How ground is ground?

bank robberies.

Both charges were fabrications, even according to BATF Director John Magaw,
who admitted the accusations were "inexcusable" in testimony before Congress.

THREE HUNDRED armed federal agents conducted a siege of the Weavers' mountain
home, first killing Randy Weaver's dog, then his son, then his wife.

A law enforcement wilding.

* The CATO Institute, "Congressional Testimony", May 24, 1995
* http://www.cato.org
*
* The Marshals, wearing camouflage and carrying silenced machine guns, did
* not identify themselves or their purpose, but they did shoot one of the
* dogs. Sammy Weaver, fourteen-years-old, returned fire, and was promptly
* shot by a Marshal.
*
* Sammy turned and fled, with his nearly severed arm flopping as he ran.
*
* Sammy was promptly shot dead in the back.


An FBI sniper, Lon T. Horiuchi, testified he could hit a quarter at 200 yards.

* The CATO Institute, "Congressional Testimony", May 24, 1995
*
* An FBI psychological profile, prepared before the attack, called Vicki
* Weaver the "dominant member" of the family, thus implying that if she
* were "neutralized" everyone else might surrender.

Horiuchi shot Weaver's wife in the head while she held her b

 

The array of wire that is used for your rear window defroster, or a
household toaster, is going to measure awfully close to zero. Heat it up a
little, and the resistance changes. But I posit that yours isn't heated
when you are measuring.

A window motor is going to measure very nearly 0 ohms until it starts
moving.

I looked in my 2003 Civic shop manual for the fuse block, which had no
connectors noted as ground. Reading your new description of the project, I
would use some existing ground screw.

Everything is analog. Digital circuits measure something that is
acceptable as a one, or acceptable as a zero. Voltages fluctuate somewhat
within the acceptable states. Rise times, especially rise times with steps
in them, expose poor digital design in an analog world.

20 years ago I was working on the analog portions of computer touch
screens. It was a "one" when someone touched it. Making that happen in an
analog world was the challenge.

 

The array of wire that is used for your rear window defroster, or a
household toaster, is going to measure awfully close to zero. Heat it up a
little, and the resistance changes. But I posit that yours isn't heated
when you are measuring.

A window motor is going to measure very nearly 0 ohms until it starts
moving.

I looked in my 2003 Civic shop manual for the fuse block, which had no
connectors noted as ground. Reading your new description of the project, I
would use some existing ground screw.

Everything is analog. Digital circuits measure something that is
acceptable as a one, or acceptable as a zero. Voltages fluctuate somewhat
within the acceptable states. Rise times, especially rise times with steps
in them, expose poor digital design in an analog world.

20 years ago I was working on the analog portions of computer touch
screens. It was a "one" when someone touched it. Making that happen in an
analog world was the challenge.

 

Maybe this will jog your memory. V=IR, R=V/I Resistance and impedance
are both the ratio of Voltage to Current. They both have the units of
ohms. For direct current, resistance is the ratio of voltage to
current. For sinusoidal signals impedance is the ratio of voltage to
current. Zero frequency is DC. Inductors (stereo speakers are pretty
close) have 0 resistance and 4 or 8 ohms of impedance. Capacitors
(like your crossing filter blocking capacitor) have infinite
resistance and varying impedance depending on sinusoidal frequency.
Any signal can be decomposed into sine waves. A spectrum analyser
shows this. Phasor anaysis is the easiest way solve these problems.
If you travel around a circle at a constant speed, your height above
the circle describes a perfect sine wave (non-rigorous description).
Sine waves are easy, common things, just right angle triangles,
really. A sine wave is described by amplitude, frequency and angle.
Impedance is an amplitude and angle that multiplies from one sine wave
to another (may be frequency dependant).

I filled up about half my 40Gb iPod with my entire 500 CD collection.
It fits in a shirt pocket. When are car manufacturers going to
integrate MP3 players, or at least an interface, into their cars.
Consumers are standing by!

 

Maybe this will jog your memory. V=IR, R=V/I Resistance and impedance
are both the ratio of Voltage to Current. They both have the units of
ohms. For direct current, resistance is the ratio of voltage to
current. For sinusoidal signals impedance is the ratio of voltage to
current. Zero frequency is DC. Inductors (stereo speakers are pretty
close) have 0 resistance and 4 or 8 ohms of impedance. Capacitors
(like your crossing filter blocking capacitor) have infinite
resistance and varying impedance depending on sinusoidal frequency.
Any signal can be decomposed into sine waves. A spectrum analyser
shows this. Phasor anaysis is the easiest way solve these problems.
If you travel around a circle at a constant speed, your height above
the circle describes a perfect sine wave (non-rigorous description).
Sine waves are easy, common things, just right angle triangles,
really. A sine wave is described by amplitude, frequency and angle.
Impedance is an amplitude and angle that multiplies from one sine wave
to another (may be frequency dependant).

I filled up about half my 40Gb iPod with my entire 500 CD collection.
It fits in a shirt pocket. When are car manufacturers going to
integrate MP3 players, or at least an interface, into their cars.
Consumers are standing by!

