sci.electronics.design Google Group

Re: OT: Any BCIT EET Grads Here?

2010-03-21T23:58:29Z

On Mar 21, 6:10 pm, "k...@att.bizzzzzzzzzzzz"
The idiot krw says that I've said that the laffer curve doesn't exist,
whereas I've just said that it does exist, but is misinterpreted by
right-wing nitwits - of whom krw is a prize example.
If krw had enough sense to realise what he was saying, he'd be a liar.

Re: IR Receiver/Demodulator

2010-03-21T23:53:44Z

If you want tons of gain in the TIA that's a problem. Jim could design a
gyrator though :-)
Not too much smarts needed, just monitor wideband AC.
Yes, you've got to shade it via a tube.
With RF the wavelength doesn't really matter but you have to stay within
an ISM band and pick one that's not crowded. If directionality isn't

Re: Microwave brain scrambler?

2010-03-21T23:52:34Z

"...an organization that is incapable of any sort of immorality
or crime, because they would never be accused, no matter who
they attacked."
I don't quite follow.

Re: OT: Any BCIT EET Grads Here?

2010-03-21T23:50:54Z

Sure. And the sky is full of flying pigs.

Re: IR Receiver/Demodulator

2010-03-21T23:49:58Z

...
Oh yeah... :o)
It was big, side by side fresnal lenses (tx & rx) each about a foot square,
I think it might've been a 5W LED they used.
Grant.

Re: OT: Any BCIT EET Grads Here?

2010-03-21T23:48:54Z

On Mar 21, 6:06 pm, "k...@att.bizzzzzzzzzzzz"
I cited the Regan and Bush tax cuts, which were supposed to increase
the US take - according to the Laffer curve. They decreased it.
What's your evidence. Granting that your head semms to be firmly
jammed up your fundament, its your head that is immersed in "not

Re: IR Receiver/Demodulator

2010-03-21T23:48:02Z

Yeah, it probably wouldn't be so great in a thick London fog. Unless you
have enough energy to vaporize the water content :-)

Re: IR Receiver/Demodulator

2010-03-21T23:46:33Z

I am sure. But I don't remember the photodiode characteristics, it might
have been chosen for the purpose.
LC is fairly easy and stable down there. Mechanical filters are sort of
rare antiques by now, I wouldn't even know if anyone still manufactures
them. Back then Collins did.
Heck, nowadays you could even do active filters. Or take a Cypress PSoC

Re: OT: Any BCIT EET Grads Here?

2010-03-21T23:41:57Z

So find some evidence to prove your claim. Your convictions in this
area don't seem to be founded on anything that looks like real world
data.
On account of it is now somewhat larger than the U.K. 300 million US
citizens educated to roughly the same level as 60 million UK citizens
represent five times the productive capacity.

Re: IR Receiver/Demodulator

2010-03-21T23:41:45Z

Down in the kilohertz, it's hard to get enough inductive reactance for
this job. A sub-poissonian current feedback loop works OK.
It would if you have something sufficiently smart attached to it. If
you have a DC path, all you need is a comparator.
It isn't that hard to do if (a) you have a sunshade, as you've suggested

Re: FHSS Detection with Spec Analyzer

2010-03-21T23:27:51Z

Well, I sorta agree with your disagreement, but only a bit.
A spread spectrum system that was _trying_ to hide in the FM broadcast
band could probably do so quite effectively. A system that is meant to
be public but happens to have qualities that would hide it (E.g. CDMA
without explicit despreading) would also hide effectively, at least from

Re: Explain Sonar Beam-Forming

2010-03-21T23:27:06Z

Circut Cellar, heh. There are tons and tons of literature on phased
arrays be it acoustic or electromagnetic. The entire IEEE magazines are
issued about that.
VLV

Re: Explain Sonar Beam-Forming

2010-03-21T23:19:20Z

Circuit Cellar magazine had the best education in beamforming I've
seen, a few months ago. You can buy it on line for a few bucks..
I'd hurry, since Elektor bought them they will go to hell in a
handbasket in a few months.
Steve

Re: Universal Parallel Bus -- why not?

2010-03-21T23:14:01Z

On Sun, 21 Mar 2010 17:04:49 -0500, "Tim Williams" <tmoran...@charter.net>
wrote:
Bullshit.
The Monochrome and printer adapter pinout:
Pin No Signal Direction Register-bit
DB25 Name
1 nStrobe Out Control-0
2 Data0 In/Out Data-0
3 Data1 In/Out Data-1
4 Data2 In/Out Data-2

Re: Enclosures

2010-03-21T23:12:44Z

In your position i would get someone to bend up some aluminum,
like a local high school / trade school. Of course you would
have to dimension it. Now let's see what the others have to
say.