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Parasitic values

M

Mike

Jan 1, 1970
0
Been back there now on business many times, but they still know how to
irritate... went into a hotel restaurant wearing a $1000 Sakowitz
suede jacket, with no tie, and was told I wasn't properly dressed...

It wasn't so much the lack of a tie, Jim, it was the lack of pants that had
them all worked up... ;-)

-- Mike --
 
A

Activ8

Jan 1, 1970
0
[snip]
My first night in Taxyourtwoshits we couldn't find a damned place
to get a drink! What a piss-poor place that wuz. Yes, we
eventually found Cambridge (we were staying in Burlington) and a
nice local hole-in-wall.

Naaah, It's Massa2shits ;-)

By being a student there, and getting an arrest warrant for working on
Sunday and then dodging the fine, I grew to hate the place... damned
church/police state.

Been back there now on business many times, but they still know how to
irritate... went into a hotel restaurant wearing a $1000 Sakowitz
suede jacket, with no tie, and was told I wasn't properly dressed...
what scum... ship 'em to Iraq.

Or just cut 'em off and let 'em float out to sea.

I affectionately refer to Massa2shits as the asshole of the nation ;-)

...Jim Thompson

Ah, it's just because the place has been settled since 1620. There is alot of
"old things" around. The "Blue Laws" are over, you can now work on Sundays,
and all stores are open. Burlington must be a "dry" town. Some towns allow
selling booze in stores, some towns stores and bars and restuarants, some are
dry.
The hotel must not have liked your looks, most such places offer to loan a tie
in such situations. Was it the Ritz?
Actually, Massachusetts is not that heavily taxed anymore. We even have had
two republican governors in a row. No tax on food or clothes either. The worse
place I've been to was Arkansas.

Then you know why Texas doesn't fall off into the ocean.
 
A

Activ8

Jan 1, 1970
0
Steve said:
Can anyone tell me how I should be calculating Parasitic Inductance,
Resistance and Capacitance? Any equations would be helpful. I am
revising for a telecommunications module and can't seem to find
anything anywhere and with no answers to work with, I am confused
whether I am doing it right.

Typical question:
A 10.1nH inductor at 1GHz is purely resistive. The measured value of
resistance is 127ohms. Calculate the parasitic capacitance. [2 Marks]

If an inductance (assumed to be a lumped inductance) looks resistive,
then it is being resonated (canceled) at that frequency by an equal
magnitude capacitive impedance. Magnitude of inductive impedance is
2*pi*f*L. Magnitude of capacitive impedance is 1/(2*pi*f*C). Set
them equal and solve for C.

Impedance? It's reactance. Impedance takes resistance into account.
 
A

Activ8

Jan 1, 1970
0
Genome said:
| On 22 May 2004 06:45:46 -0700, [email protected] (Steve Hill)
posted this:
|
| >Can anyone tell me how I should be calculating Parasitic Inductance,
| >Resistance and Capacitance? Any equations would be helpful. I am
| >revising for a telecommunications module and can't seem to find
| >anything anywhere and with no answers to work with, I am confused
| >whether I am doing it right.
| >
| >Typical question:
| >A 10.1nH inductor at 1GHz is purely resistive. The measured value of
| >resistance is 127ohms. Calculate the parasitic capacitance. [2 Marks]
| >
| >[email protected]
| >
| >Thanks all.
|
| Post ALL the questions. We'll give you the answers and you'll ace the
| test!
|
| For this one: The only way the inductor can look like a resistor is
if
| it is resonant at the applied frequency. A resonant circuit will have
inductive
| and capacitive elements with identical impedances, of opposite signs,
of course.
| Calculate the impedance of the inductor at the applied frequency and
then
| calculate a value for the parasitic capacitance that will have the
same
| impedance at the same frequency. That resistance value given in the
question is
| either a red herring or the thickness of your skull.
|
| Perhaps you should switch your career goals over to something like
| business administration or sales. "Do you want fries with that order,
Sir?"
|
| Jim
|

Well.... I got it wrong......

By the way the correct question is. "Do you want chips with that?"

DNA

My first night in MA, I went to a pub in Cambridge that had a sign
advertising Steak and Chips, which I ordered with glee. The waitress
delivered my meal, and on the plate was a (delicious) steak, along with a
small packet of potato chips (crisps, as pommies would say). After sorting
out the lingual differences, the waitress and I had a good laugh, and she
brought me some french fries.