 

coughed up:

Interesting. Thanks. I'll remember this.

Oh sure sure. I remember learning some about the voltage transitions when I
posed the following ttl wireup to my EE instructor: (go fixed font)

+---------+
------------>| |
| NOR |-------+
+----->| | |
| +---------+ |
| |
+------------------------+

He said that he should someday hook the thing up to a scope with me to see
what the gates do with this. He said theoretically the voltages should
roughly rise and fall themselves from something like 1.4 to 1.0 or even near
0 and back (or something like that), but that's only if the gate behaves at
such intervals, since the line will never hit true line level of 5 volts
(the TTL we were using). I forget what the gates will regard as a 1 deep
inside---1.4? 2.4? My memory is worth @#$% these days.

 

coughed up:

Interesting. Thanks. I'll remember this.

Oh sure sure. I remember learning some about the voltage transitions when I
posed the following ttl wireup to my EE instructor: (go fixed font)

+---------+
------------>| |
| NOR |-------+
+----->| | |
| +---------+ |
| |
+------------------------+

He said that he should someday hook the thing up to a scope with me to see
what the gates do with this. He said theoretically the voltages should
roughly rise and fall themselves from something like 1.4 to 1.0 or even near
0 and back (or something like that), but that's only if the gate behaves at
such intervals, since the line will never hit true line level of 5 volts
(the TTL we were using). I forget what the gates will regard as a 1 deep
inside---1.4? 2.4? My memory is worth @#$% these days.

 

Roadie Roger coughed up:

What seems also likely is having every song, movie, talk show, etc., ever
performed in history available by satellite for ~$50 / year. Your home
system, car, boat, "walkman", etc., would all tap into that.

If they don't go that way, then they risk annihilation. As bandwidths
increase, I'd one day be able to download via p2p in minutes everything ever
recorded, etc.

 

Roadie Roger coughed up:

What seems also likely is having every song, movie, talk show, etc., ever
performed in history available by satellite for ~$50 / year. Your home
system, car, boat, "walkman", etc., would all tap into that.

If they don't go that way, then they risk annihilation. As bandwidths
increase, I'd one day be able to download via p2p in minutes everything ever
recorded, etc.

 

Thomas G. Marshall wrote:
[...]

Forget taxing your grey-matter with impedance! For this
purpose of dealing with 12V electrics, resistance is King!

Why do you think that you can't use the ground already supplied
to the lighter socket?

 

Thomas G. Marshall wrote:
[...]

Forget taxing your grey-matter with impedance! For this
purpose of dealing with 12V electrics, resistance is King!

Why do you think that you can't use the ground already supplied
to the lighter socket?

 

The cost per bit for satellite is pretty high for download on demand.
Satellite phone calls are very expensive and those companies are
losing money hand over fist. Telephone is only 3 Khz bandwidth and
speech vocoding reduces that even further. Music is 20KHz bandwidth
and won't compress like talk. Music has to push a lot of bits.

Cellular bandwidths ARE about to increase in a big way. At some point
they will be looking around for a killer app. You just came up with
it. (The cost for wireline is miniscule.)

I think greed will kill it. At $50 a year everybody would want it.
At $20 a month few people would want it. Apple is charging a buck a
track for iTunes. They could make a lot more money selling for 10
cents a tune, but every one is too greedy. They got spoiled selling
25 cent CDs for $15. Phone my digital pictures home would be another
good high bandwidth cellular application.

Keep thinking those happy thoughts

 

The cost per bit for satellite is pretty high for download on demand.
Satellite phone calls are very expensive and those companies are
losing money hand over fist. Telephone is only 3 Khz bandwidth and
speech vocoding reduces that even further. Music is 20KHz bandwidth
and won't compress like talk. Music has to push a lot of bits.

Cellular bandwidths ARE about to increase in a big way. At some point
they will be looking around for a killer app. You just came up with
it. (The cost for wireline is miniscule.)

I think greed will kill it. At $50 a year everybody would want it.
At $20 a month few people would want it. Apple is charging a buck a
track for iTunes. They could make a lot more money selling for 10
cents a tune, but every one is too greedy. They got spoiled selling
25 cent CDs for $15. Phone my digital pictures home would be another
good high bandwidth cellular application.

Keep thinking those happy thoughts

 

Roadie Roger coughed up:

Screw it. We're already living in world that, while not "beyond" my dreams
10 years ago, is certainly as high as any pipe expectation I ever had.
"geez, wouldn't it be nice if this SGI machine in front of me had its
solid-state graphics hardware on a card."

I mean, systems sold as .4 terabytes? 120 Gig systems sold to grandmothers?
A gig card in my camera? Broadband connection? 19" LCD in front of me? 3
billion cycles per second on my desktop with the ability for the chip to
split into two virtual chips? Fully 3D realistic first person shooter games
played with strangers from Germany over something called the internet?
Every company with it's own fully graphic and mouse accessible interactive
online display? Doing all my shopping online and not through something
hokey like "compuserve"? A fully digital cell phone? OI !!!!

