Date   

Re: A Vacuum Tube Curve Tracer for all Tek Semiconductor Curve Trace

n4buq
 

Given the image shows a part that's used, I assume RFE means"Removed From Equipment".

Thanks,
Barry - N4BUQ

----- Original Message -----
From: "Barry n4buq@knology.net [TekScopes]" <TekScopes@yahoogroups.com>
To: TekScopes@yahoogroups.com
Sent: Tuesday, March 28, 2017 10:18:21 AM
Subject: Re: [TekScopes] Re: A Vacuum Tube Curve Tracer for all Tek Semiconductor Curve Trace

Leeds lists them but not sure if they're stocked.

If you follow the "+" link beside this entry at
http://www.leedsradio.com/parts-sockets.html

7 pin minature plug - fits sockets for 1L6, 6AU6 etc
good for making tube adapters, test jigs (rfe)

It shows the following image:

http://www.leedsradio.com/images-sockets/plug-7pin.JPG

It doesn't show a price so I assume they're out of stock. Not sure what
"(rfe)" means but it shows by several items that do have prices so I don't
think its an indication of out of stock.

Thanks,
Barry - N4BUQ

----- Original Message -----
From: "'Dennis Tillman' dennis@ridesoft.com [TekScopes]"
<TekScopes@yahoogroups.com>
To: TekScopes@yahoogroups.com
Sent: Tuesday, March 28, 2017 9:55:48 AM
Subject: RE: [TekScopes] Re: A Vacuum Tube Curve Tracer for all Tek
Semiconductor Curve Trace

Hi Colin,
9-pin socket savers are available from every tube site I have checked. They
are even available direct from the manufacturers via Alibaba. The ones that
are impossible to find are the 7-pin. Those seem to be obsolete. No one is
making them. A few places have old stock at outrageous prices.
Dennis Tillman W7PF

-----Original Message-----
Sent: Tuesday, March 28, 2017 6:58 AM
Subject: RE: [TekScopes] Re: A Vacuum Tube Curve Tracer for all Tek
Semiconductor Curve Trace

Dennis,
Is this any good to you?
http://www.tubeampdoctor.com/en/shop_Tube_sockets_and_Accessories_9_PIN_tube
_socket/Novalplug_Noval_tube_base_adapter_2163
The price seems reasonable.

Colin.

Sent: 28 March 2017 06:25
Subject: RE: [TekScopes] Re: A Vacuum Tube Curve Tracer for all Tek
Semiconductor Curve Trace

Hi Dave,
Thank you for your offer but for the moment I think I have a better
solution. The pins coming out of a tube base are about 1/4" (6.8mm). If I
try to push a longer pin into a tube socket it bottoms out at about 0.28"
(7.25mm). So I'm concerned that the 12mm pin length you have will cause
problems.

I have found a workable solution. Vector still makes pins that are the
right
diameter and approximately the right length. They are meant to be pressed
into place in a PC Board through hole and then soldered to the pad
surrounding the hole. Since the vacuum tube curve tracer I was making will
ultimately be built on a printed circuit board I can work out a way to use
the Vector pins I found.

Dennis Tillman W7PF
------------------------------------
Posted by: "Colin Herbert" <colingherbert@blueyonder.co.uk>
------------------------------------



400-series knob replacement or repair

Colin Herbert
 

Hi,
I've made this query wide-ranging, but it should become obvious why. I have a 468 DSO which I am trying to calibrate. It is a bit of a nuisance that the Volts/Div knob on Channel 2 has some markings which are obliterated. This 'scope has rather different markings from other Volts/Div knobs in the 400-series, so I can't use one from a parts mule 466 (or any other). My question, then, is does anyone have one of these knobs with its markings intact that they could sell me, or can anyone offer any advice as to how to restore the markings?
TIA, Colin.


Re: A Vacuum Tube Curve Tracer for all Tek Semiconductor Curve Trace

n4buq
 

Leeds lists them but not sure if they're stocked.

If you follow the "+" link beside this entry at http://www.leedsradio.com/parts-sockets.html

7 pin minature plug - fits sockets for 1L6, 6AU6 etc
good for making tube adapters, test jigs (rfe)

It shows the following image:

http://www.leedsradio.com/images-sockets/plug-7pin.JPG

It doesn't show a price so I assume they're out of stock. Not sure what "(rfe)" means but it shows by several items that do have prices so I don't think its an indication of out of stock.

