Driver to drive?

Robert Baer wrote:
Jamie wrote:
John Larkin wrote:

On Sat, 20 Oct 2012 12:42:11 -0800, Robert Baer
robertbaer@localnet.com> wrote:


See similar title in a.b.s.electronic for PDF.
Almost took longer to document than to build..



This is my best birthday present.

https://dl.dropbox.com/u/53724080/Truckee/Birthday_Baer.jpg


grrrrrrrr.



how many pine trees had to be cut down to build that wall for you?

Jamie

If you were a true tree huger, you _would_ "pine" for them..
Click to expand...

He's just another sap...
 
On a sunny day (Mon, 29 Oct 2012 18:21:22 -0800) it happened Robert Baer
<robertbaer@localnet.com> wrote in <%QGjs.66$Ns4.53@newsfe09.iad>:

Perhaps, but us mortals with a limited budget cannot order umpteen
thousand feet of coax with a resistive center.
The P6015 used ten feet of coax with resistive center (direct quote
from manual).
Cannot say what its resistance is..i read 657 ohms end-to-end on the
cable, and the schematic states 150 ohms 10% at probe end, implying the
coax center is about 500 ohms (~5 ohms per foot).
Click to expand...
Personally for a one case, I would take normal coax,
pull the center conductor out,
and insert thinner resistance wire.
Should work for length of 1m or there about.

Not sure if that helps for your case.
 
On Tue, 30 Oct 2012 08:29:45 GMT, Jan Panteltje
<pNaonStpealmtje@yahoo.com> wrote:

On a sunny day (Mon, 29 Oct 2012 18:21:22 -0800) it happened Robert Baer
robertbaer@localnet.com> wrote in <%QGjs.66$Ns4.53@newsfe09.iad>:

Perhaps, but us mortals with a limited budget cannot order umpteen
thousand feet of coax with a resistive center.
The P6015 used ten feet of coax with resistive center (direct quote
from manual).
Cannot say what its resistance is..i read 657 ohms end-to-end on the
cable, and the schematic states 150 ohms 10% at probe end, implying the
coax center is about 500 ohms (~5 ohms per foot).

Personally for a one case, I would take normal coax,
pull the center conductor out,
and insert thinner resistance wire.
Should work for length of 1m or there about.

Not sure if that helps for your case.
Click to expand...
Yeah, like dragging the center conductor out of a meter long piece of
coax is an easy task, much less feeding another back through.

Standard RG-8 center conductor dielectric strength is 1.5kV.and they
are not easy to get out. Fairly tightly bound to the core media.

Probably cheaper to find and get the right stuff.
 
On Mon, 29 Oct 2012 18:07:28 -0800, Robert Baer wrote:

It has been a loooong time; Tektronix made two high voltage probes -
one with a significantly higher voltage rating.
The one i have _did_ have the liquid inside but that has slowly
leaked out over the ages; it is the P6015 rated at 20KV, 40KV peak.
I think that is the top end in voltage.
Click to expand...
Not any more. It has derated itself to about 12kV. It won't do 40kV
anymore without the fluorocarbon.

If you can get the 114 from somewhere, you can recharge it. See the manual.

--
"For a successful technology, reality must take precedence
over public relations, for nature cannot be fooled."
(Richard Feynman)
 
On Mon, 29 Oct 2012 18:21:22 -0800, Robert Baer wrote:

Perhaps, but us mortals with a limited budget cannot order umpteen
thousand feet of coax with a resistive center.
Click to expand...
Then do what I did, resistors at each end.

The P6015 used ten feet of coax with resistive center (direct quote
from manual).
Cannot say what its resistance is..i read 657 ohms end-to-end on the
cable, and the schematic states 150 ohms 10% at probe end, implying the
coax center is about 500 ohms (~5 ohms per foot).

Since you specified 75 ohm cable, the R should then be 75 ohms
instead of 60 ohms (pickie).
Click to expand...
Wrong. The value of 60 ohms was empirically determined from an .ac
analysis, with the resistor values stepped. See my LTspice listing, all
the necessary information is there, just uncomment the .step param card,
and comment (or delete) the 60 ohm R parameter. Pick the value which gives
the smoothest, flattest rolloff, at the HF end. Try without any resistors,
too, you'll see what I mean about resonance.

The value of R is *not* the Zo of the cable (which is complex,anyway).

