Tek Concepts books...

[Phil Hobbs]

The Tek power supply thread reminded me of these interesting old books,
some of which are still an excellent read.

https://www.davmar.org/concepts.html

My fave is Bob Orwiler\'s Vertical Amplifiers Concepts,
<https://www.davmar.org/TE/TekConcepts/TekVertAmpCircuits.pdf>.

(The Power Supply Circuits book is too old to be much use, though it
does talk about switchers a bit.)

Cheers

Phil Hobbs

--
Dr Philip C D Hobbs
Principal Consultant
ElectroOptical Innovations LLC / Hobbs ElectroOptics
Optics, Electro-optics, Photonics, Analog Electronics
Briarcliff Manor NY 10510

http://electrooptical.net
http://hobbs-eo.com

 

[John Larkin]

On Tue, 2 May 2023 10:39:28 -0400, Phil Hobbs
<pcdhSpamMeSenseless@electrooptical.net> wrote:

The Tek power supply thread reminded me of these interesting old books,
some of which are still an excellent read.

https://www.davmar.org/concepts.html

My fave is Bob Orwiler\'s Vertical Amplifiers Concepts,
https://www.davmar.org/TE/TekConcepts/TekVertAmpCircuits.pdf>.

(The Power Supply Circuits book is too old to be much use, though it
does talk about switchers a bit.)

Cheers

Phil Hobbs

I have most of those in print. I liked their beautiful hand-drawn
schematic styles, some with tekdoodles.

The HP schematics were prim and boring.

Neither had discovered netnames.

 

[Fred Bloggs]

On Tuesday, May 2, 2023 at 10:39:46 AM UTC-4, Phil Hobbs wrote:

The Tek power supply thread reminded me of these interesting old books,
some of which are still an excellent read.

https://www.davmar.org/concepts.html

My fave is Bob Orwiler\'s Vertical Amplifiers Concepts,
https://www.davmar.org/TE/TekConcepts/TekVertAmpCircuits.pdf>.

(The Power Supply Circuits book is too old to be much use, though it
does talk about switchers a bit.)

Dunno about those particulars, I don\'t think, but the older Tek documentation gave excellent illustrations of higher complexity electronic subsystems are conceived in the first place. They were a mix of electronic components and function blocks, the only way to do it.

Cheers

Phil Hobbs

--
Dr Philip C D Hobbs
Principal Consultant
ElectroOptical Innovations LLC / Hobbs ElectroOptics
Optics, Electro-optics, Photonics, Analog Electronics
Briarcliff Manor NY 10510

http://electrooptical.net
http://hobbs-eo.com

 

[Phil Hobbs]

On 2023-05-02 11:15, Fred Bloggs wrote:

On Tuesday, May 2, 2023 at 10:39:46 AM UTC-4, Phil Hobbs wrote:
The Tek power supply thread reminded me of these interesting old
books, some of which are still an excellent read.

https://www.davmar.org/concepts.html

My fave is Bob Orwiler\'s Vertical Amplifiers Concepts,
https://www.davmar.org/TE/TekConcepts/TekVertAmpCircuits.pdf>.

(The Power Supply Circuits book is too old to be much use, though
it does talk about switchers a bit.)

Dunno about those particulars, I don\'t think, but the older Tek
documentation gave excellent illustrations of higher complexity
electronic subsystems are conceived in the first place. They were a
mix of electronic components and function blocks, the only way to do
it.

The Sampling Oscilloscope Circuits one is also a very good read even
today--the notion of the sampling loop, where you feed back the
previously sampled value to reduce the size of the settling step, is
still very useful.

Generally the cool thing about the old Tektronix was that they made
fast, clean measurement tools using the same components everybody else
had. Stuff like the f_T doubler, constant-resistance T-coil, cascomp
amplifier, maximum-power point biasing(*), distributed deflection tubes,
and on and on.

Magic.

Cheers

Phil Hobbs

(*) As opposed to the modern approach, i.e. maximum PowerPoint.