Thanks,
Barry - N4BUQ

----- Original Message -----
From: "'Dennis Tillman' dennis@ridesoft.com [TekScopes]" <TekScopes@yahoogroups.com>
To: TekScopes@yahoogroups.com
Sent: Tuesday, March 28, 2017 9:55:48 AM
Subject: RE: [TekScopes] Re: A Vacuum Tube Curve Tracer for all Tek Semiconductor Curve Trace

Hi Colin,
9-pin socket savers are available from every tube site I have checked. They
are even available direct from the manufacturers via Alibaba. The ones that
are impossible to find are the 7-pin. Those seem to be obsolete. No one is
making them. A few places have old stock at outrageous prices.
Dennis Tillman W7PF

-----Original Message-----
Sent: Tuesday, March 28, 2017 6:58 AM
Subject: RE: [TekScopes] Re: A Vacuum Tube Curve Tracer for all Tek
Semiconductor Curve Trace

Dennis,
Is this any good to you?
http://www.tubeampdoctor.com/en/shop_Tube_sockets_and_Accessories_9_PIN_tube
_socket/Novalplug_Noval_tube_base_adapter_2163
The price seems reasonable.

Colin.

Sent: 28 March 2017 06:25
Subject: RE: [TekScopes] Re: A Vacuum Tube Curve Tracer for all Tek
Semiconductor Curve Trace

Hi Dave,
Thank you for your offer but for the moment I think I have a better
solution. The pins coming out of a tube base are about 1/4" (6.8mm). If I
try to push a longer pin into a tube socket it bottoms out at about 0.28"
(7.25mm). So I'm concerned that the 12mm pin length you have will cause
problems.

I have found a workable solution. Vector still makes pins that are the right
diameter and approximately the right length. They are meant to be pressed
into place in a PC Board through hole and then soldered to the pad
surrounding the hole. Since the vacuum tube curve tracer I was making will
ultimately be built on a printed circuit board I can work out a way to use
the Vector pins I found.

Dennis Tillman W7PF
------------------------------------
Posted by: "Colin Herbert" <colingherbert@blueyonder.co.uk>
------------------------------------



Re: A Vacuum Tube Curve Tracer for all Tek Semiconductor Curve Trace

 

Hi Colin,
9-pin socket savers are available from every tube site I have checked. They
are even available direct from the manufacturers via Alibaba. The ones that
are impossible to find are the 7-pin. Those seem to be obsolete. No one is
making them. A few places have old stock at outrageous prices.
Dennis Tillman W7PF

-----Original Message-----
Sent: Tuesday, March 28, 2017 6:58 AM
Subject: RE: [TekScopes] Re: A Vacuum Tube Curve Tracer for all Tek
Semiconductor Curve Trace

Dennis,
Is this any good to you?
http://www.tubeampdoctor.com/en/shop_Tube_sockets_and_Accessories_9_PIN_tube
_socket/Novalplug_Noval_tube_base_adapter_2163
The price seems reasonable.

Colin.

Sent: 28 March 2017 06:25
Subject: RE: [TekScopes] Re: A Vacuum Tube Curve Tracer for all Tek
Semiconductor Curve Trace

Hi Dave,
Thank you for your offer but for the moment I think I have a better
solution. The pins coming out of a tube base are about 1/4" (6.8mm). If I
try to push a longer pin into a tube socket it bottoms out at about 0.28"
(7.25mm). So I'm concerned that the 12mm pin length you have will cause
problems.

I have found a workable solution. Vector still makes pins that are the right
diameter and approximately the right length. They are meant to be pressed
into place in a PC Board through hole and then soldered to the pad
surrounding the hole. Since the vacuum tube curve tracer I was making will
ultimately be built on a printed circuit board I can work out a way to use
the Vector pins I found.

Dennis Tillman W7PF
------------------------------------
Posted by: "Colin Herbert" <colingherbert@blueyonder.co.uk>
------------------------------------


Re: Tek Instruction Manual (aka "Bible")

David Berlind
 

Hey all, sorry to revive this thread, but quick follow up question
regarding similar models...

