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On Thu, Mar 24, 2016 at 09:21:01PM -0700, 'Dennis Tillman'
dennis@... [TekScopes] wrote:

As their prize I had in mind that each of us donate one broken plugin or
scope to them.

That way they would have no choice but to be lifetime members. It should
take them that long to fix them all.



Don't ask me how I know this.



Dennis Tillman W7PF

No need to ask :-)

--
Paul Amaranth, GCIH | Rochester MI, USA
Aurora Group, Inc. | Security, Systems & Software
paul@... | Unix & Windows



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Posted by: Paul Amaranth <Paul@...>
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Yahoo Groups Links

any one crazy enough to put it as one big zip and post on a torrent ?

Hi David,
I am not very sure ?Cap A18C2213, A18C2214, A18C2217 description says "CAP,FXD,MTLZD:1500pF,10%,250V" ?which never mention AC but all those located in AC circuit.
I ordered DC cap "ECQ-E6152JF" which 630VDC cap. ?Don't feel right here, am I using wrong CAP and should be using AC Cap?

From: "David davidwhess@... [TekScopes]" <TekScopes@...>
To: TekScopes@...
Sent: Sunday, 20 March 2016, 13:56
Subject: Re: [TekScopes] Tek 2247A [SN B029000] Recap and diode part list ?

? Film capacitors are sometimes selected for specific characteristics to
support their application but in the general case, they are all
interchangeable and can also be replaced with C0G or NP0 type ceramic
capacitors.

The difference between number 1 and number 5 at your first link is
physical construction.

On Sun, 20 Mar 2016 04:51:08 +0000 (UTC), you wrote:

Hi David,

One of my equipment having ?plastic type CAP with transparent case [look like label ?number 1 at this link]?
I am try to replace it with??metalized polyester film capacitor from Panasonic with same value and same volt rating, they look like [], they look very different from original cap. ?This new one look more like ?label number ?4 & 5 [?].

Is there any compatible issues? or ?number [1] actually older technology no longer in used? I can find any similar cap from ?element 14

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

All the digitized semiconductor data books we collected over the years at Sphere, along with tubes, app notes, time codes, and tek/hp cross-refs and concepts are now up in the first location, thanks to John Allen (K1AE). he has parked them here on his google drive, nicely laid out by the book categories:



Click on the image, then use the top located download arrow to grab the file. Paul Swed is also transferring the collection to Didier's site for easy retrieval, but this will take a while to transfer and index. Many thanks to all the good net citizens who scanned and preserved these, and have kept them alive. Hopefully these common repositories will make it easy to find and retrieve them for years to come. For those coming up for stuff day, I have them on DVD, you can save your bandwidth.

If anybody has the old classic semiconductor reference guides motorola put out, that list every single !N, 2N and 3N registered number, please let me know! That's the one thing I haven't located, other than my paper copies.

Hope these prove useful, they really cover a lot of ground.
all the best,
walter (walter2 -at- sphere.bc.ca)
sphere research corp.

-----Original Message-----
From: TekScopes@... [mailto:TekScopes@...]
Sent: 25 March 2016 14:54
To: TekScopes@...
Subject: [TekScopes] Huge Databook collection now uploaded

All the digitized semiconductor data books we collected over the years at Sphere, along with

app notes, time codes, and tek/hp cross-refs and concepts are now up in the first location, thanks

John Allen (K1AE). he has parked them here on his google drive, nicely laid out by the book
categories:




Click on the image, then use the top located download arrow to grab the file. Paul Swed is also
transferring the collection to Didier's site for easy retrieval, but this will take a while to

index. Many thanks to all the good net citizens who scanned and preserved these, and have kept
them alive. Hopefully these common repositories will make it easy to find and retrieve them for

to come. For those coming up for stuff day, I have them on DVD, you can save your bandwidth.

If anybody has the old classic semiconductor reference guides motorola put out, that list every

!N, 2N and 3N registered number, please let me know! That's the one thing I haven't located, other
than my paper copies.

Hope these prove useful, they really cover a lot of ground.
all the best,
walter (walter2 -at- sphere.bc.ca)
sphere research corp.









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Posted by: walter2@...
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Yahoo Groups Links

Hi David,
I never tried this experiment in a regular 4 slot MF. My conclusion was that
I needed the dual independent beams but I don't remember the reason. There
may be a way to do it provided you don't try to make it too complicated and
if I had the ALT and CHOP settings correct. But there would be a lot of beam
switching going on and I don't know how that would affect the curves on the
screen. They may get chopped up pretty badly

The 7844 didn't care whether the 7CT1N was in the Horizontal or the vertical
slot. No beam switching was necessary so each set of curves was perfect. I
did repeat the test on the 7844 with both 7CT1Ns in the vertical slots and
then with both in the horizontal slots and finally with one 7CT1N in one
horizontal slot and the other 7CT1N in one vertical slot. So maybe what I
was trying to prove was the incredible versatility of the 7844. It is
definitely an amazing scope!

Dennis Tillman W7PF