--
Dr Philip C D Hobbs
Principal Consultant
ElectroOptical Innovations LLC / Hobbs ElectroOptics
Optics, Electro-optics, Photonics, Analog Electronics
Briarcliff Manor NY 10510

http://electrooptical.net
http://hobbs-eo.com

 

[John Larkin]

On Tue, 2 May 2023 11:36:58 -0400, Phil Hobbs
<pcdhSpamMeSenseless@electrooptical.net> wrote:

On 2023-05-02 11:15, Fred Bloggs wrote:
On Tuesday, May 2, 2023 at 10:39:46?AM UTC-4, Phil Hobbs wrote:
The Tek power supply thread reminded me of these interesting old
books, some of which are still an excellent read.

https://www.davmar.org/concepts.html

My fave is Bob Orwiler\'s Vertical Amplifiers Concepts,
https://www.davmar.org/TE/TekConcepts/TekVertAmpCircuits.pdf>.

(The Power Supply Circuits book is too old to be much use, though
it does talk about switchers a bit.)

Dunno about those particulars, I don\'t think, but the older Tek
documentation gave excellent illustrations of higher complexity
electronic subsystems are conceived in the first place. They were a
mix of electronic components and function blocks, the only way to do
it.


The Sampling Oscilloscope Circuits one is also a very good read even
today--the notion of the sampling loop, where you feed back the
previously sampled value to reduce the size of the settling step, is
still very useful.

Generally the cool thing about the old Tektronix was that they made
fast, clean measurement tools using the same components everybody else
had. Stuff like the f_T doubler, constant-resistance T-coil, cascomp
amplifier, maximum-power point biasing(*), distributed deflection tubes,
and on and on.

Magic.

Cheers

Phil Hobbs

(*) As opposed to the modern approach, i.e. maximum PowerPoint.

Their differential comparator plugins (Z, W, 1Asomething) were
astounding. You could zoom the top of a 100 volt pulse to mV/div.

Here\'s the CRT from a 547:

https://www.dropbox.com/s/evoq6p2nvzyl6wo/547_crt.JPG?raw=1

It\'s a beautiful piece of glass.

This isn\'t as pretty. It\'s from the 519, the monster 1 GHz scope that
had no vertical amp.

https://www.dropbox.com/s/r6c3zkwlqrayt53/519_CRT.JPG?raw=1

I dug that out of an old scope, out in the rain, in a parking lot in
Los Alamos.

The horizontal deflection amp was a transmitting tube, a 2CX250 or
something.

 

[Phil Hobbs]

On 2023-05-02 19:27, John Larkin wrote:

On Tue, 2 May 2023 11:36:58 -0400, Phil Hobbs
pcdhSpamMeSenseless@electrooptical.net> wrote:

On 2023-05-02 11:15, Fred Bloggs wrote:
On Tuesday, May 2, 2023 at 10:39:46?AM UTC-4, Phil Hobbs wrote:
The Tek power supply thread reminded me of these interesting old
books, some of which are still an excellent read.

https://www.davmar.org/concepts.html

My fave is Bob Orwiler\'s Vertical Amplifiers Concepts,
https://www.davmar.org/TE/TekConcepts/TekVertAmpCircuits.pdf>.

(The Power Supply Circuits book is too old to be much use, though
it does talk about switchers a bit.)

Dunno about those particulars, I don\'t think, but the older Tek
documentation gave excellent illustrations of higher complexity
electronic subsystems are conceived in the first place. They were a
mix of electronic components and function blocks, the only way to do
it.


The Sampling Oscilloscope Circuits one is also a very good read even
today--the notion of the sampling loop, where you feed back the
previously sampled value to reduce the size of the settling step, is
still very useful.

Generally the cool thing about the old Tektronix was that they made
fast, clean measurement tools using the same components everybody else
had. Stuff like the f_T doubler, constant-resistance T-coil, cascomp
amplifier, maximum-power point biasing(*), distributed deflection tubes,
and on and on.

Magic.

