Completely confused aerospace student- simple circuits question

Adam Chapman · 2006-12-03T15:06:03+00:00

Hi,I am aerodynamics student and I am designing a low-observable aircraft.I am installing sheets of electroluminescent sheet which stop theaircraft being seen as a silhouette against the light colored sky.I have found a material that emits blue light when a voltage is appliedin one direction, and red light when that voltage is reversed. The bluewill be useful against the daytime sky, and red against the sky at dawnor dusk. However, I do not want both at the same time, as would occurwith a high frequency AC supply.The only circuit theory I know is very simple (basically how resistorsand capacitors work).I think to allow just a positive or just a negative voltage I wouldneed to switch between two diodes. Then use capacitors to keep a smoothsine wave?Also, It would be nice if I could mix the two colours, for example have two pulses of blue then one pulse of red to make a light purplecolour. The freqency of a similar system I have read about uses afrequency of 3700 Hz.Im not expecting anyone to design a circuit for me, but if anyone couldperhaps give me some clues or direct me to a useful tutorial I wouldreally apprecite it.Thanks, Adam

Dec 03, 2006 25 Replies

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Phil Allison 19 years ago

"Paul Hovnanian P.E."

** Not visible on my server.

BTW

Posting " blind " with no quote is bad etiquette.

But the lest of your sins.

....... Phil

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Paul Hovnanian P.E. 19 years ago

Have you seen any Romulan ships flying around lately? That proves the cloaking device works.

;-)

Paul Hovnanian mailto:Paul@Hovnanian.com ------------------------------------------------------------------ Programmers don\'t die, they just GOSUB without RETURN.

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Paul Hovnanian P.E. 19 years ago

[snip]

Just mark them up with graffiti. ;-)

Paul Hovnanian mailto:Paul@Hovnanian.com ------------------------------------------------------------------ Our bombs are smarter than the average high school student. At least they can find Kuwait. - A. Whitney Brown

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Paul Hovnanian P.E. 19 years ago

See 'Stealth' on alt.binaries.schematics.electronic

-- Paul Hovnanian mailto: snipped-for-privacy@Hovnanian.com

------------------------------------------------------------------ Ban the bomb. Save the world for conventional warfare.

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Paul Hovnanian P.E. 19 years ago

Have patience. All good things come to those who wait.

-- Paul Hovnanian mailto: snipped-for-privacy@Hovnanian.com

------------------------------------------------------------------ Bureaucrat, n.: A person who cuts red tape sideways. -- J. McCabe

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Rich Grise, Plainclothes Hippi 19 years ago

Well, when was it that Capt. Kirk & crew came to kidnap the whales?

Oh, wait a minute - that was a Klingon ship.

Never mind. ;-)

Cheers! Rich

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