Are the 465 and 466 close enough in terms of parts that I might be able to
part a 465 (particularly the fan motor) to fix the 466? Or the other way
around?

The owner of the 465 says <https://nh.craigslist.org/ele/6062570749.html>
the following,

"and now it appears that the CRT isn't producing a trace. The illumination
function works on the display, but no trace."

Thanks!

DavidB


Re: A Vacuum Tube Curve Tracer for all Tek Semiconductor Curve Trace

Colin Herbert
 

Dennis,

Is this any good to you?

http://www.tubeampdoctor.com/en/shop_Tube_sockets_and_Accessories_9_PIN_tube
_socket/Novalplug_Noval_tube_base_adapter_2163

The price seems reasonable.

Colin.



From: TekScopes@yahoogroups.com [mailto:TekScopes@yahoogroups.com]
Sent: 28 March 2017 06:25
To: TekScopes@yahoogroups.com
Subject: RE: [TekScopes] Re: A Vacuum Tube Curve Tracer for all Tek
Semiconductor Curve Trace





Hi Dave,
Thank you for your offer but for the moment I think I have a better
solution. The pins coming out of a tube base are about 1/4" (6.8mm). If I
try to push a longer pin into a tube socket it bottoms out at about 0.28"
(7.25mm). So I'm concerned that the 12mm pin length you have will cause
problems.

I have found a workable solution. Vector still makes pins that are the right
diameter and approximately the right length. They are meant to be pressed
into place in a PC Board through hole and then soldered to the pad
surrounding the hole. Since the vacuum tube curve tracer I was making will
ultimately be built on a printed circuit board I can work out a way to use
the Vector pins I found.

Dennis Tillman W7PF


Re: tube sockets and plugs for the new tube curve tracer

David Holland
 

Yeah. I think they're likey "usable-old-stock". (Hence my not really a
source comment)

I dont think anyone is making anything new besides the 8 pin octal and 9
pin ones everyone has.


On Tue, Mar 28, 2017 at 12:12 AM 'Dennis Tillman' dennis@ridesoft.com
[TekScopes] <TekScopes@yahoogroups.com> wrote:

Hi David,
He has a 7-pin socket saver listed for $25. You are right about him not
being cheap.
Thanks for the link.
Dennis Tillman W7PF

-----Original Message-----
Sent: Monday, March 27, 2017 5:04 PM
Subject: Re: [TekScopes] tube sockets and plugs for the new tube curve
tracer

I wouldn't call it a proper "source", but the last 7-pin socket saver I
got was from Jim Cross @ http://vacuumtubesinc.com

I had to send him a note specifically for it, and he scrounged a
reasonable one up out of hits back room.

They've currently got a couple listed, but they aren't cheap.

His email is jim@vacuumtubesinc.com

(No affiliation, satisfied customer, yada-yada-yada)

David

------------------------------------
Posted by: David Holland <david.w.holland@gmail.com>
------------------------------------




------------------------------------
Posted by: "Dennis Tillman" <dennis@ridesoft.com>
------------------------------------


------------------------------------

Yahoo Groups Links




Re: Tek 464 - Advice on soldering shielding mesh to Vertical Output IC case

 

For jobs like this, I use my largest soldering iron tip for its high
heat capacity. Soldering then takes just a second or two; the large
surface area transfers a lot of heat rapidly and the large heat
capacity means the temperature drop is small so there is no need to
wait for reheating.

The rubber/emery abrasive wheel from a Dremel is perfect for cleaning
the surface before soldering if necessary without scratching the whole
top. I do not know if they are still available but the white erasers
used for ink (the ones that tear up the paper) work well also.

If soldering is still difficult, then a tiny bit of dilute HCl acid
will help a lot but I doubt this will be necessary. Kester actually
makes some acidic surface cleaners (Copper Nu 5520, Nickel Nu 5530)
which work great as fluxes but good luck finding them.