Cheers

Phil Hobbs

(*) As opposed to the modern approach, i.e. maximum PowerPoint.

Their differential comparator plugins (Z, W, 1Asomething) were
astounding. You could zoom the top of a 100 volt pulse to mV/div.

Here\'s the CRT from a 547:

https://www.dropbox.com/s/evoq6p2nvzyl6wo/547_crt.JPG?raw=1

It\'s a beautiful piece of glass.

This isn\'t as pretty. It\'s from the 519, the monster 1 GHz scope that
had no vertical amp.

https://www.dropbox.com/s/r6c3zkwlqrayt53/519_CRT.JPG?raw=1

I dug that out of an old scope, out in the rain, in a parking lot in
Los Alamos.

The horizontal deflection amp was a transmitting tube, a 2CX250 or
something.

I wouldn\'t have wanted the guy who had to stand in the vacuum chamber
adjusting those things before they put the envelopes on.

Cheers

Phil Hobbs

--
Dr Philip C D Hobbs
Principal Consultant
ElectroOptical Innovations LLC / Hobbs ElectroOptics
Optics, Electro-optics, Photonics, Analog Electronics
Briarcliff Manor NY 10510

http://electrooptical.net
http://hobbs-eo.com

 

[John Larkin]

On Tue, 2 May 2023 20:11:09 -0400, Phil Hobbs
<pcdhSpamMeSenseless@electrooptical.net> wrote:

On 2023-05-02 19:27, John Larkin wrote:
On Tue, 2 May 2023 11:36:58 -0400, Phil Hobbs
pcdhSpamMeSenseless@electrooptical.net> wrote:

On 2023-05-02 11:15, Fred Bloggs wrote:
On Tuesday, May 2, 2023 at 10:39:46?AM UTC-4, Phil Hobbs wrote:
The Tek power supply thread reminded me of these interesting old
books, some of which are still an excellent read.

https://www.davmar.org/concepts.html

My fave is Bob Orwiler\'s Vertical Amplifiers Concepts,
https://www.davmar.org/TE/TekConcepts/TekVertAmpCircuits.pdf>.

(The Power Supply Circuits book is too old to be much use, though
it does talk about switchers a bit.)

Dunno about those particulars, I don\'t think, but the older Tek
documentation gave excellent illustrations of higher complexity
electronic subsystems are conceived in the first place. They were a
mix of electronic components and function blocks, the only way to do
it.


The Sampling Oscilloscope Circuits one is also a very good read even
today--the notion of the sampling loop, where you feed back the
previously sampled value to reduce the size of the settling step, is
still very useful.

Generally the cool thing about the old Tektronix was that they made
fast, clean measurement tools using the same components everybody else
had. Stuff like the f_T doubler, constant-resistance T-coil, cascomp
amplifier, maximum-power point biasing(*), distributed deflection tubes,
and on and on.

Magic.

Cheers

Phil Hobbs

(*) As opposed to the modern approach, i.e. maximum PowerPoint.

Their differential comparator plugins (Z, W, 1Asomething) were
astounding. You could zoom the top of a 100 volt pulse to mV/div.

Here\'s the CRT from a 547:

https://www.dropbox.com/s/evoq6p2nvzyl6wo/547_crt.JPG?raw=1

It\'s a beautiful piece of glass.

This isn\'t as pretty. It\'s from the 519, the monster 1 GHz scope that
had no vertical amp.

https://www.dropbox.com/s/r6c3zkwlqrayt53/519_CRT.JPG?raw=1

I dug that out of an old scope, out in the rain, in a parking lot in
Los Alamos.

The horizontal deflection amp was a transmitting tube, a 2CX250 or
something.


I wouldn\'t have wanted the guy who had to stand in the vacuum chamber
adjusting those things before they put the envelopes on.

I wonder how they tuned that delay line too. Maybe TDR in open air?

Cheers

Phil Hobbs

Los Alamos had racks full of their own custom 8-beam scope which they
took Polaroids of to record many channels of a one-shot event. Before
digitizers got good enough.