--
"For a successful technology, reality must take precedence
over public relations, for nature cannot be fooled."
(Richard Feynman)
 
On Tue, 30 Oct 2012 00:40:38 -0400, "Michael A. Terrell"
<mike.terrell@earthlink.net> wrote:

Robert Baer wrote:

Jamie wrote:
John Larkin wrote:

On Sat, 20 Oct 2012 12:42:11 -0800, Robert Baer
robertbaer@localnet.com> wrote:


See similar title in a.b.s.electronic for PDF.
Almost took longer to document than to build..



This is my best birthday present.

https://dl.dropbox.com/u/53724080/Truckee/Birthday_Baer.jpg


grrrrrrrr.



how many pine trees had to be cut down to build that wall for you?

Jamie

If you were a true tree huger, you _would_ "pine" for them..


He's just another sap...
Click to expand...
It's not nice to needle people like that.


--

John Larkin Highland Technology Inc
www.highlandtechnology.com jlarkin at highlandtechnology dot com

Precision electronic instrumentation
Picosecond-resolution Digital Delay and Pulse generators
Custom timing and laser controllers
Photonics and fiberoptic TTL data links
VME analog, thermocouple, LVDT, synchro, tachometer
Multichannel arbitrary waveform generators
 
On Tue, 30 Oct 2012 02:45:03 -0700, Fred Abse
<excretatauris@invalid.invalid> wrote:

On Mon, 29 Oct 2012 18:07:28 -0800, Robert Baer wrote:

It has been a loooong time; Tektronix made two high voltage probes -
one with a significantly higher voltage rating.
The one i have _did_ have the liquid inside but that has slowly
leaked out over the ages; it is the P6015 rated at 20KV, 40KV peak.
I think that is the top end in voltage.

Not any more. It has derated itself to about 12kV. It won't do 40kV
anymore without the fluorocarbon.

If you can get the 114 from somewhere, you can recharge it. See the manual.
Click to expand...

DuPont (Ithought)(apperently 3M now) FC-40 also works. "Fluorinert"

http://multimedia.3m.com/mws/mediawebserver?66666UuZjcFSLXTtnxTEo8s6EVuQEcuZgVs6EVs6E666666%E2%80%94
 
On Tue, 30 Oct 2012 04:16:12 -0700, John Larkin
<jjlarkin@highNOTlandTHIStechnologyPART.com> wrote:

On Tue, 30 Oct 2012 00:40:38 -0400, "Michael A. Terrell"
mike.terrell@earthlink.net> wrote:


Robert Baer wrote:

Jamie wrote:
John Larkin wrote:

On Sat, 20 Oct 2012 12:42:11 -0800, Robert Baer
robertbaer@localnet.com> wrote:


See similar title in a.b.s.electronic for PDF.
Almost took longer to document than to build..



This is my best birthday present.

https://dl.dropbox.com/u/53724080/Truckee/Birthday_Baer.jpg


grrrrrrrr.



how many pine trees had to be cut down to build that wall for you?

Jamie

If you were a true tree huger, you _would_ "pine" for them..


He's just another sap...

It's not nice to needle people like that.
Click to expand...
Is "people like that" referring to the needling method or the "way" the
person is?
 
On Tue, 30 Oct 2012 04:16:12 -0700, John Larkin
<jjlarkin@highNOTlandTHIStechnologyPART.com> wrote:

On Tue, 30 Oct 2012 00:40:38 -0400, "Michael A. Terrell"
mike.terrell@earthlink.net> wrote:


Robert Baer wrote:

Jamie wrote:
John Larkin wrote:

On Sat, 20 Oct 2012 12:42:11 -0800, Robert Baer
robertbaer@localnet.com> wrote:


See similar title in a.b.s.electronic for PDF.
Almost took longer to document than to build..



This is my best birthday present.

https://dl.dropbox.com/u/53724080/Truckee/Birthday_Baer.jpg


grrrrrrrr.



how many pine trees had to be cut down to build that wall for you?

Jamie

If you were a true tree huger, you _would_ "pine" for them..


He's just another sap...

It's not nice to needle people like that.
Click to expand...
---
Still barking, I see.

--
JF
 
On Tue, 30 Oct 2012 04:48:23 -0700, TheGlimmerMan
<justaglimmer@thebarattheendoftheuniverse.org> wrote:

On Tue, 30 Oct 2012 04:16:12 -0700, John Larkin
jjlarkin@highNOTlandTHIStechnologyPART.com> wrote:

On Tue, 30 Oct 2012 00:40:38 -0400, "Michael A. Terrell"
mike.terrell@earthlink.net> wrote:


Robert Baer wrote:

Jamie wrote:
John Larkin wrote:

On Sat, 20 Oct 2012 12:42:11 -0800, Robert Baer
robertbaer@localnet.com> wrote:


See similar title in a.b.s.electronic for PDF.
Almost took longer to document than to build..