Cheers
Terry

Order taker: "Hi. Welcome to Jackburgers. How can I help you?"

Customer: "Uhhh... I'd like a Jackburger and a large fries."

Order taker: "Sorry pal. We're all out of fries. Can I get you
something else?"

Customer: "Yeah. Let me have a Jackburger and a medium fries."

Order taker: "Look bub. I said we're out of fries. Can I get you
something else?"

Customer: "Duhhh... let me have a Jackburger and a small fries."

Order taker: "Listen pal. Who put the straw in strawberry?"

Customer: "Uhhh... nature did."

Order taker: "That's right. Nature did. Who put the razz in
rasberries?"

Customer: "Uhhh... nature did."

Order taker: "That's right. Nature did. Now tell me. Who put the
freak in fries?"

Customer: Duhhh... there ain't no freak in fries."

Order taker: "That's right! There ain't no freakin' fries! Now get
the hell out of my store before I shove a [bleep] 'in jackburger so
far down your [bleep] 'in throat you have to bend over to eat it!"

- Twisted Commercials. 98 Rock, Baltimore.

(IIRC or KLOL, Houston :] )
 
K

Kevin Aylward

Jan 1, 1970
0
Activ8 said:
Steve said:
Can anyone tell me how I should be calculating Parasitic Inductance,
Resistance and Capacitance? Any equations would be helpful. I am
revising for a telecommunications module and can't seem to find
anything anywhere and with no answers to work with, I am confused
whether I am doing it right.

Typical question:
A 10.1nH inductor at 1GHz is purely resistive. The measured value of
resistance is 127ohms. Calculate the parasitic capacitance. [2
Marks]

If an inductance (assumed to be a lumped inductance) looks resistive,
then it is being resonated (canceled) at that frequency by an equal
magnitude capacitive impedance. Magnitude of inductive impedance is
2*pi*f*L. Magnitude of capacitive impedance is 1/(2*pi*f*C). Set
them equal and solve for C.

Impedance? It's reactance. Impedance takes resistance into account.

So what. Impedance is still correct and so therefore is the statement.
All reactances *are* impedances. I can't even remember the last time I
actually used the word "reactance". Its one of those things that is
introduced in EE 101, but no one really uses in normal electronic
parlance, imo.


Kevin Aylward
[email protected]
http://www.anasoft.co.uk
SuperSpice, a very affordable Mixed-Mode
Windows Simulator with Schematic Capture,
Waveform Display, FFT's and Filter Design.
 
J

James Meyer

Jan 1, 1970
0
Or just cut 'em off and let 'em float out to sea.

I affectionately refer to Massa2shits as the asshole of the nation ;-)

...Jim Thompson

Oh, I remember that place. I spent a week there one night.

Jim "Henny" Meyer

The Doctor says "You'll live to be 60!"
"I AM 60!"
"See, what did I tell you?"
 
J

Jim Thompson

Jan 1, 1970
0
[snip]
My first night in Taxyourtwoshits we couldn't find a damned place
to get a drink! What a piss-poor place that wuz. Yes, we
eventually found Cambridge (we were staying in Burlington) and a
nice local hole-in-wall.

Naaah, It's Massa2shits ;-)

By being a student there, and getting an arrest warrant for working on
Sunday and then dodging the fine, I grew to hate the place... damned
church/police state.

Been back there now on business many times, but they still know how to
irritate... went into a hotel restaurant wearing a $1000 Sakowitz
suede jacket, with no tie, and was told I wasn't properly dressed...
what scum... ship 'em to Iraq.

Or just cut 'em off and let 'em float out to sea.

I affectionately refer to Massa2shits as the asshole of the nation ;-)

You're probably thinking of Athol, MA. ;-)

Best regards,
Spehro Pefhany

ROTFLMAO! Good one, Spehro!

...Jim Thompson
 
J

Jim Thompson

Jan 1, 1970
0
HOW CRASS!!!!!!!!!! You were NOT properly dressed.

I live in the west... wearing a tie makes you sweat.

I only wear ties to weddings and funerals ;-)

...Jim Thompson
 
M

maxfoo

Jan 1, 1970
0
It wasn't so much the lack of a tie, Jim, it was the lack of pants that had
them all worked up... ;-)

-- Mike --

Not to mention the NY Yankee ball cap he was wearing...




Remove "HeadFromButt", before replying by email.
 
J

Jim Thompson

Jan 1, 1970
0
Not to mention the NY Yankee ball cap he was wearing...