On 28 Mar 2017 06:42:34 +0000, you wrote:

Hi,

I don't think this should be of any problem. The die itself is attached to the bottom of the IC, not the to of the case where you'll solder it. If you are worried, put the IC on some cooling, such as a wet sponge.
To solder the case, first scrape or sand the top and using a lot of flux. Then melt some solder on the case and you can solder the braid. It may sound strange, but use high power (but temperature controlled) iron. This will let you solder it quickly without heating the whole IC.

Szabolcs


Re: Tek 464 - Advice on soldering shielding mesh to Vertical Output IC case

 

The driver hybrid on the 7000 series vertical output amplifiers have a
pressed connection to the top of the metal can package which goes to
ground. It is held in place with a plastic clip instead of being
soldered into place. I am inclined to think Tektronix added these
because they could not rely on the ground connection through the heat
sink interface.

As far as soldering, the top of the metal can package is relatively
far from the circuits mounted to the base of the package so soldering
is relatively easy and safe assuming that the solder wets the surface.


155-0241_01

Aung kyaw Moe <aakmoe@...>
 

Thank you all for advice on my 2456 u800.155-0241-01/-02/-00 are they all the same ?Or do I need faster chip for 2465/2465b?
Thanksmoe mm0mrmSent from Yahoo Mail on Android

[Non-text portions of this message have been removed]


Re: Tek 464 - Advice on soldering shielding mesh to Vertical Output IC case

Szabolcs Szigeti
 

Hi,

I don't think this should be of any problem. The die itself is attached to the bottom of the IC, not the to of the case where you'll solder it. If you are worried, put the IC on some cooling, such as a wet sponge.
To solder the case, first scrape or sand the top and using a lot of flux. Then melt some solder on the case and you can solder the braid. It may sound strange, but use high power (but temperature controlled) iron. This will let you solder it quickly without heating the whole IC.

Szabolcs


Re: A Vacuum Tube Curve Tracer for all Tek Semiconductor Curve Trace

 

Hi Dave,
Thank you for your offer but for the moment I think I have a better
solution. The pins coming out of a tube base are about 1/4" (6.8mm). If I
try to push a longer pin into a tube socket it bottoms out at about 0.28"
(7.25mm). So I'm concerned that the 12mm pin length you have will cause
problems.

I have found a workable solution. Vector still makes pins that are the right
diameter and approximately the right length. They are meant to be pressed
into place in a PC Board through hole and then soldered to the pad
surrounding the hole. Since the vacuum tube curve tracer I was making will
ultimately be built on a printed circuit board I can work out a way to use
the Vector pins I found.

Dennis Tillman W7PF

-----Original Message-----
Sent: Monday, March 27, 2017 3:14 PM
Subject: RE: [TekScopes] Re: A Vacuum Tube Curve Tracer for all Tek
Semiconductor Curve Trace

Dennis
I have several new 9 pin plug bases here which you are welcome to- these
are in essence a plastic base with the pins projecting from both sides of
the plastic and were originally used pcb mounted to make a test access
(multi) point in early Tait radios - the pins project equally each side of
the plastic base roughly 12 mm or so- I've not measured it. Can dig one out
and take a picture if you're interested.
DaveB,
Christchurch, NZ


-----Original Message-----
From: TekScopes@yahoogroups.com [mailto:TekScopes@yahoogroups.com]
Sent: Tuesday, March 28, 2017 4:16 AM
To: TekScopes@yahoogroups.com
Subject: RE: [TekScopes] Re: A Vacuum Tube Curve Tracer for all Tek
Semiconductor Curve Trace

Hi Dave,
I need one or two.
I did find a source for 9-pin socket savers. Those can be opened up and the
plug part separated from the socket. They are less than $3 so I will buy
those. Same for 8-pin octal socket savers. So far I haven't found any 7-pin
socket savers still being sold. One was sold on Ebay the other day but my
$28 bid was not enough to win it.
Dennis Tillman W7PF

-----Original Message-----
Sent: Sunday, March 26, 2017 10:59 PM
Subject: RE: [TekScopes] Re: A Vacuum Tube Curve Tracer for all Tek
Semiconductor Curve Trace

Dennis
How many of the 7 and 9 pin plugs do you need? Are you looking for a
significant number?
73
Dave, ZL3FJ

-----Original Message-----
Sent: Monday, March 27, 2017 3:46 PM
Subject: RE: [TekScopes] Re: A Vacuum Tube Curve Tracer for all Tek
Semiconductor Curve Trace

Hi Bill,
In my case I needed tube PLUGS that would plug into a tube SOCKET. That is
my problem.