This is my best birthday present.

https://dl.dropbox.com/u/53724080/Truckee/Birthday_Baer.jpg


grrrrrrrr.



how many pine trees had to be cut down to build that wall for you?

Jamie

If you were a true tree huger, you _would_ "pine" for them..


He's just another sap...

It's not nice to needle people like that.

Is "people like that" referring to the needling method or the "way" the
person is?
Click to expand...
If you follow the logical tree, I guess the answer is "both."


--

John Larkin Highland Technology Inc
www.highlandtechnology.com jlarkin at highlandtechnology dot com

Precision electronic instrumentation
Picosecond-resolution Digital Delay and Pulse generators
Custom timing and laser controllers
Photonics and fiberoptic TTL data links
VME analog, thermocouple, LVDT, synchro, tachometer
Multichannel arbitrary waveform generators
 
On Tue, 30 Oct 2012 06:56:41 -0500, John Fields
<jfields@austininstruments.com> wrote:

On Tue, 30 Oct 2012 04:16:12 -0700, John Larkin
jjlarkin@highNOTlandTHIStechnologyPART.com> wrote:

On Tue, 30 Oct 2012 00:40:38 -0400, "Michael A. Terrell"
mike.terrell@earthlink.net> wrote:


Robert Baer wrote:

Jamie wrote:
John Larkin wrote:

On Sat, 20 Oct 2012 12:42:11 -0800, Robert Baer
robertbaer@localnet.com> wrote:


See similar title in a.b.s.electronic for PDF.
Almost took longer to document than to build..



This is my best birthday present.

https://dl.dropbox.com/u/53724080/Truckee/Birthday_Baer.jpg


grrrrrrrr.



how many pine trees had to be cut down to build that wall for you?

Jamie

If you were a true tree huger, you _would_ "pine" for them..


He's just another sap...

It's not nice to needle people like that.

---
Still barking, I see.
Click to expand...
Don't be such a conehead.


--

John Larkin Highland Technology Inc
www.highlandtechnology.com jlarkin at highlandtechnology dot com

Precision electronic instrumentation
Picosecond-resolution Digital Delay and Pulse generators
Custom timing and laser controllers
Photonics and fiberoptic TTL data links
VME analog, thermocouple, LVDT, synchro, tachometer
Multichannel arbitrary waveform generators
 
On 10/30/2012 6:56 AM, John Fields wrote:
On Tue, 30 Oct 2012 04:16:12 -0700, John Larkin
jjlarkin@highNOTlandTHIStechnologyPART.com> wrote:

On Tue, 30 Oct 2012 00:40:38 -0400, "Michael A. Terrell"
mike.terrell@earthlink.net> wrote:


Robert Baer wrote:

Jamie wrote:
John Larkin wrote:

On Sat, 20 Oct 2012 12:42:11 -0800, Robert Baer
robertbaer@localnet.com> wrote:


See similar title in a.b.s.electronic for PDF.
Almost took longer to document than to build..



This is my best birthday present.

https://dl.dropbox.com/u/53724080/Truckee/Birthday_Baer.jpg


grrrrrrrr.



how many pine trees had to be cut down to build that wall for you?

Jamie

If you were a true tree huger, you _would_ "pine" for them..


He's just another sap...

It's not nice to needle people like that.

---
Still barking, I see.

Root around long enough, and we'll find a pun.
Click to expand...
Mikek
 
On Tue, 30 Oct 2012 05:29:19 -0700, John Larkin
<jjlarkin@highNOTlandTHIStechnologyPART.com> wrote:

On Tue, 30 Oct 2012 06:56:41 -0500, John Fields
jfields@austininstruments.com> wrote:

On Tue, 30 Oct 2012 04:16:12 -0700, John Larkin
jjlarkin@highNOTlandTHIStechnologyPART.com> wrote:

On Tue, 30 Oct 2012 00:40:38 -0400, "Michael A. Terrell"
mike.terrell@earthlink.net> wrote:


Robert Baer wrote:

Jamie wrote:
John Larkin wrote:

On Sat, 20 Oct 2012 12:42:11 -0800, Robert Baer
robertbaer@localnet.com> wrote:


See similar title in a.b.s.electronic for PDF.
Almost took longer to document than to build..



This is my best birthday present.

https://dl.dropbox.com/u/53724080/Truckee/Birthday_Baer.jpg


grrrrrrrr.



how many pine trees had to be cut down to build that wall for you?