Diamondbacks ;-)

I did go to a Red Sox game one time with a friend from Baltimore and
cheered for the Orioles ;-)

...Jim Thompson
 
J

John Popelish

Jan 1, 1970
0
Activ8 said:
Steve said:
Can anyone tell me how I should be calculating Parasitic Inductance,
Resistance and Capacitance? Any equations would be helpful. I am
revising for a telecommunications module and can't seem to find
anything anywhere and with no answers to work with, I am confused
whether I am doing it right.

Typical question:
A 10.1nH inductor at 1GHz is purely resistive. The measured value of
resistance is 127ohms. Calculate the parasitic capacitance. [2 Marks]

If an inductance (assumed to be a lumped inductance) looks resistive,
then it is being resonated (canceled) at that frequency by an equal
magnitude capacitive impedance. Magnitude of inductive impedance is
2*pi*f*L. Magnitude of capacitive impedance is 1/(2*pi*f*C). Set
them equal and solve for C.

Impedance? It's reactance. Impedance takes resistance into account.

As I understand it, impedance is a complex value. Reactance is the
magnitude of the a purely reactive impedance. So I could have just as
well used the word reactance as magnitude of impedance. But since I
was referring to purely reactive components, I think I am not wrong.
 
R

Richard Henry

Jan 1, 1970
0
Jim Thompson said:
I live in the west... wearing a tie makes you sweat.

I only wear ties to weddings and funerals ;-)

And they are unsafe around soldering irons and rotating machinery.
 
J

John Larkin

Jan 1, 1970
0
I live in the west... wearing a tie makes you sweat.

I only wear ties to weddings and funerals ;-)

...Jim Thompson

And *very* good French restaurants.

John
 
K

KR Williams

Jan 1, 1970
0
[snip]
My first night in Taxyourtwoshits we couldn't find a damned place
to get a drink! What a piss-poor place that wuz. Yes, we
eventually found Cambridge (we were staying in Burlington) and a
nice local hole-in-wall.

Naaah, It's Massa2shits ;-)

Whatever, only a masshole would live there. ;-)
By being a student there, and getting an arrest warrant for working on
Sunday and then dodging the fine, I grew to hate the place... damned
church/police state.

WHen I first moved to NY (30 years ago) the blue-laws shut
everything down on Sundays, except restaurants and drug stores.
Pretty son grocery stores sprouted delis, and forgot that they
weren't supposed to sell anything but prepared foods on Sunday.
One deli/quickly mart was also a small hardware store on Sunday.
Finally one department store found the fine for being open was
$15/day and decided to pay the "Sunday-tax" during the Christmas
season. Then it got interesting, culminating with the NY Court
of Appeals (the equivalent of a state Supreme court) declaring
most blue-laws unconstitutional. The politics were hilarious.
Been back there now on business many times, but they still know how to
irritate... went into a hotel restaurant wearing a $1000 Sakowitz
suede jacket, with no tie, and was told I wasn't properly dressed...
what scum... ship 'em to Iraq.

Bum. ;-)
Or just cut 'em off and let 'em float out to sea.

As long as the US Senate isn't in session (so Kennedy and Kerry
are at home).
I affectionately refer to Massa2shits as the asshole of the nation ;-)

When I first moved to NY I was told by one colleague that
Albany/Troy NY was the left cheek and another said (same day,
different conversation) that NYC was the right cheek. Since we
were in Poughkeepsie... Hey, I know a little about anatomy.
 
A

Activ8

Jan 1, 1970
0
Activ8 said:
Steve Hill wrote:

Can anyone tell me how I should be calculating Parasitic Inductance,
Resistance and Capacitance? Any equations would be helpful. I am
revising for a telecommunications module and can't seem to find
anything anywhere and with no answers to work with, I am confused
whether I am doing it right.

Typical question:
A 10.1nH inductor at 1GHz is purely resistive. The measured value of
resistance is 127ohms. Calculate the parasitic capacitance. [2 Marks]

If an inductance (assumed to be a lumped inductance) looks resistive,
then it is being resonated (canceled) at that frequency by an equal
magnitude capacitive impedance. Magnitude of inductive impedance is
2*pi*f*L. Magnitude of capacitive impedance is 1/(2*pi*f*C). Set
them equal and solve for C.

Impedance? It's reactance. Impedance takes resistance into account.