Or "woo hoo". Either fits. And I didn't even have to mention lesbian
movies over the internet for free........ {author chuckles}

 

Roadie Roger coughed up:

Screw it. We're already living in world that, while not "beyond" my dreams
10 years ago, is certainly as high as any pipe expectation I ever had.
"geez, wouldn't it be nice if this SGI machine in front of me had its
solid-state graphics hardware on a card."

I mean, systems sold as .4 terabytes? 120 Gig systems sold to grandmothers?
A gig card in my camera? Broadband connection? 19" LCD in front of me? 3
billion cycles per second on my desktop with the ability for the chip to
split into two virtual chips? Fully 3D realistic first person shooter games
played with strangers from Germany over something called the internet?
Every company with it's own fully graphic and mouse accessible interactive
online display? Doing all my shopping online and not through something
hokey like "compuserve"? A fully digital cell phone? OI !!!!

Or "woo hoo". Either fits. And I didn't even have to mention lesbian
movies over the internet for free........ {author chuckles}

 

Graham W coughed up:

I can. Elsethread I gave a link to the explanation to my fruitless attempts
at undoing a dashboard undoubtedly designed by Josef Mengele. Well,
japanese, so Mengele san.

So for the time being I'm tunneling (easily) both wires from the drawer
below the ashtray to the power options connectors, and now that It's been
explained "why" to me, some chassis bolt somewhere nearby.

 

Graham W coughed up:

I can. Elsethread I gave a link to the explanation to my fruitless attempts
at undoing a dashboard undoubtedly designed by Josef Mengele. Well,
japanese, so Mengele san.

So for the time being I'm tunneling (easily) both wires from the drawer
below the ashtray to the power options connectors, and now that It's been
explained "why" to me, some chassis bolt somewhere nearby.

 

Music compresses beautifully. Bitrate from a CD is about 1.4 mega bit /
sec. With psyco-acoustic coding you can get much lower data rates. I
routinely listen to MP3 files compressed to 128 kilo bit / sec, a factor
of 11. Even at 96 kbit / sec I have no complaints about the sound
quality. The MP3 standard is old, more recent algorithms claim even
lower bit rates for same sound quality. But you are right, even
compressed, music still takes about 5 - 10 x the bitrate of voice (if
memory serves me, the full-rate vocoder for GSM cell phones used about
22 k bit / sec, the more recent half-rate is 11 k bit / sec).

I do agree that streaming music on demand via satellite probably won't
be viable. An Audio-Tivo might be a better solution. You could have a
system where you enter your playlist on your computer at home, and then
over the next few days items on the list would be broadcast to any user
who has requested it, then stored in your car stereo. Or you could have
a service on top of XM or Sirius where you push a button on the stereo
any time you like a song, and it would be stored locally and you would
be charged for it.

Still, I want to buy hardware, not pay for services. I'd be perfectly
happy with an MP3 player that I could load up at home and then stick in
the car.

At a buck a tune, Apple is barely breaking even. They make their money
on the iPod. The license holders certainly are greedy. Paying $15 - $20
for a CD with one or two good songs is a rip-off. The music industry is
complaining about lower revenue. I'd say the good times are over, now
they need to earn their money.

 

Music compresses beautifully. Bitrate from a CD is about 1.4 mega bit /
sec. With psyco-acoustic coding you can get much lower data rates. I
routinely listen to MP3 files compressed to 128 kilo bit / sec, a factor
of 11. Even at 96 kbit / sec I have no complaints about the sound
quality. The MP3 standard is old, more recent algorithms claim even
lower bit rates for same sound quality. But you are right, even
compressed, music still takes about 5 - 10 x the bitrate of voice (if
memory serves me, the full-rate vocoder for GSM cell phones used about
22 k bit / sec, the more recent half-rate is 11 k bit / sec).

I do agree that streaming music on demand via satellite probably won't
be viable. An Audio-Tivo might be a better solution. You could have a
system where you enter your playlist on your computer at home, and then
over the next few days items on the list would be broadcast to any user
who has requested it, then stored in your car stereo. Or you could have
a service on top of XM or Sirius where you push a button on the stereo
any time you like a song, and it would be stored locally and you would
be charged for it.

Still, I want to buy hardware, not pay for services. I'd be perfectly
happy with an MP3 player that I could load up at home and then stick in
the car.

At a buck a tune, Apple is barely breaking even. They make their money
on the iPod. The license holders certainly are greedy. Paying $15 - $20
for a CD with one or two good songs is a rip-off. The music industry is
complaining about lower revenue. I'd say the good times are over, now
they need to earn their money.

 

Randolph coughed up:

I think that artists /ought/ to be poor. I sooo had hopes for P2P until
the RIAA started filing lawsuits. I know that they cannot subpoena for
names based upon IP anylonger. But they still filed 1500 suits since this
january, and they call them "john doe" suits against the holders of a
particular IP. Beats me how the heck they're doing it.