Jamie

If you were a true tree huger, you _would_ "pine" for them..


He's just another sap...

It's not nice to needle people like that.

---
Still barking, I see.

Don't be such a conehead.
Click to expand...
---
Trying to branch out of your area of expertise?

--
JF
 
John Larkin wrote:
Michael A. Terrell wrote:
?
?Robert Baer wrote:
?? ?
?? If you were a true tree huger, you _would_ "pine" for them..
?
? He's just another sap...

It's not nice to needle people like that.
Click to expand...

Do you think we should just leaf them alone?
 
On Tue, 30 Oct 2012 08:24:08 -0500, John Fields
<jfields@austininstruments.com> wrote:

On Tue, 30 Oct 2012 05:29:19 -0700, John Larkin
jjlarkin@highNOTlandTHIStechnologyPART.com> wrote:

On Tue, 30 Oct 2012 06:56:41 -0500, John Fields
jfields@austininstruments.com> wrote:

On Tue, 30 Oct 2012 04:16:12 -0700, John Larkin
jjlarkin@highNOTlandTHIStechnologyPART.com> wrote:

On Tue, 30 Oct 2012 00:40:38 -0400, "Michael A. Terrell"
mike.terrell@earthlink.net> wrote:


Robert Baer wrote:

Jamie wrote:
John Larkin wrote:

On Sat, 20 Oct 2012 12:42:11 -0800, Robert Baer
robertbaer@localnet.com> wrote:


See similar title in a.b.s.electronic for PDF.
Almost took longer to document than to build..



This is my best birthday present.

https://dl.dropbox.com/u/53724080/Truckee/Birthday_Baer.jpg


grrrrrrrr.



how many pine trees had to be cut down to build that wall for you?

Jamie

If you were a true tree huger, you _would_ "pine" for them..


He's just another sap...

It's not nice to needle people like that.

---
Still barking, I see.

Don't be such a conehead.

---
Trying to branch out of your area of expertise?
Click to expand...
Knot necessarily so.


--

John Larkin Highland Technology Inc
www.highlandtechnology.com jlarkin at highlandtechnology dot com

Precision electronic instrumentation
Picosecond-resolution Digital Delay and Pulse generators
Custom timing and laser controllers
Photonics and fiberoptic TTL data links
VME analog, thermocouple, LVDT, synchro, tachometer
Multichannel arbitrary waveform generators
 
On Tue, 30 Oct 2012 07:37:17 -0500, amdx <amdx@knologynotthis.net>
wrote:

On 10/30/2012 6:56 AM, John Fields wrote:
On Tue, 30 Oct 2012 04:16:12 -0700, John Larkin
jjlarkin@highNOTlandTHIStechnologyPART.com> wrote:

On Tue, 30 Oct 2012 00:40:38 -0400, "Michael A. Terrell"
mike.terrell@earthlink.net> wrote:


Robert Baer wrote:

Jamie wrote:
John Larkin wrote:

On Sat, 20 Oct 2012 12:42:11 -0800, Robert Baer
robertbaer@localnet.com> wrote:


See similar title in a.b.s.electronic for PDF.
Almost took longer to document than to build..



This is my best birthday present.

https://dl.dropbox.com/u/53724080/Truckee/Birthday_Baer.jpg


grrrrrrrr.



how many pine trees had to be cut down to build that wall for you?

Jamie

If you were a true tree huger, you _would_ "pine" for them..


He's just another sap...

It's not nice to needle people like that.

---
Still barking, I see.

Root around long enough, and we'll find a pun.
Mikek
Click to expand...

That stems from our basic need for humor.


--

John Larkin Highland Technology Inc
www.highlandtechnology.com jlarkin at highlandtechnology dot com

Precision electronic instrumentation
Picosecond-resolution Digital Delay and Pulse generators
Custom timing and laser controllers
Photonics and fiberoptic TTL data links
VME analog, thermocouple, LVDT, synchro, tachometer
Multichannel arbitrary waveform generators
 
On 10/30/2012 10:26 AM, John Larkin wrote:
On Tue, 30 Oct 2012 08:24:08 -0500, John Fields
jfields@austininstruments.com> wrote:

On Tue, 30 Oct 2012 05:29:19 -0700, John Larkin
jjlarkin@highNOTlandTHIStechnologyPART.com> wrote:

On Tue, 30 Oct 2012 06:56:41 -0500, John Fields
jfields@austininstruments.com> wrote:

On Tue, 30 Oct 2012 04:16:12 -0700, John Larkin
jjlarkin@highNOTlandTHIStechnologyPART.com> wrote:

On Tue, 30 Oct 2012 00:40:38 -0400, "Michael A. Terrell"
mike.terrell@earthlink.net> wrote:


Robert Baer wrote:

Jamie wrote:
John Larkin wrote:

On Sat, 20 Oct 2012 12:42:11 -0800, Robert Baer
robertbaer@localnet.com> wrote:


See similar title in a.b.s.electronic for PDF.
Almost took longer to document than to build..