They also had an x-ray pulser, an L shape, two linear induction
electron accelerators a quarter mile long each.

 

[Tauno Voipio]

On 3.5.2023 2.27, John Larkin wrote:

On Tue, 2 May 2023 11:36:58 -0400, Phil Hobbs
pcdhSpamMeSenseless@electrooptical.net> wrote:

On 2023-05-02 11:15, Fred Bloggs wrote:
On Tuesday, May 2, 2023 at 10:39:46?AM UTC-4, Phil Hobbs wrote:
The Tek power supply thread reminded me of these interesting old
books, some of which are still an excellent read.

https://www.davmar.org/concepts.html

My fave is Bob Orwiler\'s Vertical Amplifiers Concepts,
https://www.davmar.org/TE/TekConcepts/TekVertAmpCircuits.pdf>.

(The Power Supply Circuits book is too old to be much use, though
it does talk about switchers a bit.)

Dunno about those particulars, I don\'t think, but the older Tek
documentation gave excellent illustrations of higher complexity
electronic subsystems are conceived in the first place. They were a
mix of electronic components and function blocks, the only way to do
it.


The Sampling Oscilloscope Circuits one is also a very good read even
today--the notion of the sampling loop, where you feed back the
previously sampled value to reduce the size of the settling step, is
still very useful.

Generally the cool thing about the old Tektronix was that they made
fast, clean measurement tools using the same components everybody else
had. Stuff like the f_T doubler, constant-resistance T-coil, cascomp
amplifier, maximum-power point biasing(*), distributed deflection tubes,
and on and on.

Magic.

Cheers

Phil Hobbs

(*) As opposed to the modern approach, i.e. maximum PowerPoint.

Their differential comparator plugins (Z, W, 1Asomething) were
astounding. You could zoom the top of a 100 volt pulse to mV/div.

Here\'s the CRT from a 547:

https://www.dropbox.com/s/evoq6p2nvzyl6wo/547_crt.JPG?raw=1

It\'s a beautiful piece of glass.

This isn\'t as pretty. It\'s from the 519, the monster 1 GHz scope that
had no vertical amp.

https://www.dropbox.com/s/r6c3zkwlqrayt53/519_CRT.JPG?raw=1

I dug that out of an old scope, out in the rain, in a parking lot in
Los Alamos.

The horizontal deflection amp was a transmitting tube, a 2CX250 or
something.

2CX250 would be a diode, AFAIK there is no such. I\'d guess 4CX250A.

The Eimac transmitting tubes had plenty coded into the type marking:
- 4: tetrode,
- C: ceramic sleeve, instead of glass,
- X: external anode
- 250: max anode dissipation 250 W
- A: first re-design version

--

-TV

 

[John Larkin]

On Wed, 3 May 2023 10:58:31 +0300, Tauno Voipio
<tauno.voipio@notused.fi.invalid> wrote:

On 3.5.2023 2.27, John Larkin wrote:
On Tue, 2 May 2023 11:36:58 -0400, Phil Hobbs
pcdhSpamMeSenseless@electrooptical.net> wrote:

On 2023-05-02 11:15, Fred Bloggs wrote:
On Tuesday, May 2, 2023 at 10:39:46?AM UTC-4, Phil Hobbs wrote:
The Tek power supply thread reminded me of these interesting old
books, some of which are still an excellent read.

https://www.davmar.org/concepts.html

My fave is Bob Orwiler\'s Vertical Amplifiers Concepts,
https://www.davmar.org/TE/TekConcepts/TekVertAmpCircuits.pdf>.

(The Power Supply Circuits book is too old to be much use, though
it does talk about switchers a bit.)

Dunno about those particulars, I don\'t think, but the older Tek
documentation gave excellent illustrations of higher complexity
electronic subsystems are conceived in the first place. They were a
mix of electronic components and function blocks, the only way to do
it.