As I understand it, impedance is a complex value. Reactance is the
magnitude of the a purely reactive impedance. So I could have just as
well used the word reactance as magnitude of impedance. But since I
was referring to purely reactive components, I think I am not wrong.

I knew what you meant. Might cause a little confusion for a newbie
though.
 
K

KR Williams

Jan 1, 1970
0
TAKE-OUTdobrien25 said:
[snip]
My first night in Taxyourtwoshits we couldn't find a damned place
to get a drink! What a piss-poor place that wuz. Yes, we
eventually found Cambridge (we were staying in Burlington) and a
nice local hole-in-wall.

Naaah, It's Massa2shits ;-)

By being a student there, and getting an arrest warrant for working on
Sunday and then dodging the fine, I grew to hate the place... damned
church/police state.

Been back there now on business many times, but they still know how to
irritate... went into a hotel restaurant wearing a $1000 Sakowitz
suede jacket, with no tie, and was told I wasn't properly dressed...
what scum... ship 'em to Iraq.

Or just cut 'em off and let 'em float out to sea.

I affectionately refer to Massa2shits as the asshole of the nation ;-)

...Jim Thompson

Ah, it's just because the place has been settled since 1620. There is alot of
"old things" around. The "Blue Laws" are over, you can now work on Sundays,
and all stores are open. Burlington must be a "dry" town. Some towns allow
selling booze in stores, some towns stores and bars and restuarants, some are
dry.

Yeah, when I was there Burlington was dry, except the hotel where
we were staying (I understand some money passed under the table
for on that one). *Everythign* was dry from there to the
Cambridge line (and nothing but booze after ;). We were in a
class in Lexington for the week and did much scouting of the
area.
The hotel must not have liked your looks, most such places offer to loan a tie
in such situations. Was it the Ritz?
Actually, Massachusetts is not that heavily taxed anymore. We even have had
two republican governors in a row. No tax on food or clothes either.

Tell us another story daddy. What about your property taxes
(real and personal), income tax, and you still do have a rather
high sales tax. ...though NH is right next door. ;-)
The worse place I've been to was Arkansas.

I can believe that too. Look who was governor. ;-)
 
J

Jim Thompson

Jan 1, 1970
0
Why even go to a french resaraunt, let alone honor them by wearing a
tie?

My favorite French (cuisine) restaurant is run by a Filipino woman.

But my favorite Italian restaurant is run by three brothers from
Sicily ;-)

...Jim Thompson
 
A

Activ8

Jan 1, 1970
0
My favorite French (cuisine) restaurant is run by a Filipino woman.

But my favorite Italian restaurant is run by three brothers from
Sicily ;-)

...Jim Thompson

My mom's favorite french chef was a drunken Brit. You know the gal I
mean.
 
T

Terry Given

Jan 1, 1970
0
Genome said:
| On 22 May 2004 06:45:46 -0700, [email protected] (Steve Hill)
posted this:
|
| >Can anyone tell me how I should be calculating Parasitic Inductance,
| >Resistance and Capacitance? Any equations would be helpful. I am
| >revising for a telecommunications module and can't seem to find
| >anything anywhere and with no answers to work with, I am confused
| >whether I am doing it right.
| >
| >Typical question:
| >A 10.1nH inductor at 1GHz is purely resistive. The measured value of
| >resistance is 127ohms. Calculate the parasitic capacitance. [2 Marks]
| >
| >[email protected]
| >
| >Thanks all.
|
| Post ALL the questions. We'll give you the answers and you'll ace the
| test!
|
| For this one: The only way the inductor can look like a resistor is
if
| it is resonant at the applied frequency. A resonant circuit will have
inductive
| and capacitive elements with identical impedances, of opposite signs,
of course.
| Calculate the impedance of the inductor at the applied frequency and
then
| calculate a value for the parasitic capacitance that will have the
same
| impedance at the same frequency. That resistance value given in the
question is
| either a red herring or the thickness of your skull.
|
| Perhaps you should switch your career goals over to something like
| business administration or sales. "Do you want fries with that order,
Sir?"
|
| Jim
|

Well.... I got it wrong......

By the way the correct question is. "Do you want chips with that?"

DNA

My first night in MA, I went to a pub in Cambridge that had a sign
advertising Steak and Chips, which I ordered with glee. The waitress
delivered my meal, and on the plate was a (delicious) steak, along with a
small packet of potato chips (crisps, as pommies would say). After sorting
out the lingual differences, the waitress and I had a good laugh, and she
brought me some french fries.

Cheers
Terry
 
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