I am well aware of Tubesandmore. They certainly have a nice selection of 4
pin, 5 pin, 7 pin, 8 pin , and 9 pin tube SOCKETS. Unfortunately other than
8 pin tube PLUGS they, or anyone else for that matter, do not sell 7 pin
miniature tube PLUGS or 9 pin miniature PLUGS. Since 7 pin miniature tubes
and 9 pin miniature tubes have their pins coming right out of the glass
envelope this will make it very hard to get what I need by smashing spent
tubes to try and get an intact set of pins around the base of the tube.

As John Gord pointed out one way to find some of these is by searching for
socket savers. They, too, are scarce these days. Not many people are
designing things with tubes. There was a 9 pin and a 7 pin socket saver
auction on Ebay and I bid $28 for them but someone outbid me. I have no way
to know how high that person's ultimate bid might have been.

Dennis Tillman, W7PF

-----Original Message-----
Sent: Sunday, March 26, 2017 5:08 PM
Subject: Re: [TekScopes] Re: A Vacuum Tube Curve Tracer for all Tek
Semiconductor Curve Trace

Dennis and all,
Has everyone been overlooking the best source for tubes and related
hardware?

https://www.tubesandmore.com/products/tube_accessories
Bill
KB3DKS

-----Original Message-----
From: 'Dennis Tillman' dennis@ridesoft.com [TekScopes]
<TekScopes@yahoogroups.com>
Sent: Wed, Mar 22, 2017 10:06 am

Hi John,
Thanks for the suggestion. I know I kept coming across octal socket savers
all the time but I never saw a 7 pin or 9 pin socket saver. I will give that
a try.
Dennis Tillman W7PF

-----Original Message-----
Sent: Tuesday, March 21, 2017 5:06 PM
Subject: RE: [TekScopes] Re: A Vacuum Tube Curve Tracer for all Tek
Semiconductor Curve Trace

Try a Google search for "7 pin socket saver". I got some hits. 9 pin
socket savers seem to be more common. It looks like at least some of the
socket savers could be disassembled.
--John Gord
------------------------------------
Posted by: Doxemf <doxemf@aol.com>
------------------------------------




------------------------------------
Posted by: "Dennis Tillman" <dennis@ridesoft.com>
------------------------------------


------------------------------------

Yahoo Groups Links





------------------------------------
Posted by: "Dave Brown" <tractorb@ihug.co.nz>
------------------------------------


------------------------------------

Yahoo Groups Links





------------------------------------
Posted by: "Dennis Tillman" <dennis@ridesoft.com>
------------------------------------


------------------------------------

Yahoo Groups Links





------------------------------------
Posted by: "Dave Brown" <tractorb@ihug.co.nz>
------------------------------------


------------------------------------

Yahoo Groups Links


Re: tube sockets and plugs for the new tube curve tracer

 

Hi David,
He has a 7-pin socket saver listed for $25. You are right about him not being cheap.
Thanks for the link.
Dennis Tillman W7PF

-----Original Message-----
Sent: Monday, March 27, 2017 5:04 PM
Subject: Re: [TekScopes] tube sockets and plugs for the new tube curve tracer

I wouldn't call it a proper "source", but the last 7-pin socket saver I got was from Jim Cross @ http://vacuumtubesinc.com

I had to send him a note specifically for it, and he scrounged a reasonable one up out of hits back room.

They've currently got a couple listed, but they aren't cheap.

His email is jim@vacuumtubesinc.com

(No affiliation, satisfied customer, yada-yada-yada)

David

------------------------------------
Posted by: David Holland <david.w.holland@gmail.com>
------------------------------------


Re: Tek 464 - Advice on soldering shielding mesh to Vertical Output IC case

Vladimir _
 

Hi Fabio,

I have two 466s, an early and a late model, and both have the grounding strap soldered to the output amp if I remember correctly. However, I doubt it really matters as the hybrid has a low-impedance path to ground through the bolt on the bottom anyway. I personally wouldn't risk damaging the replacement unless absolutely necessary.