This is my best birthday present.

https://dl.dropbox.com/u/53724080/Truckee/Birthday_Baer.jpg


grrrrrrrr.



how many pine trees had to be cut down to build that wall for you?

Jamie

If you were a true tree huger, you _would_ "pine" for them..


He's just another sap...

It's not nice to needle people like that.

---
Still barking, I see.

Don't be such a conehead.

---
Trying to branch out of your area of expertise?

Knot necessarily so.


Yew guys conifer control yourselves.
Click to expand...

Cheers

Phil Hobbs
 
On Tue, 30 Oct 2012 10:01:24 -0400 "Michael A. Terrell"
<mike.terrell@earthlink.net> wrote in Message id:
<vNOdnTmmh4AmQBLNnZ2dnUVZ_gudnZ2d@earthlink.com>:

John Larkin wrote:

Michael A. Terrell wrote:
?
?Robert Baer wrote:
?? ?
?? If you were a true tree huger, you _would_ "pine" for them..
?
? He's just another sap...

It's not nice to needle people like that.


Do you think we should just leaf them alone?
Click to expand...
I Woodn't.
 
On Tue, 30 Oct 2012 10:47:33 -0400, Phil Hobbs
<pcdhSpamMeSenseless@electrooptical.net> wrote:

On 10/30/2012 10:26 AM, John Larkin wrote:
On Tue, 30 Oct 2012 08:24:08 -0500, John Fields
jfields@austininstruments.com> wrote:

On Tue, 30 Oct 2012 05:29:19 -0700, John Larkin
jjlarkin@highNOTlandTHIStechnologyPART.com> wrote:

On Tue, 30 Oct 2012 06:56:41 -0500, John Fields
jfields@austininstruments.com> wrote:

On Tue, 30 Oct 2012 04:16:12 -0700, John Larkin
jjlarkin@highNOTlandTHIStechnologyPART.com> wrote:

On Tue, 30 Oct 2012 00:40:38 -0400, "Michael A. Terrell"
mike.terrell@earthlink.net> wrote:


Robert Baer wrote:

Jamie wrote:
John Larkin wrote:

On Sat, 20 Oct 2012 12:42:11 -0800, Robert Baer
robertbaer@localnet.com> wrote:


See similar title in a.b.s.electronic for PDF.
Almost took longer to document than to build..



This is my best birthday present.

https://dl.dropbox.com/u/53724080/Truckee/Birthday_Baer.jpg


grrrrrrrr.



how many pine trees had to be cut down to build that wall for you?

Jamie

If you were a true tree huger, you _would_ "pine" for them..


He's just another sap...

It's not nice to needle people like that.

---
Still barking, I see.

Don't be such a conehead.

---
Trying to branch out of your area of expertise?

Knot necessarily so.


Yew guys conifer control yourselves.
Click to expand...
Deciduously not.
 
On Tue, 30 Oct 2012 05:29:19 -0700, John Larkin
<jjlarkin@highNOTlandTHIStechnologyPART.com> wrote:

On Tue, 30 Oct 2012 06:56:41 -0500, John Fields
jfields@austininstruments.com> wrote:

On Tue, 30 Oct 2012 04:16:12 -0700, John Larkin
jjlarkin@highNOTlandTHIStechnologyPART.com> wrote:

On Tue, 30 Oct 2012 00:40:38 -0400, "Michael A. Terrell"
mike.terrell@earthlink.net> wrote:


Robert Baer wrote:

Jamie wrote:
John Larkin wrote:

On Sat, 20 Oct 2012 12:42:11 -0800, Robert Baer
robertbaer@localnet.com> wrote:


See similar title in a.b.s.electronic for PDF.
Almost took longer to document than to build..



This is my best birthday present.

https://dl.dropbox.com/u/53724080/Truckee/Birthday_Baer.jpg


grrrrrrrr.



how many pine trees had to be cut down to build that wall for you?

Jamie

If you were a true tree huger, you _would_ "pine" for them..


He's just another sap...

It's not nice to needle people like that.

---
Still barking, I see.

Don't be such a conehead.
Click to expand...
I think you've found the root of the problem.
 
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