The Sampling Oscilloscope Circuits one is also a very good read even
today--the notion of the sampling loop, where you feed back the
previously sampled value to reduce the size of the settling step, is
still very useful.

Generally the cool thing about the old Tektronix was that they made
fast, clean measurement tools using the same components everybody else
had. Stuff like the f_T doubler, constant-resistance T-coil, cascomp
amplifier, maximum-power point biasing(*), distributed deflection tubes,
and on and on.

Magic.

Cheers

Phil Hobbs

(*) As opposed to the modern approach, i.e. maximum PowerPoint.

Their differential comparator plugins (Z, W, 1Asomething) were
astounding. You could zoom the top of a 100 volt pulse to mV/div.

Here\'s the CRT from a 547:

https://www.dropbox.com/s/evoq6p2nvzyl6wo/547_crt.JPG?raw=1

It\'s a beautiful piece of glass.

This isn\'t as pretty. It\'s from the 519, the monster 1 GHz scope that
had no vertical amp.

https://www.dropbox.com/s/r6c3zkwlqrayt53/519_CRT.JPG?raw=1

I dug that out of an old scope, out in the rain, in a parking lot in
Los Alamos.

The horizontal deflection amp was a transmitting tube, a 2CX250 or
something.


2CX250 would be a diode, AFAIK there is no such. I\'d guess 4CX250A.

The Eimac transmitting tubes had plenty coded into the type marking:
- 4: tetrode,
- C: ceramic sleeve, instead of glass,
- X: external anode
- 250: max anode dissipation 250 W
- A: first re-design version

That\'s probably it. The giant jug actually generates the sweep ramp.

https://www.dropbox.com/s/a3dh9ig3qnvgrka/Tek_519_sweep.jpg?raw=1

A very weird oscilloscope.

https://w140.com/tekwiki/wiki/519

I considered adding one to my collection, but it\'s huge and very heavy
and very ugly.

Look at those specs!

I see one on sale for $4300.

 

[Tauno Voipio]

On 3.5.2023 15.08, John Larkin wrote:

On Wed, 3 May 2023 10:58:31 +0300, Tauno Voipio
tauno.voipio@notused.fi.invalid> wrote:

On 3.5.2023 2.27, John Larkin wrote:
On Tue, 2 May 2023 11:36:58 -0400, Phil Hobbs
pcdhSpamMeSenseless@electrooptical.net> wrote:

On 2023-05-02 11:15, Fred Bloggs wrote:
On Tuesday, May 2, 2023 at 10:39:46?AM UTC-4, Phil Hobbs wrote:
The Tek power supply thread reminded me of these interesting old
books, some of which are still an excellent read.

https://www.davmar.org/concepts.html

My fave is Bob Orwiler\'s Vertical Amplifiers Concepts,
https://www.davmar.org/TE/TekConcepts/TekVertAmpCircuits.pdf>.

(The Power Supply Circuits book is too old to be much use, though
it does talk about switchers a bit.)

Dunno about those particulars, I don\'t think, but the older Tek
documentation gave excellent illustrations of higher complexity
electronic subsystems are conceived in the first place. They were a
mix of electronic components and function blocks, the only way to do
it.


The Sampling Oscilloscope Circuits one is also a very good read even
today--the notion of the sampling loop, where you feed back the
previously sampled value to reduce the size of the settling step, is
still very useful.

Generally the cool thing about the old Tektronix was that they made
fast, clean measurement tools using the same components everybody else
had. Stuff like the f_T doubler, constant-resistance T-coil, cascomp
amplifier, maximum-power point biasing(*), distributed deflection tubes,
and on and on.

Magic.

Cheers

Phil Hobbs

(*) As opposed to the modern approach, i.e. maximum PowerPoint.

Their differential comparator plugins (Z, W, 1Asomething) were
astounding. You could zoom the top of a 100 volt pulse to mV/div.

Here\'s the CRT from a 547:

https://www.dropbox.com/s/evoq6p2nvzyl6wo/547_crt.JPG?raw=1

It\'s a beautiful piece of glass.