Re: Tek 464 - Advice on soldering shielding mesh to Vertical Output IC case

 

I have an early 464 manual that shows a braid on the VOA, just across the device. I have two 466 manuals, one earlier and one later that also show the 464's(!) VOA. Neither shows a strap/braid.

Raymond


Re: OT: FET matching

 

Maybe use one of those modern CPU heatsinks, like this?

http://www.legitreviews.com/images/reviews/1303/rolimatech-Armageddon-Front2.jpg

This one's respectable: http://noctua.at/en/nh-d15.html

those can take a lot of heat...

Where can I read more about your battery rejuvenation system? It
sounds very interesting. I'd love to use something like this for some
older batteries I have.

On Mon, Mar 27, 2017 at 9:14 PM, edbreya@yahoo.com [TekScopes]
<TekScopes@yahoogroups.com> wrote:
Yet another thing - if the lead inductance can't be reduced, and it represents a relatively large power loss to dispose of, maybe consider making the snubber into a recycler, such that most of the energy in each cycle is returned to the source rather than dissipated. This would of course require extra components like a small transformer and rectifiers. If you can arrange it so the kickback (but none the forward) current goes through the transformer, you can step it up to the main cap voltage and dump some charge back into it, increasing overall efficiency and reducing the heat load in the guts.

I'm picturing a ferrite or powder core toroidal transformer, maybe a couple of inches diameter being about right for the power level.

Ed

[Non-text portions of this message have been removed]



------------------------------------
Posted by: edbreya@yahoo.com
------------------------------------


------------------------------------

Yahoo Groups Links



Re: tube sockets and plugs for the new tube curve tracer

David Holland
 

I wouldn't call it a proper "source", but the last 7-pin socket saver
I got was from Jim Cross @ http://vacuumtubesinc.com

I had to send him a note specifically for it, and he scrounged a
reasonable one up out of hits back room.

They've currently got a couple listed, but they aren't cheap.

His email is jim@vacuumtubesinc.com

(No affiliation, satisfied customer, yada-yada-yada)

David


Re: tube sockets and plugs for the new tube curve tracer

 

Sure, I'm just wondering if that's the right dimensions. I was
thinking, maybe you should just take a female 7 pin DIN plug, and put
some wire in instead of the female contacts, and bend them out to fit
a 7 pin tube socket? That's like a 10 min job. You could use the round
plastic part from multiple din sockets for added stability. That's not
a huge job.

On Tue, Mar 28, 2017 at 1:39 AM, 'Dennis Tillman' dennis@ridesoft.com
[TekScopes] <TekScopes@yahoogroups.com> wrote:
Hi Cheater,
This is a socket (and an expensive one at that). This is the female part of what I am looking for. I'm looking for the plug that goes into this socket (the male part).

Dennis Tillman W7PF

-----Original Message-----
From: TekScopes@yahoogroups.com [mailto:TekScopes@yahoogroups.com]
Sent: Monday, March 27, 2017 3:57 PM
To: TekScopes <TekScopes@yahoogroups.com>
Subject: Re: [TekScopes] tube sockets and plugs for the new tube curve tracer

Hi Dennis,
is this the kind?
http://www.thetubestore.com/Parts-Accessories/7-Pin-Sockets/7-Pin-Teflon-Gold-Pin-Tube-Socket


On Mon, Mar 27, 2017 at 8:53 PM, 'Dennis Tillman' dennis@ridesoft.com [TekScopes] <TekScopes@yahoogroups.com> wrote:
Hi Walter,
I looked through the Eby web site and found no plugs of any kind. They
do have lots of sockets for tubes as well as for some transistors.

