Circle – The Future's Imperfect in the Present Tense
Betajet
5 comments
The Circle, a satirical, dystopian novel published in 2013 by San Francisco-based writer Dave Eggers, is about a large, very powerful technology company that combines aspects of Google, ...

Martin Rowe

Make This Engineering Museum a Reality
Martin Rowe
Post a comment
Vincent Valentine is a man on a mission. He wants to make the first house to ever have a telephone into a telephone museum. Without help, it may not happen.

Rich Quinnell

Making the Grade in Industrial Design
Rich Quinnell
16 comments
As every developer knows, there are the paper specifications for a product design, and then there are the real requirements. The paper specs are dry, bland, and rigidly numeric, making ...

Special Video Section
The LT8640 is a 42V, 5A synchronous step-down regulator ...
The LTC2000 high-speed DAC has low noise and excellent ...
How do you protect the load and ensure output continues to ...
General-purpose DACs have applications in instrumentation, ...
Linear Technology demonstrates its latest measurement ...
10:29
Demos from Maxim Integrated at Electronica 2014 show ...
Bosch CEO Stefan Finkbeiner shows off latest combo and ...
STMicroelectronics demoed this simple gesture control ...
Keysight shows you what signals lurk in real-time at 510MHz ...
TE Connectivity's clear-plastic, full-size model car shows ...
Why culture makes Linear Tech a winner.
Recently formed Architects of Modern Power consortium ...
Specially modified Corvette C7 Stingray responds to ex Indy ...
Avago’s ACPL-K30T is the first solid-state driver qualified ...
NXP launches its line of multi-gate, multifunction, ...
Doug Bailey, VP of marketing at Power Integrations, gives a ...
See how to ease software bring-up with DesignWare IP ...
DesignWare IP Prototyping Kits enable fast software ...
This video explores the LT3086, a new member of our LDO+ ...
In today’s modern electronic systems, the need for power ...