This isn\'t as pretty. It\'s from the 519, the monster 1 GHz scope that
had no vertical amp.

https://www.dropbox.com/s/r6c3zkwlqrayt53/519_CRT.JPG?raw=1

I dug that out of an old scope, out in the rain, in a parking lot in
Los Alamos.

The horizontal deflection amp was a transmitting tube, a 2CX250 or
something.


2CX250 would be a diode, AFAIK there is no such. I\'d guess 4CX250A.

The Eimac transmitting tubes had plenty coded into the type marking:
- 4: tetrode,
- C: ceramic sleeve, instead of glass,
- X: external anode
- 250: max anode dissipation 250 W
- A: first re-design version

That\'s probably it. The giant jug actually generates the sweep ramp.

The F version has different heater voltage, 26.5 V.

The tube is a smalish transmitting tube, 42 mmm dia by 47 mm high.
For the giant jugs, start at 4CX35000, or glass tubes from 1 kW up.

--

-TV

 

[The Scientist]

😘 😗 😙 😚 😋 😀 😃 😄 😁 😇 🙂 🙃 😉 😌 😍 🥰 😘 😗 😙 😚 😋 😛 😝 😜 🤪 🤨 🧐 🤓 😎 🥸 🤩 🥳 😏 😒 😞 😔 😟 😕 🙁 ☹️ 😣 😝 😜 🤪 🤨 😕 🙁 😕 🙁 ☹️ 😣 😖 😫 😩 🥺😀 😃 😄 😁 😆 😅 😂 🤣 🥲 😊 😇 🙂 🙃 😉 🥲 😊 😇🙁 ☹️ 😣 😖 😫 😩 🥺😀 😃 😄 😁 😆 😅 😂 🤣 🥲 😊 😇 🙂 🙃 😉 🥲 😊 😝 😜 🤪 🤨 🧐 🤓 😎 🥸 🤩 🥳 😏 😒 😞 😔 😟 😕 🙁 ☹️ 😣 😝 😜 🤪 🤨 😕 🙁 😕 😌 😍 🥰 😘 😗 😙 😚 😋 😀 😃 😄 😁 😇 🙂 🙃 😉 😌 😍 🥰 😘 😗 😙 😚 😋 😛 😝 😜 🤪 🤨 🧐 🤓 😎 🥸 🤩 🥳 😏 😒 😞 😔 😟 😕 🙁 ☹️ 😣 😝 😜 🤪 🤨 😕 😖 😫 😩 🥺😀 😃 😄 😁 😆 😅 😂 🤣 🥲 😊 😇 🙂 🙃 😉 🥲 😊 😇🙁 ☹️ 😣 😖 😫

 

[John Larkin]

On Sat, 6 May 2023 12:26:30 -0700 (PDT), The Scientist
<thegreatestscientistoftheworld@hotmail.com> wrote:

> ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?? ? ? ? ? ? ? ? ? ? ?? ? ? ? ? ?? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?? ?? ? ? ? ? ?? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?? ? ? ? ? ? ? ? ? ? ?? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?? ?? ? ? ?

Thanks. Very scientific.

 

[Anthony William Sloman]

On Sunday, May 7, 2023 at 5:57:33 AM UTC+10, John Larkin wrote:

On Sat, 6 May 2023 12:26:30 -0700 (PDT), The Scientist
thegreatestscie...@hotmail.com> wrote:

? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?? ? ? ? ? ? ? ? ? ? ?? ? ? ? ? ?? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?? ?? ? ? ? ? ?? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?? ? ? ? ? ? ? ? ? ? ?? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?? ?? ? ? ?

Thanks. Very scientific.

Before you can call yourself a scientist you do have to have published a paper in a peer-reviewed sceintific journal and have seen it cited by somebody else.

I made it with my very first publication - which was a mere comment, back in 1972. It got cited by A T Young in Methods in Experimental Physics, in 1974.

I didn\'t know about the citation until Phil Hobbes pointed it out some thirty years later

--
Bill Sloman, Sydney