Dennis Tillman W7PF

-----Original Message-----
Sent: Monday, March 27, 2017 11:37 AM
Subject: [TekScopes] tube sockets and plugs for the new tube curve
tracer

Eby still makes all kinds of tube sockets AND plugs, and they do make
custom ones, have a look here:

http://www.ebycompany.com/sockets.shtml
http://www.ebycompany.com/sockets.shtml

also, for interfacing to tube testers, an octal plug works, which you
can scavenge from many unwanted octal tubes easily. hickock and
others used this technique themselves to tie to things like compactron adaptors, etc. .
it does require slightly altered pin settings to get to multi-element
tubes, but that is not a big deal, and is exactly what they did.

you can also easily MAKE a nice 7/9 tube plug simply by using stock
loose male connector pins from d-sub connectors, or ms-connector pins,
and a simple little round board to support them. it can also sport a
little tab or center hole/stand-off to hold down a cable strain relief.

finally, an even better plan, may be to simply make a pendant cable
tied to the inside tube tester wiring, brought out to a 9 pin d-sub
connector for easy interfacing.

all the best,
walter
------------------------------------
Posted by: walter2@sphere.bc.ca
------------------------------------




------------------------------------
Posted by: "Dennis Tillman" <dennis@ridesoft.com>
------------------------------------


------------------------------------

Yahoo Groups Links



------------------------------------
Posted by: cheater00 cheater00 <cheater00@gmail.com>
------------------------------------


------------------------------------

Yahoo Groups Links





------------------------------------
Posted by: "Dennis Tillman" <dennis@ridesoft.com>
------------------------------------


------------------------------------

Yahoo Groups Links



Re: tube sockets and plugs for the new tube curve tracer

 

Hi Cheater,
This is a socket (and an expensive one at that). This is the female part of what I am looking for. I'm looking for the plug that goes into this socket (the male part).

Dennis Tillman W7PF

-----Original Message-----
From: TekScopes@yahoogroups.com [mailto:TekScopes@yahoogroups.com]
Sent: Monday, March 27, 2017 3:57 PM
To: TekScopes <TekScopes@yahoogroups.com>
Subject: Re: [TekScopes] tube sockets and plugs for the new tube curve tracer

Hi Dennis,
is this the kind?
http://www.thetubestore.com/Parts-Accessories/7-Pin-Sockets/7-Pin-Teflon-Gold-Pin-Tube-Socket


On Mon, Mar 27, 2017 at 8:53 PM, 'Dennis Tillman' dennis@ridesoft.com [TekScopes] <TekScopes@yahoogroups.com> wrote:
Hi Walter,
I looked through the Eby web site and found no plugs of any kind. They
do have lots of sockets for tubes as well as for some transistors.

Dennis Tillman W7PF

-----Original Message-----
Sent: Monday, March 27, 2017 11:37 AM
Subject: [TekScopes] tube sockets and plugs for the new tube curve
tracer

Eby still makes all kinds of tube sockets AND plugs, and they do make
custom ones, have a look here:

http://www.ebycompany.com/sockets.shtml
http://www.ebycompany.com/sockets.shtml

also, for interfacing to tube testers, an octal plug works, which you
can scavenge from many unwanted octal tubes easily. hickock and
others used this technique themselves to tie to things like compactron adaptors, etc. .
it does require slightly altered pin settings to get to multi-element
tubes, but that is not a big deal, and is exactly what they did.

you can also easily MAKE a nice 7/9 tube plug simply by using stock
loose male connector pins from d-sub connectors, or ms-connector pins,
and a simple little round board to support them. it can also sport a
little tab or center hole/stand-off to hold down a cable strain relief.

finally, an even better plan, may be to simply make a pendant cable
tied to the inside tube tester wiring, brought out to a 9 pin d-sub
connector for easy interfacing.

all the best,
walter
------------------------------------
Posted by: walter2@sphere.bc.ca
------------------------------------




------------------------------------
Posted by: "Dennis Tillman" <dennis@ridesoft.com>
------------------------------------


------------------------------------

Yahoo Groups Links



------------------------------------
Posted by: cheater00 cheater00 <cheater00@gmail.com>
------------------------------------


------------------------------------

Yahoo Groups Links


Re: Tek 464 - Advice on soldering shielding mesh to Vertical Output IC case

 

Hi Fabio,
A braid as on the picture is exactly what I thought you meant but I used the wrong word.
Just checked 3(!) 465's, no braid! Maybe someone on this forum knows more. The braid may have been there to decrease HF noise but it certainly won't harm running your 'scope without it, see the result and temporarily press the braid against the VOA's case for comparison.

Raymond

43501 - 43520 of 179204